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Sim vs Gumloop

Gumloop is a hosted, proprietary no-code platform for building AI agents and automations, sold as a $37/month Pro plan or a custom Enterprise plan, with deployment into the customer's own cloud (VPC) as an optional Enterprise add-on. Sim is an open-source AI workspace with an Apache 2.0-licensed core for building, deploying, and managing agents visually, conversationally, or with code, available as a managed cloud or self-hosted with Docker Compose or Kubernetes. Choose Gumloop when you want a fully managed product aimed at non-technical business users, or a vendor-supported deployment inside your own cloud. Choose Sim when you need to run and inspect the platform yourself or want to start on a free plan.

Sim is the open-source AI workspace where teams build, deploy, and manage AI agents visually, conversationally, or with code. Here is how Sim compares to Gumloop on platform architecture, AI capabilities, integrations, pricing, security, and support. Every fact below is sourced and dated, last verified .

Sim is an open-source AI workspace for building, deploying, and managing AI agents. This page compares Sim to Gumloop across platform architecture, AI capabilities, integrations, pricing, security and compliance, observability, and support, using sourced, dated facts for buyers evaluating both platforms.

What is Sim?

Sim is the open-source AI workspace where teams build, deploy, and manage AI agents, connecting 270+ integrations and every major LLM to automate real work visually, conversationally, or with code.

What is Gumloop?

Gumloop is a hosted, no-code visual platform for building and deploying AI agents and automations: a drag-and-drop canvas, an AI copilot ("Gen") for natural-language flow creation, and native MCP (Model Context Protocol) integration support.

Sim vs Gumloop: feature-by-feature comparison

The sections below compare Sim and Gumloop across platform and deployment, pricing, security and compliance, AI capabilities, integrations, observability, and support.

