How much does Sim cost?

Free open source core and a Free plan with 1,000 one time credits; Pro $25 per user a month with 6,000 credits a month plus 2,000 a week; Max $100 per user a month with 25,000 credits a month plus 4,000 a week; annual billing saves 15%. Credits are $0.005 each with a 1 credit base charge per run; hosted model keys carry a 1.1x multiplier while BYOK bills at base provider pricing. Self hosting is free; Enterprise adds SSO, access control, SOC 2 compliance and self hosting support.

What are the best alternatives to Sim?

Based on documented capability coverage across the Agentic Index 14 point taxonomy, the closest alternatives to Sim among agent builders are Dynamiq, AutoGPT, Camunda, Flowable. Each is graded on the same public evidence, and no vendor pays for placement.

Does Sim support MCP and tool calling?

Full under the Agentic Index verification standard. Sim publishes public evidence of Model Context Protocol (MCP) support, tool calling, and API or SDK extensibility for connecting agents to external tools. Evidence basis: Sim is open source under Apache 2.0 with the full source on GitHub, a public API and SDKs, a Function block for custom JavaScript, custom tools, and MCP in both directions, so agents consume MCP tools and any workflow deploys as an MCP serv. Graded from public evidence only against the Agentic Index 14 point capability taxonomy. No vendor pays for placement.

Does Sim have SOC 2, SSO and role based access control?

Full under the Agentic Index verification standard. Sim publishes public evidence of enterprise security and identity controls, covering a compliance posture such as SOC 2 or ISO 27001, single sign on (SSO or SAML), and role based access control (RBAC). Evidence basis: Sim's Trust Center at trust.sim.ai lists SOC 2 Type II, ISO 27001 and GDPR, and SOC 2 compliance is among the Enterprise features. Access controls include SAML 2.0 and OIDC SSO across Okta, Entra ID, Google Workspace and ADFS, workspace rol. Graded from public evidence only against the Agentic Index 14 point capability taxonomy. No vendor pays for placement.

Can Sim be self hosted or run in a private VPC?

Full under the Agentic Index verification standard. Sim publishes public evidence of self hosted or private VPC deployment, along with data residency options for controlling where agent data is processed and stored. Evidence basis: Sim runs cloud hosted at sim.ai or self hosted through Docker Compose and Kubernetes, including a fully offline setup with local models through Ollama, and self hosted deployments unlock the entire enterprise feature set through environment. Graded from public evidence only against the Agentic Index 14 point capability taxonomy. No vendor pays for placement.

Back to vendors

Sim

Q: Who is Sim for?

developers, technical teams, enterprise

Also known as: Sim Studio

Visit site

Agent builderindependentVerified 2026-09-29

Entry price$25 per user a month for Pro, with 6,000 credits a month plus a weekly refresh.Full pricing detail

Open source AI workspace where teams build, deploy and manage agent workflows visually, conversationally through Mothership, or in code.

Sim is an open source AI workspace where teams build, deploy and manage agent workflows. A workspace holds workflows, the visual programs made of blocks where logic runs, alongside the resources those workflows act on: tables of structured rows, knowledge bases and files. Systems are built three ways that mix freely, visually in the workflow builder, conversationally through Mothership, which scaffolds workflows, tables and knowledge bases from a description, or programmatically through the API and SDK.

Core blocks divide into those that do work, such as Agent, Function and API, those that direct flow, including Router, Condition, Loop and Parallel, and those that shape a run, including Guardrails, Human in the Loop, Wait and Evaluator.

The Agent block reaches more than fifteen model providers, including OpenAI, Anthropic, Google Gemini, Mistral, xAI, DeepSeek, Groq, Cerebras, Azure OpenAI, Azure Anthropic, Vertex AI, Bedrock and OpenRouter, plus local models through Ollama or VLLM. Bring your own key is billed at base provider pricing with no markup. Memory is configured per agent across four modes and persists across runs when keyed by a conversation identifier. Knowledge bases are a native vector store with chunking strategies, tag filtering and retrieval debugging.