Platform & deployment

CompareSim vs Gumloop
Sim
Gumloop
Builder type
Sim
Visual canvas, chat, or code (source: Sim Docs: Introduction (visual, natural-language, and API/SDK building), opens in a new tab)Visual drag-and-drop canvas, natural-language (Chat), or code (API/SDK)
Gumloop
Visual canvas plus Gummie AI copilot for building flows (source: Gumloop homepage, opens in a new tab)Visual, no-code canvas builder with an AI copilot ('Gummie') that can generate/modify flows from natural-language prompts. Gumloop is a visual/no-code drag-and-drop canvas for chaining nodes (AI, integration, logic) into agent 'flows'; a chat-based AI agent named Gummie can build and edit these flows from plain-English instructions.
Learning curve
Sim
Low, plus natural-language Chat for non-technical users (source: Sim Docs: Introduction (visual, natural-language, and API/SDK building), opens in a new tab)Low for visual building; natural-language Chat surface (with a workflow-scoped Copilot) for non-technical builders. Chat lets users describe a workflow in plain language and have Sim scaffold or edit it; the visual canvas requires no code to connect blocks.
Gumloop
Easy for basics, steeper for code and multi-agent (source: Gumloop homepage, opens in a new tab)Low for basic no-code flows aimed at non-technical business users; steeper for advanced use of custom Python code nodes and multi-agent orchestration
Self-hosting
Sim
(source: Sim Docs: Self-Hosting with Docker, opens in a new tab)Yes: Docker Compose or Kubernetes (Helm)
Gumloop
(source: Gumloop Security & Trust, opens in a new tab)No public self-host option for the Gumloop app; Enterprise customers can optionally deploy it into their own cloud (VPC) in a region of their choice. There is no downloadable, self-managed install. VPC deployment is an optional Enterprise add-on, and VPC organizations are not charged credits for compute because it runs on their infrastructure.
Deployment options
Sim
Cloud-hosted or self-hosted, no mid-tier VPC option (source: Sim Docs: Self-Hosting, opens in a new tab)Cloud-hosted (managed, multi-tenant SaaS) or self-hosted (Docker/Kubernetes). No documented managed single-tenant/VPC hosting tier in between. The Enterprise plan's only hosting-related row in the pricing comparison table is a boolean "Self Hosting" flag; there is no dedicated-instance/VPC offering.
Gumloop
Managed SaaS or enterprise VPC (source: Gumloop Security & Trust, opens in a new tab)Managed SaaS (cloud) and enterprise VPC deployment into customer's own cloud region
Templates
Sim
(source: Sim codebase: templates gallery and APIs removed, opens in a new tab)No: the pre-built workflow template gallery (landing and in-workspace) was removed platform-wide. Sim now surfaces per-integration starter prompts instead of a template library.
Gumloop
(source: Gumloop Community Templates, opens in a new tab)Yes: a public template gallery ('flows') plus an organization-templates feature for Team/Enterprise plans to share internal templates. Gumloop lists a community/creator template marketplace at gumloop.com/templates covering sales, marketing, HR, finance, data extraction, etc.
License
Sim
Apache 2.0 core; enterprise features separately licensed (source: Sim Docs: Introduction (FAQ - Open Source License), opens in a new tab)Apache License 2.0 for the core; enterprise features are under the separate Sim Enterprise License, which requires an Enterprise subscription for production use
Gumloop
Proprietary (source: Gumloop GitHub organization, opens in a new tab)Proprietary. The Gumloop application is closed, hosted commercial software. Gumloop's public GitHub repositories are client SDKs (gumloop-py, gumloop-js, Apache-2.0), forks, and an archived GPL-3.0 MCP-server project, not the platform itself.
Environment promotion
Sim
(source: Sim Docs: Workspace Forks, opens in a new tab)Yes: fork a whole workspace into a dev/qa/prod-style child, diff it, and promote or roll back changes in either direction. Credential and env-var remapping is required before every promote, so secrets are never silently copied across environments. Gated to Enterprise plan on hosted Sim, or a FORKING_ENABLED flag on self-hosted deployments.
Gumloop
(source: Gumloop Docs: Organizations and Workspaces, opens in a new tab)No dedicated dev/staging/production promotion pipeline. Work is organized as Organization > Personal Space (private) plus Teams (shared, Pro plan and up), with a 'Move to Team' action to share a flow, not cross-workspace cloning.. Gumloop organizes work as Organization > Personal Space (private) or Team (a shared collaborative space, Pro plan and above), with no structured pipeline for promoting changes between dev, staging, and production. Moving a flow out of a personal space happens via a manual 'Move to Team' action. Version history is handled separately through single-workflow checkpoints (see versionControlDepth).
Version control
Sim
Deployment rollback plus Copilot edit diff/revert (source: Sim codebase: WorkflowDiffEngine, opens in a new tab)Deployed-version history with rollback for every workflow; server-persisted checkpoint/revert and visual diff (accept/reject) specifically for Copilot AI edits. Manual drag-and-drop undo/redo is client-side/localStorage only (capped at 100 ops, 5 stacks), not server-synced across devices. Deployment history does not include an arbitrary version-to-version diff tool, and knowledge base documents have no version history.
Gumloop
Checkpoint snapshots; no diff or branching (source: Gumloop Docs: Workflow Checkpoints, opens in a new tab)Linear checkpoint snapshots with rollback; no diff view, no true undo/redo, no branching. Gumloop replaced a per-version system with a "checkpoints" model. Users manually create checkpoints (snapshots) before major changes, then can either "Make This Checkpoint Live" (switch triggers/interfaces to that checkpoint) or "Rollback to This Checkpoint" (duplicate a past snapshot into the current draft). Docs describe checkpoint metadata (number, date, author) but no diff/compare view between checkpoints, no session-level undo/redo, and a linear history with no branching. Gumloop compares it to Google Docs version history, not git-style branching.
Realtime collaboration
Sim
(source: Sim codebase: realtime presence handler (cursor/selection broadcast), opens in a new tab)Yes: live multiplayer editing of the same workflow canvas, with real-time cursors, selection broadcasting, and synced concurrent edits over a dedicated realtime backend
Gumloop
(source: Organization and Teams - Gumloop docs, opens in a new tab)No: Gumloop calls itself a "multiplayer AI agent builder" and lets Teams share ownership so multiple editors can work on the same flow or agent, but no public documentation confirms live, concurrent multi-user editing with synced cursors, selections, or operations on the same open canvas at the same moment.. "Multiplayer" refers to shared workspace/team access, not a documented live-cursor/synced-operation editing experience.
Native file storage
Sim
(source: Sim codebase: file share modal (password/email/SSO modes), opens in a new tab)Yes: a native Files area with folder hierarchy, link-based sharing (public, password, email OTP, or SSO auth), and a workspace-level Recently Deleted view covering workflows, tables, knowledge bases, files, and folders. Admins can restrict which share-auth modes (public/password/email/SSO) a permission group is allowed to use.
Gumloop
(source: Make shareable files with agents - Gumloop blog, opens in a new tab)Yes: Gumloop has a native files area (personal/team Files) where generated artifacts get a dedicated URL. Share access can be set to restricted, organization-wide, or public-link, and enterprise admins can block external sharing. Folder creation is also supported for connected Drive storage.. Public documentation does not confirm password/SSO-gated share links or a deleted-item recovery (trash/undelete) feature for this native file store.
Native data tables
Sim
(source: Sim Docs: Tables, opens in a new tab)Yes: a native spreadsheet-like Tables feature (typed columns, not an external DB connector) with full keyboard support (arrow keys, Tab, copy-paste bulk load, Cmd/Ctrl+Z undo) and atomic per-row writes from multiple workflows at once. No public fixed row-limit figure is documented (guidance says paginate reads past ~100k rows); a workflow can also be wired to run per row via a "workflow column."
Gumloop
(source: Types - Gumloop docs, opens in a new tab)No: Gumloop has no native, first-class spreadsheet-like data-grid primitive with its own typed columns, row/column limits, and keyboard navigation (arrow keys, Tab, copy-paste, undo) wired directly into agent runs. Tabular work instead runs through external connector nodes (Google Sheets, Airtable, Postgres, Supabase) and a "List of Lists" data type for passing table-shaped data between nodes, not an in-app database/table object a workflow can read from and write to as storage.. Gumloop added "table support ... for better data visualization," per its changelog, which is a display/rendering feature for showing tabular data in the UI, not a persistent, spreadsheet-navigable data table entity a workflow can use as its own storage layer. This is a real capability gap versus a native, spreadsheet-like data-grid feature built into the product.
Rich-text document editor
Sim
(source: Sim codebase: rich markdown editor, opens in a new tab)Yes: markdown files opened in the Files viewer render in an inline WYSIWYG-style rich markdown editor, with inline @-mention links to other Sim resources
Gumloop
Unknown: no evidence found either wayUnknown: no public documentation describes an inline rich-text/WYSIWYG markdown editor for documents stored in Gumloop; searches surfaced only generic markdown-editor products unrelated to Gumloop.. Gumloop's platform is workflow/agent-centric with file and artifact nodes; docs, changelog, and blog surface no dedicated document WYSIWYG editor.
Sub-workflows (composition)
Sim
(source: Sim Docs: Workflow block, opens in a new tab)Yes: a Workflow block calls another saved workflow as a step, waits for it to finish, runs its latest deployed version, and maps parent variables into the child's input form. Self-references are blocked to prevent infinite recursion.
Gumloop
(source: Subflows - Gumloop docs, opens in a new tab)Yes: a dedicated 'Subflow' feature lets any saved workflow be dropped in as a reusable node inside another workflow, with Input/Output nodes to pass parameters in and return values out. Gumloop docs describe Subflows as workflows that 'show up in your node library just like native nodes' once built, so they can be dragged onto the canvas of any other flow, wired to Input nodes for parameters and Output nodes for return values. When a list is connected to a Subflow node it runs once per list item (Loop Mode) rather than a single time. Public docs do not explicitly state whether the parent execution blocks until the subflow completes, but since a Subflow is embedded as a node in the parent's directed graph, not invoked over a separate async webhook call, later nodes depending on its outputs wait for it to resolve.
Custom blocks (org-wide reuse)
Sim
(source: Sim codebase: custom-blocks publish API (admin gate), opens in a new tab)Yes: a user with admin access on a workflow's workspace can publish its deployed version as a named, iconed custom block that appears in the block toolbar for the whole organization. Inputs are read live from the source workflow's Start block; the publisher picks which outputs to expose. The block always runs the source workflow's latest deployed version, and its internal steps and intermediate values are never exposed to consumers. Enterprise-gated on Sim Cloud; self-hosted deployments can opt in via a feature flag. Distinct from the Workflow (sub-workflow) block, which composes a workflow the same author controls, and from custom code/tool blocks, which run inline code rather than a full deployed workflow.
Gumloop
(source: Subflows - Gumloop docs, opens in a new tab)No: Gumloop has no feature that publishes an existing deployed workflow as an encapsulated, named block for the whole org to reuse. Subflows let a saved workflow be dropped into other flows as a node, but public docs describe this only as personal/same-project reuse, with no mention of hiding the subflow's internal steps or credentials, or of org-wide toolbar placement for other users. The one org-wide, block-like publishing surface Gumloop does have, the Custom Node Builder plus its "Node and Flow Library" Hub, is scoped to single AI-generated code nodes (wrapping an API or script), not a way to turn a multi-step visual workflow into a reusable block.. Gumloop's docs on Subflows describe only how to nest a saved workflow as a node with Input/Output nodes for parameters, with no documented mechanism for sharing that subflow node to other users, hiding its internal graph from them, or auto-propagating updates when the source workflow changes. Separately, docs.gumloop.com/core-concepts/node_and_flow_library confirms users can share a Custom Node organization-wide ('Share with Organization: Makes the node discoverable by all organization members'), appearing immediately in teammates' node libraries, but the page's substantive sections (Custom Nodes Tab, Sharing Custom Nodes, Publishing Custom Nodes) only ever cover single code-based nodes generated by the Custom Node Builder from a natural-language description, not multi-step canvas workflows. No Gumloop page describes converting an existing built flow into a shareable, encapsulated block the way a Custom Node is shared.

Pricing

CompareSim vs Gumloop
Sim
Gumloop
Pricing model
Sim
Credit-based billing; BYOK skips model usage charges (source: Sim Pricing, opens in a new tab)Credit-based usage billing (Stripe); bring-your-own-key calls skip Sim's model and tool usage charge, while the base per-run charge still applies
Gumloop
Credits at $0.005 each plus an 8% orchestration fee (source: Gumloop Pricing, opens in a new tab)Usage-based credits indexed at $0.005 each: Pro includes 20,000 credits per month and Enterprise is custom. Each agent run bills the list cost of model tokens, compute (5 credits per session-minute on the managed cloud; Enterprise VPC deployments are not charged for compute), and tool calls, plus an 8% orchestration fee. Pro credits reset monthly and do not roll over (Enterprise credits do). Pro overage is capped at 1,000,000 credits per billing period by default. Enterprise plans can negotiate a different orchestration fee.
Entry paid plan
Sim
Pro plan at $25/user/month (source: Sim Pricing, opens in a new tab)Pro: $25 per user/month
Gumloop
$37/month Pro, 20,000 credits/month (source: Gumloop Pricing, opens in a new tab)Pro plan at $37/month with 20,000 credits/month (7,400 at list price plus 12,600 bonus credits), unlimited seats and teams, 5 concurrent workflow runs, 25 concurrent agent chats, and 1 hosted MCP server
Free tier
Sim
(source: Sim Pricing, opens in a new tab)Yes: Free plan with 1,000 one-time credits (worth $5 on Sim Cloud), granted once at signup and never refreshed — no monthly reset and no weekly refresh (weekly refresh is a paid-plan feature)
Gumloop
(source: Gumloop Docs: Credits (plans and trial), opens in a new tab)No free plan: every new account gets a one-time 14-day free trial of Pro that requires a card and rolls into a paid $37/month Pro subscription unless cancelled. The plans table lists only Pro ($37/month) and Enterprise (custom).
Bring your own key
Sim
(source: Sim Docs: Bring Your Own Key (BYOK), opens in a new tab)Yes: bring-your-own-key provider calls skip Sim's model and tool usage charge (the base per-run charge still applies); workspace keys work on any plan, organization keys need a team or Enterprise plan, and multiple keys stored for the same provider are round-robin rotated, skipping any key that fails to decrypt
Gumloop
(source: Gumloop Pricing (BYOK FAQ), opens in a new tab)Yes, on Pro and Enterprise: with your own model-provider key, token credits drop to zero but the orchestration fee rises from 8% to 16% of what the run would have cost at list price