More than a thousand native integrations expose external services to agents as tools, with MCP support in both directions. Agents consume MCP tools, and any workflow deploys as an MCP server. Six native triggers start a run, and deployments expose a workflow as an API, a chat interface or an MCP server. Logs record every run block by block, audit logs track configuration and security actions, and data drains stream both to an S3 bucket the customer owns or to an HTTPS webhook. The platform is Apache 2.0 licensed and can be self hosted through Docker Compose or Kubernetes, including a fully offline configuration with local models.

Vendor details

Canonical URL

https://sim.ai

Funding status

Y Combinator X25; $7M Series A reported November 2025, led by Standard Capital

Company status

independent

Use cases & customers

Primary use cases

agent workflow buildingbusiness process automationAI assistants and chatbotsdata processing and analysis

Target customers

developerstechnical teamsenterprise

Deployment options

SaaSself-hosted

Integrations

More than 1,000 native integrations span communication, productivity, development, CRM, data, search and security tools. Anything not built in connects through MCP, and workflows can deploy as MCP servers.

In practice

Your security team will not let customer data pass through a hosted workflow tool. Sim self hosts with Docker Compose or Kubernetes, even fully offline with local models through Ollama, and a self hosted deployment unlocks the full enterprise feature set.

An agent drafts customer replies, and you want a person to sign off before anything goes out. A Human in the Loop block holds the workflow for review, and an Evaluator block scores each draft against your own metrics so a Condition block can route weak ones back.

Your team wants agents working across Slack, Salesforce and Jira without wiring each API by hand. More than 1,000 native integrations act as tools inside a Sim workflow, and Mothership can scaffold that workflow from a plain description.

Sources & related URLs

Related / legacy domains

https://docs.sim.ai https://github.com/simstudioai/sim https://ai4.sim.ai

Research sources

https://docs.sim.ai/introduction https://docs.sim.ai/platform/enterprise https://www.sim.ai/ https://github.com/simstudioai/sim https://www.ycombinator.com/companies/sim