Security & compliance

CompareSim vs Gumloop
Sim
Gumloop
SOC 2
Sim
(source: Sim Landing Page, opens in a new tab)Yes: SOC2 compliant
Gumloop
SOC 2 Type II, HIPAA, GDPR-aligned (source: Gumloop Security & Trust, opens in a new tab)SOC 2 Type II attested; also HIPAA-compliant with BAAs available on eligible plans, and GDPR-aligned with EU-U.S. Data Privacy Framework (incl. UK Extension) certification
Data residency
Sim
Full control via self-hosting; Cloud region toggle is global, not per-customer (source: Sim Docs: Self-Hosting with Docker, opens in a new tab)Full data control via self-hosting (Docker/Kubernetes); data never leaves customer infrastructure when self-hosted. On Sim Cloud, async job execution has an internal US/EU region toggle, but it is deployment-wide, not a customer-selectable per-workspace residency option
Gumloop
VPC deployment plus zero data retention (source: Gumloop Security & Trust, opens in a new tab)Enterprise VPC deployment into a customer-controlled cloud region provides data residency/control; zero data retention (ZDR) agreements are in place with major LLM providers
Role-based access control
Sim
(source: Sim Docs: Roles and Permissions, opens in a new tab)Yes: admin/write/read workspace permissions, org-level admin/member roles, plus Enterprise-tier permission groups that allow/deny-list specific models, tools, and integrations per group on top of those base roles. See modelAndToolGovernance and credentialGovernance for the finer-grained permission-groups layer.
Gumloop
(source: Gumloop Security & Trust, opens in a new tab)Yes: role- and attribute-based access control (RBAC/ABAC) for agents/tools with per-tool authorization policies, plus SSO/SCIM on enterprise plans
Audit logging
Sim
(source: Sim codebase: auditLog table, opens in a new tab)Yes: dedicated audit_log table plus workflow execution logs, exposed via a public /v1/audit-logs API (Enterprise plan), plus continuous SIEM/warehouse export to Datadog, S3, GCS, Azure Blob, BigQuery, or Snowflake via a data-drains dispatcher
Gumloop
(source: Gumloop docs: Audit Logging, opens in a new tab)Yes: audit logs available, documented as an enterprise feature
Additional compliance
Sim
SOC2 (source: Sim Enterprise Page, opens in a new tab)SOC2. Self-hosting is the primary lever Sim offers for data-residency-sensitive compliance needs beyond SOC2, rather than additional certifications.
Gumloop
SOC 2, HIPAA, GDPR; no ISO/PCI/FedRAMP (source: Gumloop: Security and trust, opens in a new tab)SOC 2 Type II, HIPAA (with BAAs), GDPR-aligned program plus EU-U.S. Data Privacy Framework (incl. UK Extension); no ISO 27001, PCI, or FedRAMP. Gumloop is SOC 2 Type II attested, is HIPAA compliant with Business Associate Agreements (BAAs) available on eligible plans, maintains a GDPR-aligned privacy program, and is certified under the EU-U.S. Data Privacy Framework including the UK Extension. It also has zero-data-retention (ZDR) agreements with major LLM providers, BYOK support, encryption in transit and at rest, and DPAs for Enterprise customers, but no ISO 27001, PCI DSS, or FedRAMP.
Model & tool governance
Sim
(source: Sim codebase: PermissionGroupConfig (allowedModelProviders, deniedModels, deniedTools), opens in a new tab)Yes: enterprise "permission groups" let an admin allow-list/deny-list specific LLM providers and models, and separately deny specific tools/integrations (or disable all MCP or custom tools) per group, layered on top of workspace admin/write/read roles. This does not control whether an LLM provider retains prompts. Sim offers no "zero data retention" mode or governed AI gateway. A separate, Enterprise-gated feature lets orgs set a log-retention window and redact PII, but that only controls how long Sim itself keeps execution logs.
Gumloop
(source: Gumloop Docs: AI Model Control, opens in a new tab)Yes for models: an org-wide AI Model Control setting lets admins restrict members to an allow-list or block-list of models, set automatic fallback models (including a separate fallback for image generation), and override the default Recommended/Smartest/Fastest presets so all agents use consistent model choices. Tool governance is handled separately via the per-tool authorization policies covered under RBAC/ABAC, not a distinct model-and-tool control surface.. Gumloop's docs describe AI Model Control as an Enterprise admin feature applying platform-wide to every member ('Allow Only Selected' or 'Block Selected' modes), not scoped per-team or per-agent. It covers only which LLMs are usable and their fallback/preset routing; it makes no mention of restricting access to non-model tools, which is instead covered by the RBAC/ABAC per-tool authorization policies documented separately.
Credential governance
Sim
(source: Sim Docs: Roles and Permissions, opens in a new tab)Yes: shared credentials (connected accounts, service accounts, workspace secrets) are their own nested permission level (Member/Admin) below organization and workspace roles, and enterprise permission groups can further allow-list specific integrations and restrict which file-share auth modes (public/password/email/SSO) a group may use. A user's personal environment variables/secrets are never shared or inherited by anyone, including org owners/admins.
Gumloop
(source: Custom User Roles - Gumloop docs, opens in a new tab)No: Gumloop's Custom User Roles restrict access at the level of apps, tools, OAuth scopes, workflow nodes, and features (e.g. team creation, public sharing), plus usage caps, but not which specific stored credential or connection a role may use. The one related feature, "Agent-Owned Credentials," pins a single connection for everyone using an agent, which operates at the agent level, not the role or permission-group level.. Multi-role composition uses a union (least-restrictive) model for app access, the opposite of fine-grained per-credential allow/deny.
Single sign-on (SSO)
Sim
(source: Sim Docs: Single Sign-On (SSO), opens in a new tab)Yes: SAML 2.0 and OIDC single sign-on, with users routed to SSO by their email domain, plus SCIM 2.0 directory provisioning for Okta, Microsoft Entra ID, OneLogin, and JumpCloud that creates, updates, deactivates, and removes members and maps pushed groups to permission groups, workspace access, and the organization admin role
Gumloop
(source: SSO, SAML & SCIM - Gumloop docs, opens in a new tab)Yes: Gumloop supports enterprise SSO via SAML 2.0 (Okta, Entra ID, Google Workspace, JumpCloud, Ping Identity, Active Directory) plus Google/Microsoft OAuth. An SCIM add-on for Okta and Microsoft Entra ID auto-provisions and deprovisions users, syncs custom roles and teams from IdP groups, and runs on a 15-minute sync cycle.. Requires Admin role and an Enterprise subscription; enforces SP-initiated login only.
Custom session policy
Sim
(source: Sim Docs: Session Policies, opens in a new tab)Yes: Enterprise organization owners and admins can set a max session lifetime (1 to 8,760 hours from sign-in, regardless of activity) and an idle timeout (48 to 8,760 hours without activity), applied to every member on every device. Both limits are optional; leaving them empty keeps the default of 30-day sessions that extend automatically while a member stays active. A separate "Sign out all members" action immediately revokes every member session in the organization except the admin's own, for use after a security incident or an offboarding wave. The 48-hour idle floor exists because session activity is recorded at most once per day, so a shorter window could sign out members who are actively working.
Gumloop
Single SSO-page bullet cites configurable timeouts; no setting documented (source: SSO, SAML & SCIM - Gumloop docs, opens in a new tab)Not publicly documented: no admin-configurable session lifetime or idle timeout appears in Gumloop's public documentation. The only primary-source statement is a single bullet on the Enterprise SSO page listing "Session Management: Configurable session timeouts and secure token handling." No admin setting name, configuration steps, default session lifetime, idle-timeout value, or absolute-cap value is published anywhere in Gumloop's docs, security page, or trust center.. The bullet sits in a Security & Compliance list introduced as "Gumloop's SSO implementation follows industry security standards", alongside SOC 2 Type II certification, SAML 2.0 and TLS 1.3 entries that are compliance assurances rather than admin-configurable settings, so it does not establish a customer-facing control. The same page documents its actual admin controls in detail, including per-direction SCIM mapping-table toggles, name-based mapping mode, and named audit events, but describes no session setting; it gates SAML and SCIM settings to the Admin organization role and an Enterprise subscription, so any such control would be Enterprise-tier. Gumloop's public security page and trust center make no mention of session lifetime, idle timeout, or forced re-authentication. Because SAML SSO is available, organizations can also inherit re-authentication frequency from their upstream IdP, but that is the IdP's policy rather than a Gumloop-enforced one.
Vetted first-party integrations
Sim
(source: Sim codebase: first-party block directory, opens in a new tab)Yes: every integration in Sim's catalog is first-party authored and code-reviewed through the standard pull-request process in the main Sim repository; there is no public marketplace where an arbitrary third party can publish and have other users install executable tool code without going through Sim's own review. Custom code steps run inside Sim's own isolated-vm sandbox rather than as an installable third-party skill package, so the supply-chain trust boundary is Sim's codebase review, not an open registry.
Gumloop
(source: Custom Node Builder - Gumloop docs, opens in a new tab)Yes: Gumloop's 100+ built-in integrations are first-party nodes authored and maintained by Gumloop. Custom Nodes (user-written code steps) are built privately per account or team and shared only with named teammates or an org/link, not published to a public, searchable registry of third-party installable nodes. The separate Community Templates gallery is workflow templates built from Gumloop's own nodes, and submissions go through a Gumloop content-quality review before listing.. No public marketplace exists where an unaffiliated third-party developer publishes a Custom Node for arbitrary other users to discover and install, unlike an open community-node ecosystem. No documented security incidents involving Gumloop's Custom Nodes or Community Templates appear in public sources.
PII redaction
Sim
(source: Sim Docs: Guardrails Block, opens in a new tab)Yes: a Guardrails workflow block detects and blocks or masks PII (30+ entity types across the US, UK, and several other countries) via Microsoft Presidio, in addition to the org-level data-retention PII policy applied to stored data
Gumloop
(source: Security and trust at Gumloop, opens in a new tab)No: no Gumloop documentation, blog post, or security page describes a feature that detects and redacts or blocks PII (emails, SSNs, etc.) in workflow content or retained logs.. Gumloop's security page covers encryption, RBAC/ABAC, and audit traceability, but not PII detection or redaction.
Custom data retention
Sim
(source: Sim Docs: Data Retention, opens in a new tab)Yes: Enterprise orgs can independently configure log retention, soft-deletion cleanup, and Chat/Copilot task cleanup (chats, runs, checkpoints, Inbox tasks) at 1 day to 5 years or Forever, applied org-wide with no per-workspace override
Gumloop
(source: Security and trust at Gumloop, opens in a new tab)Yes: Gumloop's Enterprise plan includes custom data retention rules and an "Incognito Mode" for ephemeral runs with no history retention for legal/compliance-sensitive flows, alongside audit logs retained per custom policy.. Exact configurable windows (e.g. specific day counts) are not published publicly; the capability itself is confirmed as an Enterprise-tier feature.
White-labeling
Sim
(source: Sim Docs: Whitelabeling, opens in a new tab)Yes: Enterprise orgs can replace the logo, wordmark, brand name, and primary/accent theme colors across the workspace UI with their own
Gumloop
(source: Custom Slack App Integration - Gumloop docs, opens in a new tab)No: Gumloop offers only partial branding controls. A custom Slack app lets an agent appear under the customer's own bot name/avatar, and a dedicated org-specific login page is available at gumloop.com/{your-org}, but the platform's logo, product name, and theme colors are not fully replaceable across the workspace/builder and deployed-app UI.. The core canvas/builder UI itself has no comprehensive white-labeling.

AI capabilities

CompareSim vs Gumloop
Sim
Gumloop
Multi-LLM support
Sim
28 providers plus dynamic-resolution aggregators (OpenRouter, LiteLLM, etc.) (source: Sim codebase: PROVIDER_DEFINITIONS, opens in a new tab)28 provider integrations (OpenAI, Anthropic, Google/Gemini, Azure OpenAI, Azure Anthropic, Vertex, Bedrock, xAI, Mistral, DeepSeek, Groq, Cerebras, Fireworks, Together, Ollama, OpenRouter, and more), with OpenRouter, LiteLLM, vLLM, and Ollama resolving models dynamically at runtime rather than from a fixed list, so effective model reach extends well beyond the 28 named providers. apps/sim/providers/models.ts defines 28 provider entries.
Gumloop
Claude, OpenAI, Gemini, DeepSeek (source: Gumloop homepage, opens in a new tab)Multiple LLM providers without lock-in: Anthropic (Claude), OpenAI, Google (Gemini), and DeepSeek are named
Agent reasoning blocks
Sim
(source: Sim codebase: block registry, opens in a new tab)Yes: dedicated agent, function-calling, RAG, code-execution, and evaluation blocks, not just data routing
Gumloop
(source: Gumloop docs: Agents, opens in a new tab)Yes: dedicated 'Ask AI'/Agent nodes and multi-agent orchestration on the canvas, distinct from plain data-routing nodes. Docs and third-party write-ups describe an 'Ask AI' node for LLM reasoning plus an Agent Node for autonomous/agentic behavior with reflections and tool-use, beyond simple integration/data nodes.
Natural-language building
Sim
(source: Sim Docs: Chat (build and edit workflows), opens in a new tab)Yes: Chat + in-editor AI Copilot can build and modify workflows from natural-language requests
Gumloop
(source: Gumloop blog: agentic AI tools, opens in a new tab)Yes: an AI copilot named 'Gummie' builds/edits flows from natural-language descriptions
Knowledge base / RAG
Sim
(source: Sim codebase: KB schema (pgvector + tsvector), opens in a new tab)Yes: hybrid vector (pgvector) plus full-text (tsvector) search knowledge base, 15 supported file types (csv, doc, docx, htm, html, json, jsonl, md, pdf, pptx, txt, xls, xlsx, yaml, yml), configurable chunking, plus 68+ connectors that continuously sync external sources (Google Drive, Confluence, Slack, Gmail, GitHub, HubSpot, Linear, Jira, and more) into the knowledge base rather than a one-shot upload
Gumloop
Not documented as a built-in featureUnknown. No built-in vector-search or RAG knowledge-base feature is documented in Gumloop's official docs; only a community forum thread references building a custom knowledge base out of Gumloop nodes.
MCP support
Sim
(source: Sim Docs: Using MCP Tools, opens in a new tab)Yes: both MCP client (call external MCP servers) and MCP server (expose Sim workflows as MCP tools)
Gumloop
(source: Gumloop: Fully Hosted MCP Servers, opens in a new tab)Yes: native MCP client/server support with 250+ pre-built hosted MCP servers plus custom MCP server connections. Gumloop can connect to any MCP server (custom URL over HTTPS), offers 250+ fully-hosted MCP servers with zero setup, and supports both 'native MCP' (model connects directly) and a 'backend connector' mode (Gumloop executes tool calls).
Evaluation & guardrails
Sim
LLM-judge Evaluator plus Guardrails validation block (source: Sim Docs: Evaluator Block, opens in a new tab)Evaluator block (LLM-judge scoring against user-defined named metrics) and Guardrails block (JSON validity, regex, RAG/hallucination scoring, PII detection/masking). These are per-call scoring/validation primitives, not a batch golden-dataset eval-suite runner or A/B prompt-testing harness.
Gumloop
(source: Gumloop Changelog, opens in a new tab)Yes: agent chat evaluation alerts, test-case/grading tools to catch regressions, per-node test runs, and plain-English guardrail policies with human-in-the-loop approval. Product surfaces let teams define test cases and grade agent responses to catch regressions, test individual nodes with fake inputs from the canvas, set org/team/agent-level guardrail policies in plain English that can block/tag actions and log violations, and require human approval mid-task for sensitive actions.
Human-in-the-loop
Sim
(source: Sim Docs: Human in the Loop Block, opens in a new tab)Yes: dedicated approval block that pauses a run and waits for a human-submitted "Resume Form," with durable pause/resume via persisted execution snapshots and notification hooks (e.g. Slack, email) carrying the resume link
Gumloop
(source: Gumloop Docs: Agents, opens in a new tab)Yes: dedicated approval-card pause/resume, distinct from a delay step. Gumloop Agents support a Tool Management setting ("Ask for writes/deletes" or "Ask each time") that pauses the agent mid-task before it calls a sensitive tool. The approver is notified via an in-context "approval card" shown in the agent chat (available in agent chats and Slack). Once the human approves or rejects, the agent resumes exactly where it left off. Agents can also pause to ask a clarifying question with selectable options, not just approve or deny.
Generative media
Sim
(source: Sim codebase: Image Generator V2, opens in a new tab)Yes: dedicated image (3 provider families incl. OpenAI, Gemini, Fal.ai proxy), video (5 provider families incl. Runway, Veo, Luma, Hailuo, Fal.ai proxy), text-to-speech (7 providers), and speech-to-text (5 providers) blocks
Gumloop
Image generation node; no video or audio node (source: Gumloop Docs: Generate Image node, opens in a new tab)Generate Image node supporting 6 models (GPT-Image, DALL-E 3, DALL-E 2, Gemini 3.1 Flash, Gemini 3 Pro, Gemini 2.5 Flash), with 1-10 variations per prompt. No dedicated video or audio (TTS/STT) generation node is documented.. Separately, an Enterprise-level admin control lets org admins allow or deny specific AI models platform-wide and set automatic fallback models. This is a general model-governance setting, not specific to image generation.
Dynamic tool use
Sim
(source: Sim codebase: agent tool resolution (pre-wired only), opens in a new tab)No: an Agent block calls tools the workflow author explicitly added to it at build time, rather than browsing and picking from a broader pool (e.g. an entire MCP server catalog) at inference time. Runtime MCP "discovery" exists to resolve/refresh the schema of an already-configured tool. The model does not browse or choose from the server's full tool list.
Gumloop
Not publicly documentedUnknown. Not documented in Gumloop's public materials.
Automatic model fallback
Sim
(source: Sim codebase: executeProviderRequest (no retry/fallback), opens in a new tab)No: a failed or rate-limited LLM call is retried using Sim's own hosted API keys for the same model, rather than automatically switching to a different model or provider. A "fallback" comment in the provider layer refers to rotating among Sim's own hosted API keys for the same model, not switching models.
Gumloop
Not documented outside image generationUnknown. Not documented outside the model allow/deny and fallback controls described for image generation (see generativeMedia).
Agent skills
Sim
(source: Sim Docs: Agent skills, opens in a new tab)Yes: named, reusable "Agent Skills" (built on the open Agent Skills / SKILL.md format) that agents load on demand via progressive disclosure, editable in-app or imported from a SKILL.md file or GitHub URL. Only the skill name and description sit in the agent's system prompt (~50-100 tokens each); the full instructions load into context only when the agent calls load_skill.
Gumloop
(source: Agent Skills - Gumloop docs, opens in a new tab)Yes: Gumloop has a dedicated "Skills" system where a skill is a reusable folder of instructions, templates, and scripts that teaches an agent how to do a specific task. The general agent discovers skills dynamically via semantic search, and custom agents can have specific skills explicitly attached.. Described in Gumloop's own docs as "a living knowledge base" distinct from a one-off system prompt; agents can even edit/create skills themselves if that toggle is enabled.
Native chat deployment
Sim
(source: Sim Docs: Chat Deployment, opens in a new tab)Yes: a workflow can be deployed as a public, shareable Chat interface with selectable auth (public, password, email OTP, or SSO), in addition to API and MCP deployment targets
Gumloop
(source: Agents - Gumloop docs, opens in a new tab)Yes: Gumloop agents can be deployed via a public or private hosted chat page, in addition to Slack, Microsoft Teams, and an inbox channel. A conversational chat surface is a native, publicly deployable target, not just a form, API, or webhook.
Parallel execution
Sim
(source: Sim Docs: Parallel block, opens in a new tab)Yes: a native Parallel block fans a run out into concurrent branches (fixed count or one per list item) and joins their results back into the workflow automatically. Contained blocks run concurrently instead of sequentially, either a fixed number of times or once per item in a list/collection, and each branch's output aggregates for downstream blocks.
Gumloop
Partial: concurrent list-item processing (Loop Mode), no branch fan-out/fan-in node (source: Loop Mode - Gumloop docs, opens in a new tab)Partial: Loop Mode runs multiple list items concurrently (up to 15 at once on the Pro plan), but there is no documented dedicated node for splitting a single run into distinct parallel branches that later join, comparable to a fan-out/fan-in construct. Gumloop docs describe Loop Mode as processing list items simultaneously rather than one at a time, with concurrency limits tied to plan tier (15 concurrent items on Pro). This is data-parallelism over a list, not branch-level fan-out/fan-in across different paths of logic.
Agent2Agent (A2A) protocol
Sim
(source: Sim Docs: A2A integration, opens in a new tab)Yes: a dedicated A2A block sends messages to, tracks and cancels tasks on, and discovers the capabilities of any Agent2Agent (A2A)-compliant external agent via its Agent Card
Gumloop
(source: Gumloop Changelog, opens in a new tab)No: no public documentation of Agent2Agent (A2A) protocol support was found on Gumloop docs, blog, or changelog. Gumloop documents MCP client/server support (hosted MCP servers, MCP nodes) but has no mention of the A2A open standard, Agent Cards, or peer-to-peer agent discovery/invocation.
Loop / iteration block
Sim
(source: Sim Docs: Loop block, opens in a new tab)Yes: a Loop container block runs the blocks inside it repeatedly (For a fixed count, ForEach over a collection, While a condition holds, or Do-While), running iterations one after another; concurrent fan-out is a separate Parallel block
Gumloop
Partial: manually-enabled Loop Mode is concurrent, not a sequential loop node (source: Loop Mode - Gumloop docs, opens in a new tab)Partial: Gumloop's only documented iteration primitive is 'Loop Mode', the same mechanism covered under parallelExecution, which a user manually enables on a node so it runs once per item in a connected list. Per Gumloop's docs this is concurrent (15 items at once on Pro), not a strictly one-at-a-time sequential container, and no separate while-loop or fixed-iteration-count node is documented, only manually-enabled iteration over an existing list.. Gumloop docs describe Loop Mode as a mode a user enables on a node ('When you enable Loop Mode on a node...'), which then processes multiple list items simultaneously with concurrency capped by plan tier, distinct from a classic for-each node that guarantees one iteration finishes before the next starts. No dedicated while-loop (condition-based) or fixed-count repeat node is documented; all iteration requires manually enabling Loop Mode with a list as input.