Agentic Index coverage score

13.0 / 14 capabilities · 93%

Integrations & Tool Calling	Full
More than 1,000 native integrations span communication (Gmail, Slack, Teams, Telegram, WhatsApp), productivity (Notion, Google Workspace, Airtable), development (GitHub, Jira, Linear), CRM and revenue (Salesforce, HubSpot, Attio, Gong), data and search (PostgreSQL, BigQuery, Pinecone, Perplexity, Exa) and security and IT (CrowdStrike, Okta, AWS IAM), exposed to agents as tools inside workflows. Anything not built in connects through MCP. Sourcedocs.sim.ai/introductionread 2026-09-29
Workflow Orchestration	Full
A visual workflow builder offers built in control blocks including Router, Condition, Loop, Parallel and a Workflow block for composing sub workflows. Agents reason inside Agent blocks and act through tools, and Mothership, the natural language control plane, scaffolds and edits workflows, tables and knowledge bases across the workspace, with API and SDK build paths running alongside the canvas. Sourcedocs.sim.ai/introductionread 2026-09-29
Knowledge Grounding & RAG	Full
Knowledge bases are a workspace resource of their own, with connectors, tag based filtering, chunking strategies and retrieval debugging, and agents retrieve relevant passages from customer documents to ground answers. Sourcedocs.sim.ai/tools/knowledgeread 2026-09-29
Human Oversight & Guardrails	Full
Human in the Loop and Guardrails ship as core workflow blocks alongside Condition and Wait, and enterprise access control enforces which blocks and model providers each permission group can use, both in the UI and at execution time. Sourcedocs.sim.ai/introductionread 2026-09-29
Security, Identity & Governance	Full
Sim's Trust Center at trust.sim.ai lists SOC 2 Type II, ISO 27001 and GDPR, and SOC 2 compliance is among the Enterprise features. Access controls include SAML 2.0 and OIDC SSO across Okta, Entra ID, Google Workspace and ADFS, workspace roles and permission groups enforced at execution time, verified domains, session policies with maximum lifetime, idle timeout and sign out of all members, dedicated outbound IPs, secrets management and configurable data retention. Sourcesim.ai homepage and pricing page, docs.sim.ai enterprise Security pageread 2026-09-29
Observability & Auditability	Full
Logs record every run block by block as a workspace resource of their own, with logging and alerts, cost visibility for each run, enterprise audit logs tracking configuration and security relevant actions, and data drains that stream workflow logs, audit logs and Mothership data to a customer owned S3 bucket or HTTPS webhook on a schedule. Sourcedocs.sim.ai/introductionread 2026-09-29
Memory & State Persistence	Full
Memory on the Agent block needs a conversation ID to persist across runs, and the agent can be set to one of four memory modes. None sends independent requests, Conversation holds the full history keyed by a conversation ID, Sliding Window by messages keeps the N most recent, and Sliding Window by tokens keeps messages up to a token limit. The Mem0 integration lets agents keep persistent memory across workflow executions, recalling past conversations, remembering user preferences and building on previous interactions, with add, semantic search and retrieve operations, and Zep ships as a second external memory option. Tables hold durable structured rows that workflows read and write, and Variables carry in-run state. Sourcedocs.sim.ai agent block, Mem0 tool and workflow documentationread 2026-08-31
Deployment & Data Residency	Full
Sim runs cloud hosted at sim.ai or self hosted through Docker Compose and Kubernetes, including a fully offline setup with local models through Ollama, and self hosted deployments unlock the entire enterprise feature set through environment configuration, so the customer can control hosting entirely. Sourcedocs.sim.ai/introductionread 2026-09-29
Prebuilt Agents, Templates & Packs	Partial
Agent skills provide reusable packaged capabilities and Mothership scaffolds complete systems from a natural language description, and Sim does not describe a template gallery, prebuilt agent library or marketplace. Sourcedocs.sim.ai/introductionread 2026-09-29
Triggers & Channel Coverage	Full
Six core triggers, Start, Schedule, Webhook, RSS Feed, Table and Sim Workspace Events, start workflows, and deployments expose any workflow to the outside world as an API, a chat interface or an MCP server. Sourcedocs.sim.ai/introductionread 2026-09-29
Model Flexibility & Routing	Full
More than fifteen providers are supported, including OpenAI, Anthropic, Google Gemini, Groq, Cerebras, DeepSeek, Mistral, xAI and OpenRouter, with bring your own key at base provider pricing and no markup, and local models run through Ollama or VLLM at no API cost. Enterprise permission groups can restrict which providers are allowed. Sourcedocs.sim.ai/blocks/agentread 2026-09-29
APIs, SDKs & MCP Extensibility	Full
Sim is open source under Apache 2.0 with the full source on GitHub, a public API and SDKs, a Function block for custom JavaScript, custom tools, and MCP in both directions, so agents consume MCP tools and any workflow deploys as an MCP server, with enterprise custom blocks on top. Sourcedocs.sim.ai/introductionread 2026-09-29
Testing, Debugging & Optimization	Full
The Evaluator block is a core block that uses AI to score and assess content quality against metrics the customer defines, each with a name, description and numeric range, with accuracy, clarity and relevance on one to five scales as worked examples. The block generates a JSON Schema response format from those metrics and enforces strict mode so the model returns only numeric scores, and it supports quality control and A/B testing, including comparing several AI generated responses and assessing Agent block outputs to create feedback loops. A published pattern chains Agent to Evaluator to Condition against a threshold. Guardrails, knowledge base retrieval debugging, block-by-block run traces and per-run cost visibility help with debugging. Sim does not describe keeping test sets, stored expected outputs or a regression history across versions. Sourcedocs.sim.ai evaluator block and core blocks documentationread 2026-08-31
Browser & Computer Use	Partial
Browser Use and Stagehand ship as workflow tools in the integrations catalog alongside Apify and Bright Data, letting workflows drive real browsers against interfaces that expose no programmatic API, with Stagehand performing natural language navigation and action on live pages. These are third party browser engines wired in as catalog integrations, not a hosted or local browser or desktop session Sim runs itself. Sourcedocs.sim.ai tools catalogread 2026-08-31