Integrations

CompareSim vs Gumloop
Sim
Gumloop
Integrations
Sim
270+ integrations (5,500+ actions) (source: Sim integration catalog, opens in a new tab)270+ integrations (apps and services) exposing 5,500+ actions and 520+ triggers, plus MCP and API blocks for any other HTTP API. An integration is one app or service, the same unit other platforms count; actions are the individual operations an agent can call on it.
Gumloop
100+ nodes/integrations, 250+ MCP servers (vendor figures vary) (source: Getting Started - Gumloop docs, opens in a new tab)Vendor-claimed figures vary by page: 100+ pre-built nodes and integrations (per docs.gumloop.com), 250+ hosted MCP servers (per gumloop.com/mcp). No single authoritative exact count is published on a primary Gumloop page. docs.gumloop.com's introduction cites '100+ pre-built nodes and integrations' while gumloop.com/mcp separately cites '250+ MCP servers, zero setup'; the two pages do not cross-reference each other, and the dedicated /integrations directory page returns a 404.
Trigger types
Sim
Webhook, cron, chat, REST API, 66 app triggers, plus a diff-aware Tables trigger (source: Sim Docs: Triggers overview, opens in a new tab)Webhook, schedule/cron, chat, REST API, and event-based triggers for 66 apps (Slack, Gmail, GitHub, Stripe, etc.), plus a native row-level trigger on Sim Tables that fires on insert/update with an optional column watch-list and emits a before/after diff
Gumloop
Schedule, webhook, API, and chat triggers (source: Gumloop docs: Workflow Triggers, opens in a new tab)Schedule (daily/weekly/custom), webhook, and API-triggered runs are documented; chat-based triggering (e.g. via Slack) is also supported
Custom code steps
Sim
(source: Sim Docs: Function block, opens in a new tab)Yes: code-execution block for custom logic
Gumloop
(source: Gumloop docs, opens in a new tab)Yes: a 'run code' / custom code node lets advanced users drop in Python when visual nodes aren't sufficient
Configurable code sandboxes
Sim
(source: Sim Docs: Function block - Sandboxes, opens in a new tab)Yes: named sandboxes a workspace maintains and a Function block selects, each declaring a language, its pip or npm dependencies, optional Debian/APT system packages, and optional managed CLI tools from a catalog grouped by cloud, Kubernetes, infrastructure, deployment, data and storage, and security tools; on sim.ai they require an active Max or Enterprise plan. Only workspace admins can create or edit sandboxes, in Settings → Sandboxes. On sim.ai each specification is prebuilt into a reusable image so runs pay no install cost; a self-hosted deployment using Daytona installs the dependencies, system packages, and managed CLI tools inside the sandbox at the start of every run instead, and prebuilt images require E2B. Two sandboxes with the same language, dependency list, system packages, and managed CLI tools share one build. Every managed CLI entry uses a pinned, integrity-checked vendor artifact. Self-hosted deployments turn sandboxes on with SANDBOXES_ENABLED, and additionally need a remote execution provider and a dedicated Function base image configured. With no sandbox selected, remote code runs on the dedicated Function base; import-free JavaScript stays in the local isolated runtime and ignores the sandbox selection either way.
Gumloop
(source: Run Code - Gumloop docs, opens in a new tab)No: the Run Code node executes against a fixed, Gumloop-controlled runtime. Users import from a vendor-curated preinstalled list (Python: pandas, numpy, scipy, xarray, opencv-python, scikit-image, scikit-learn, nltk, spacy, beautifulsoup4, requests, aiohttp, matplotlib, plotly, openpyxl, python-docx, librosa and others published at a Gumloop-hosted requirements.txt; JavaScript: the `ai` SDK plus @ai-sdk/openai, azure, anthropic, amazon-bedrock, google, google-vertex, mistral, cohere and groq). There is no documented way to declare npm/PyPI dependencies, install OS-level system packages, or specify CLI binaries for the runtime.. Gumloop docs describe importing packages only via a plain `import` (Python) or `require` (JavaScript) statement drawn from the published list, with no pip/npm install step. Custom Nodes run in what the docs call "an isolated virtual environment with a 5-minute runtime limit" but likewise document no dependency declaration. On the Gumloop forum, a staff member responding to a Run Code failure caused by unavailable libraries pointed the user back to the published list and suggested a Custom Node as a workaround rather than any package-installation path. Gumloop also ships no downloadable self-managed install of the core platform (see platform.selfHostOption), and its enterprise VPC deployment is operated by Gumloop, so no customer-supplied runtime image is documented there either.
API publishing
Sim
(source: Sim Docs: API Reference - Getting Started, opens in a new tab)Yes: a public REST API (mostly under /api/, with /api/v1 reserved for logs and audit-log endpoints) supporting API-triggered workflow execution and deployment rollback. The API reference does not document SSE streaming, a resumable event buffer, a dedicated API-trigger block, or a chat-deployment surface as part of the REST API itself.
Gumloop
(source: Gumloop docs: JavaScript SDK, opens in a new tab)Yes: flows can be triggered via REST API and a JavaScript SDK; agents embedded in a flow can be called via the same API. Execution is asynchronous: start a flow run via API/SDK, then poll a run-by-ID endpoint for status and structured outputs.
SDKs & extensibility
Sim
Official Python and TypeScript SDKs, plus MCP, code block, and A2A protocol (source: Sim Docs: Python SDK, opens in a new tab)Official client SDKs exist for Python (simstudio-sdk, pip install simstudio-sdk) and TypeScript/JavaScript (simstudio-ts-sdk, npm install simstudio-ts-sdk), both wrapping the REST API (x-api-key header) with methods like execute_workflow / executeWorkflow, retry-with-backoff, and usage-limit lookups. Extensibility is further extended by MCP (client + server), a sandboxed code-execution block (JS/Python), custom tools, and an Agent-to-Agent (A2A) protocol block for external agent interop
Gumloop
JS/Python SDKs plus AI custom node builder (source: Gumloop Docs: JavaScript SDK, opens in a new tab)Official JS/TypeScript and Python SDKs, plus an in-product AI-assisted Custom Node Builder; no public third-party marketplace yet. Gumloop publishes official client SDKs for JavaScript/TypeScript (`npm install gumloop`, GumloopClient, github.com/gumloop/gumloop-js) and Python (github.com/gumloop/gumloop-py) for starting automations and retrieving outputs programmatically. Separately, the in-app "Custom Node Builder" lets users describe desired functionality in natural language and have AI generate a deployable custom node that integrates with any API, shareable with teammates (editor access) within a workspace. A public node-selling marketplace and "official Gumloop integrations built as custom nodes" are a stated future direction, not a shipped marketplace today.
Publish as MCP server
Sim
(source: Sim Docs: MCP Deployment, opens in a new tab)Yes: any deployed workflow can be published as a tool on an MCP server (private, API-key protected, or public/no-auth), with ready-to-paste client config generated for Codex, Cursor, Claude Code, Claude Desktop, and VS Code
Gumloop
(source: Fully Hosted MCP Servers for Your AI Agents - Gumloop, opens in a new tab)No: Gumloop's MCP capability mainly runs in the consuming direction. It connects agents/workflows to 250+ fully hosted MCP servers and lets users add custom MCP servers as tool sources. No official Gumloop documentation describes publishing a user's deployed workflow itself as a callable MCP server for external AI tools to consume.. A third-party, unofficial open-source project ("gumloop-mcp" on GitHub) wraps the Gumloop management API as an MCP server, but that is not the same as natively publishing a specific deployed workflow as an MCP tool, and it is not an official Gumloop product.

Observability & durability

CompareSim vs Gumloop
Sim
Gumloop
Tracing & observability
Sim
(source: Sim codebase: TraceSpan tree builder, opens in a new tab)Yes: execution logs include a per-block/per-span trace view (duration, cost, token counts, and latency stats like TTFT/TPS) with expandable nested iteration groups, plus a "View Snapshot" frozen copy of the workflow structure and block states at run time for debugging. This trace view is built directly into Sim rather than a raw export browsable in an external tool like Jaeger, and does not expose aggregate latency-percentile charts (p50/p95/p99). The run snapshot serves as a log-detail/debugging artifact rather than a resumable mid-run checkpoint.
Gumloop
Per-node run trace; no aggregate metrics dashboard (source: Gumloop Docs: Run Log, opens in a new tab)Customer-facing per-node execution trace with duration/cost, but no aggregate metrics dashboard (percentiles/error-rate) found. Gumloop's "Run Log" is a customer-facing execution trace view. For every run it shows per-node execution status, inputs/outputs, per-node execution time and credit cost, a subflow detail drill-down, and per-iteration visibility for Loop Mode nodes, plus a workflow summary of total time and total credits, accessible via a `run_id`-scoped URL. No cross-run metrics dashboard (e.g. latency percentiles or aggregate error rates across many runs) is documented. The Run Log is built for debugging one execution at a time, not fleet-wide observability.
Durability & retries
Sim
Tool-call retries (up to 10x); single-attempt job orchestration (source: Sim codebase: ToolRetryConfig (exponential backoff), opens in a new tab)Individual tool/API calls have configurable exponential-backoff retry (up to 10 attempts). The background job-orchestration layer itself retries only once by design. Durability instead comes from consecutive-failure tracking on schedules and the human-in-the-loop snapshot pause/resume mechanism. Sim does not offer guaranteed-once-only block execution, a failed-run holding queue for manual recovery, or a "replay a past execution with its original inputs" feature. The per-execution debugging snapshot serves as a log-detail artifact rather than a resumable mid-run checkpoint.
Gumloop
(source: Gumloop Docs: Run Log, opens in a new tab)No automatic retries, no execution checkpointing, no run replay with original inputs. Only a manual "Error Shield" node and workflow-level (not run-level) checkpoints. Gumloop's Run Log documentation makes no mention of automatic node retries, mid-run checkpointing of execution state, or the ability to replay a past execution with its original inputs. Failure handling is opt-in and manual via an "Error Shield" node that wraps other nodes to catch errors and prevent a full workflow crash, something designed into the workflow rather than automatic infrastructure-level retry/replay. Gumloop's "checkpoints" feature (see platform.versionControlDepth) snapshots workflow definitions, not individual run state, so it is unrelated to run durability.
Failure alerting
Sim
(source: Sim Docs: Sim Workspace Events trigger, opens in a new tab)Yes: a sim_workspace_event trigger fires on run success/failure, deployments, and cost/latency spikes, wired to any notification block (Slack, email, webhook) for real-time alerting
Gumloop
(source: Gumloop Docs: Alerts, opens in a new tab)Yes: proactive email push notification on workflow failure (Pro plan+); credit-usage thresholds are separate/lookup-based. Gumloop supports configuring email notifications for workflow failures directly from a workbook's side panel. This requires a Pro plan or higher and can be scoped to "Alert only on trigger-based failures" so manual test runs don't spam alerts. The failure email includes the workflow name, a run link, and error details, a proactive push rather than something you look up after the fact. Credit/cost-threshold notifications are configured separately on the Subscription page and read more like a lookup setting than a proactive per-threshold push alert.
Data drains
Sim
(source: Sim Docs: Data Drains, opens in a new tab)Yes: Enterprise orgs can continuously export workflow logs, job logs, or audit logs on a schedule to a customer-owned S3 bucket, GCS bucket, Azure Blob container, BigQuery table, Snowflake table, Datadog logs intake, or an HTTPS webhook. Each drain exports exactly one data source; multiple drains are created to export multiple sources. Viewing drain config/run history is restricted to org owners/admins.
Gumloop
(source: Usage Data Export / Data Drains - Gumloop docs, opens in a new tab)Yes: Gumloop's Enterprise "Data Drains" feature continuously pushes organization data (workflow runs, agents, agent interactions, credit logs, audit logs, and MCP tool calls) to an external destination: an HTTP/OTLP custom endpoint, Amazon S3, or Datadog. It polls every 15 seconds to 10 minutes and tracks sync state to avoid duplicates, in addition to one-time CSV exports.. This is a distinct Enterprise capability separate from one-time snapshot exports.
Async execution
Sim
(source: Sim codebase: async execution handler, opens in a new tab)Yes: a workflow can be triggered in fire-and-forget async mode, returning HTTP 202 with an execution ID immediately, then polled through the canonical execution resource across queued/running/terminal states. Async runs are tracked by execution ID through the same execution status endpoint used for durable logs rather than a separate queue-job resource.
Gumloop
(source: Gumloop API Reference: Getting Started, opens in a new tab)Yes: Gumloop's API triggers workflows asynchronously. A POST to the start_pipeline endpoint returns immediately with a run_id, and the caller polls a separate get_pl_run endpoint (passing that run_id) to check status, logs, and retrieve outputs once the run completes.. Documented pattern: POST https://api.gumloop.com/api/v1/start_pipeline to start, GET https://api.gumloop.com/api/v1/get_pl_run?run_id=... to poll for completion and outputs.
Execution limits
Sim
5-50 min sync; async defaults to 90 min, Enterprise up to 7 days (source: Sim Docs: Concurrent Executions, opens in a new tab)Plan-gated: synchronous runs time out at 5 minutes on the free plan and 50 minutes on paid plans; async runs default to 90 minutes, while Enterprise policy can be configured up to 7 days; concurrency ranges from 10 to 1,000 executions per billing account depending on plan. A direct async API request can shorten the account policy for that request, but cannot extend it. Concurrency limits are published in the platform cost docs, where the Enterprise limit is 1,000 by default and customizable. A run that exceeds its time limit is terminated and marked failed with a timeout error.
Gumloop
5 concurrent runs on Pro; no published timeout (source: Gumloop Pricing (concurrency by plan), opens in a new tab)Gumloop publishes concurrency limits by plan on its pricing page: Pro allows 5 concurrent workflow runs and 25 concurrent agent chats, and Enterprise limits are custom. Gumloop does not publicly document a maximum execution duration or per-request timeout for a single workflow run.. Numbers taken from the pricing page comparison table. No max single-execution runtime or timeout figure is published in Gumloop's docs or pricing page.
Partial-failure handling
Sim
(source: Sim codebase: error-output edge routing, opens in a new tab)Yes: any block can be wired to a dedicated error-output edge, so a failing step routes execution down an error-handling branch instead of always halting the entire run
Gumloop
(source: Gumloop Docs: Error Shield node, opens in a new tab)Yes: Gumloop offers an Error Shield node that wraps another node, catching its failure and routing execution down a separate Error Path while a Success Path carries forward normal results. This means a single failing step does not have to halt the whole run. In Loop Mode this happens automatically per iteration. For single-item flows outside Loop Mode, a Join Paths node is required to reconnect the error branch so the workflow keeps going instead of dead-ending.. Without Error Shield (or without Join Paths in non-loop cases), a node failure stops the whole workflow, per Gumloop's docs.
Unattended execution
Sim
(source: Sim codebase: trigger.dev background job backend, opens in a new tab)Yes: scheduled, webhook, and chat-triggered runs execute as background jobs on trigger.dev workers, entirely on Sim's servers. No client device needs to be open, awake, or connected for a run to fire or complete; closing the browser tab or shutting down a laptop has no effect on a scheduled or triggered workflow.
Gumloop
(source: Gumloop API Reference: Getting Started, opens in a new tab)Yes: scheduled, webhook, and API-triggered runs execute on Gumloop's own cloud infrastructure with no dependency on a client device staying open, awake, or connected. Gumloop's own asyncExecution pattern confirms this: a POST to the start_pipeline API returns a run_id immediately and the run continues on Gumloop's servers, polled later via get_pl_run. Schedule, webhook, and API triggers documented under integrations.triggerTypes are server-side entry points into the same hosted platform, not a desktop app or local agent; there is no published requirement for a browser tab, desktop client, or local session to stay active for a triggered run to fire or finish.