The Agentic Index coverage score grades every vendor Full, Partial or Not documented against the same 14 buyer facing capabilities, from public evidence only. Each capability links to how all vendors in the index score on it. How this evidence is graded

Product updates

October 26, 2026·IntegrationsVerified

Sim 0.9.32 adds an Amazon EC2 integration. Agents and workflows can now inspect and control instances, create disk snapshots and manage resource tags, using an AWS access key with the required permissions. The same release lets teams export a knowledge base and import it into another workspace or deployment.

Bears on: Integrations

View source

September 28, 2026·IntegrationsVerified

Sim v0.9.4 connected its workflows to the native analyst agents in Snowflake and Databricks. A workflow can now turn a plain English question into SQL through Snowflake Cortex Analyst, and Sim agents can ask Databricks Genie spaces questions and get back answers, the generated SQL, results and charts, or run Genie's multi step research mode.

Bears on: Integrations

View source

View all 2 Sim updates →Tracked since Sep 2026 · Verified from public vendor sources

Pricing

$25 per user a month for Pro, with 6,000 credits a month plus a weekly refresh.

Credits. Paid plans are priced per user a month, and each plan carries a credit allowance that runs and model usage draw down.

Free tier

Included quota

Pro includes 6,000 credits a month plus a weekly refresh of 2,000, and Max includes 25,000 a month plus 4,000 a week. The Free Community plan gets 1,000 one time credits. One credit equals $0.005, and every run carries a 1 credit base charge.

Cost watchouts

Hosted model keys carry a 1.1x multiplier on base model pricing. SSO and access control require the separate enterprise license in production, even when self hosted.

Variable cost rationale

Sim meters credits, at $0.005 each. Every run carries a 1 credit base charge, and model tokens draw credits on top, so AI heavy workflows spend most of their credits on tokens. Hosted model keys carry a 1.1x multiplier on base model pricing. The bill grows with the number of runs and the size of the models they call. Default caps stop runs when a plan's credits are used up, and overage starts only when on demand billing is turned on or the usage limit is raised. Bringing your own keys (BYOK) or running local models moves model spend off Sim entirely, and self hosting the open source core is free.

Overage / add-ons

Usage is capped at plan credits by default, and runs stop at the cap. Turning on on demand billing or raising the usage limit allows overage, billed at the end of the period.

Sales call required

Mixed (some tiers require a call)

Free / trial

Free plan with 1,000 one time credits and no billing required, and free unlimited self hosting

Lowest paid plan

Pro at $25 per user per month, billed monthly, with 6,000 credits a month

Missing data

Enterprise pricing is contact only.

Agentic Index verified 2026-09-29

Official pricing page Docs

Related vendors

Alternatives to Sim

The closest documented capability profiles to Sim among agent builders tracked by Agentic Index, ordered by similarity on the same 14 point evidence the rankings use. No vendor pays for placement.

Dynamiq13.5 / 14Fuller documented coverage on Browser & Computer Use
AutoGPT13.0 / 14Fuller documented coverage on Prebuilt Agents, Templates & Packs
Camunda14.0 / 14Fuller documented coverage on Prebuilt Agents, Templates & Packs and Browser & Computer Use
Flowable13.0 / 14Fuller documented coverage on Browser & Computer Use
FLOWX.AI14.0 / 14Fuller documented coverage on Prebuilt Agents, Templates & Packs and Browser & Computer Use
n8n13.0 / 14Fuller documented coverage on Prebuilt Agents, Templates & PacksSim vs n8n →

Similarity is computed from each vendor's Agentic Index coverage score evidence, axis by axis, not from the totals. How this evidence is graded

Compare Sim with other vendors →Compare all agent builders →See where Sim ranks →

Data confidence: high

Head to head

Sim vs DifySim vs CoworkerSim vs StackAISim vs LangflowSim vs n8n

Sim