Support

CompareSim vs Gumloop
Sim
Gumloop
Support channels
Sim
Community support plus Enterprise 'Dedicated Support' (source: Sim Pricing Page, opens in a new tab)Community (open source, GitHub) plus an unquantified "Dedicated Support" flag on the Enterprise plan. Enterprise and pricing pages do not include CSM, onboarding/enablement, or professional-services details beyond a plan-comparison-table "Dedicated Support" flag.
Gumloop
Email on Pro, dedicated Slack on Enterprise (source: Gumloop Pricing, opens in a new tab)Email support on Pro and dedicated Slack support on Enterprise, plus the Gumloop University learning resource
SLA
Sim
(source: Sim Pricing Page, opens in a new tab)Yes: the Enterprise plan includes a "Dedicated Support" feature per the pricing plan-comparison table; no SLA terminology, response-time, or uptime figures are published on the enterprise or pricing pages
Gumloop
Not publishedUnknown. Gumloop's pricing and trust pages publish no SLA or response-time commitment.
Community
Sim
100,000+ builders (source: Sim Landing Page, opens in a new tab)Over 100,000 builders use Sim
Gumloop
Not publicly disclosedUnknown. No public Discord/Slack member count or GitHub star count exists for the core Gumloop product; Gumloop's public GitHub org hosts only SDK/client repos (gumloop-py, gumloop-js, guMCP_template), not the core product.
Academy / training
Sim
(source: Sim Documentation, opens in a new tab)No: Sim provides product documentation and API reference guides without a dedicated academy or certification program
Gumloop
(source: Gumloop University, opens in a new tab)Yes: Gumloop runs "Gumloop University," a structured learning resource with self-paced courses (e.g. "Getting Started with Gumloop"), live webinars, and week-long "Learning Cohorts" that award a certificate of completion for finishing practical challenges.. Certification is tied to completing cohort challenges rather than a formal exam-based program, but it is a structured curriculum beyond ad hoc docs/blog posts.

Sim standout features

AI Copilot / Chat agent-building surface (source: Sim Docs: Chat (build and edit workflows), opens in a new tab)

Chat builds and manages work across the workspace; in-editor Copilot edits a single workflow.

A workspace-wide natural-language surface (Chat) that can build workflows, manage data, and take actions across integrations, plus an in-editor Copilot scoped to building and editing a single workflow directly.

Hybrid semantic + keyword knowledge base (source: Sim codebase: KB schema + file-parsers, opens in a new tab)

Combines vector and full-text search with configurable chunking across 15 file types.

Built-in RAG with pgvector embeddings and a generated tsvector column for combined vector + full-text search, plus a token-based chunker with configurable chunk size/overlap and 15 supported file types (csv, doc, docx, htm, html, json, jsonl, md, pdf, pptx, txt, xls, xlsx, yaml, yml).

Native MCP client and server (source: Sim Docs: MCP Deployment, opens in a new tab)

Call external MCP servers as tools, or expose Sim workflows as an MCP server.

A dedicated MCP block lets any workflow call external MCP servers as a tool, and a serve/workflow-servers API surface lets Sim expose its own workflows as MCP servers.

Fork a workspace into dev, qa, and prod environments (source: Sim Docs: Workspace Forks, opens in a new tab)

Fork, diff, and promote environments with mandatory credential remapping.

Fork a whole workspace into a dev/qa/prod-style child environment, preview a diff, and promote changes bidirectionally. Credential and env-var remapping is required on every promote, so secrets never cross environments silently.

Human-in-the-loop approvals with durable resume (source: Sim Docs: Human in the Loop Block, opens in a new tab)

Pause a run for human approval and resume later via a durable snapshot link.

A dedicated block pauses a run and waits for a human-submitted approval form, backed by persisted execution snapshots so the run can resume later via a link, even after a server restart.

Self-hostable under Apache 2.0 (source: Sim Docs: Introduction (FAQ - Open Source License), opens in a new tab)

Apache 2.0 core with Docker Compose and Helm deployment options.

Open-source core under Apache 2.0, with Docker Compose files and a Helm chart for Kubernetes deployment, alongside a managed cloud-hosted option. Enterprise features (SSO, SCIM, audit logs, access control, workspace forks) are separately licensed and require an Enterprise subscription for production use.

Live multiplayer canvas editing (source: Sim codebase: realtime presence handler, opens in a new tab)

Real-time cursors, selections, and synced edits on the same canvas.

Real-time cursors, selection broadcasting, and synced concurrent edits over a dedicated realtime backend, so a team can build the same workflow together at the same time.

Documented Gumloop limitations

No public self-hosting of the core platform (source: Gumloop Security & Trust, opens in a new tab)

No downloadable self-hosted install. Only managed SaaS or enterprise VPC.

Gumloop is only available as managed SaaS or an enterprise-managed VPC deployment operated by Gumloop inside a customer's cloud project. There is no downloadable, self-managed install of the Gumloop application itself; Gumloop's own guMCP_template repo is a self-hosted MCP-server starter, not an install of the platform.

Proprietary license, closed source (source: Gumloop Terms of Service, opens in a new tab)

Closed commercial product with no open-source core.

The core Gumloop application has no open-source license; Gumloop's own Terms of Service state the Service, its features, and its functionality "are and will remain the exclusive property of AgentHub Inc. (doing business as Gumloop) and its licensors," unlike some workflow-automation competitors that ship an open-source core.

Inconsistent/unclear integration count across vendor pages (source: Getting Started - Gumloop docs, opens in a new tab)

Vendor pages cite different integration counts with no single authoritative figure.

Gumloop's own pages give differing figures for integrations: its docs introduction cites '100+ pre-built nodes and integrations,' while its dedicated MCP page separately advertises '250+ MCP servers.' These may be different countable categories (native nodes vs MCP-protocol connectors), but neither page cross-references the other, and the dedicated /integrations directory page still returns a 404, making an exact, citable integration count hard to pin down from primary sources.

No documented built-in vector-search/RAG knowledge base feature in primary docs (source: Gumloop forum: Building a knowledge base for RAG, opens in a new tab)

No official docs describe a built-in RAG or vector-database knowledge base.

No official Gumloop documentation describes a dedicated, built-in vector-database/RAG knowledge-base capability. Only a user forum thread and a third-party tutorial reference building a 'knowledge base' with Gumloop nodes.

Bottom line

Choose Sim if you want an open-source, self-hostable AI workspace that treats AI agents as first-class citizens: native multi-LLM support, real-time multiplayer editing, human-in-the-loop approvals, and, on the Enterprise plan, environment promotion (dev/qa/prod) and governance (SSO, credential-level permissions, audit logs) built in rather than bolted on.

Choose Gumloop if you specifically need 250+ fully hosted MCP servers: Gumloop offers 250+ pre-built, zero-setup hosted MCP servers spanning popular services, letting agents connect to external tools without manual configuration.

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Frequently asked questions

Gumloop has no public self-hosted install: its app is proprietary, and the closest option is an optional Enterprise deployment into your own cloud (VPC). Sim's core is Apache 2.0 licensed and can be self-hosted with Docker Compose or Kubernetes (Helm), so your team runs the whole platform. On Gumloop's VPC option, compute is not billed in credits because it runs on your infrastructure, but model, tool-call, and orchestration charges still apply.

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