Sim
Open-source workspace for building and running AI agents
What is Sim?
Sim is an open-source AI workspace where teams build, deploy and monitor agents. Agent logic is assembled from blocks on a visual canvas, described in a chat, or driven through the API and CLI, and it draws on built-in knowledge bases, tables and files. Workflows are deployed as an API, a chat or an MCP server, and every run is logged block by block. Sim is offered as a hosted cloud billed in credits and as Apache-2.0 code you can self-host with Docker or Kubernetes.
Sim has a free plan. Paid plans start at $21.25 per user / month, billed annually ($255); $25 billed monthly. See every plan
Good for
- Teams building internal agents that share knowledge bases, tables and logs
- Developers who want a visual builder plus an API and a CLI
- Organizations that need to self-host an open-source agent platform
Worth knowing
- The Free plan's 1,000 credits are a one-time grant with no weekly refresh, and it allows 1 workspace and no teammates.
- Every workflow run carries a base charge of 1 credit, even when you bring your own model keys.
- Sim Mailer, KB Live Sync, sandboxes and Slack Connect start at Max; access control and SSO are Enterprise only.
- The desktop app is for macOS only (macOS 12 or later); on other systems Sim is used in a browser.
Key features
- Workflow builder
- Agent logic is laid out as connected blocks: agents, API calls, functions, conditions, routers, loops, parallel branches and human-in-the-loop steps.
- Building in Chat
- Describe a system in plain language and Chat scaffolds the workflows, tables and knowledge bases, which you then open, run and refine in the builder.
- Knowledge bases, tables and files
- Knowledge bases draw on uploaded documents and on connectors to sources such as Notion, Google Drive, Confluence and SharePoint. Tables hold structured rows, and files store agent inputs and outputs.
- Triggers and deployment
- Workflows start from a schedule, a webhook, an RSS feed or a table event, and are deployed as an API endpoint, a chat interface or an MCP server.
- Logs and cost tracking
- Each run is traced block by block, with token counts and cost per model, and alerts can be set on the logs.
- Enterprise governance
- The Enterprise plan adds SSO and SCIM provisioning, permission groups that decide which models and integrations a group may use, audit logs and data retention settings.
Sim pricing
- Starts at
- $21.25 per user / month, billed annually ($255); $25 billed monthly
- Free plan
- 1,000 one-time credits (1 credit is $0.005), 1 workspace, 5 GB of file storage, 5 tables and 30 days of logs, with no teammates. The Apache-2.0 code can also be self-hosted.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | 1,000 one-time credits, 1 workspace, 10 concurrent executions, 5 GB of file storage, 5 tables and 30-day log retention. |
| Pro | $21.25per user / month, billed annually ($255); $25 billed monthly | 6,000 credits a month plus 2,000 a week, 3 workspaces, teammates, 50 concurrent executions, 50 GB of storage and unlimited log retention. |
| Max | $85per user / month, billed annually ($1,020); $100 billed monthly | 25,000 credits a month plus 4,000 a week, 200 concurrent executions, 500 GB of storage, Sim Mailer, KB Live Sync, sandboxes and Slack Connect. |
| Enterprise | Custom | Custom credits and limits, with access control, SSO, SOC 2 compliance, self-hosting and dedicated support. |
Read from sim.ai on Oct 9, 2026. Prices change, so confirm with Sim before you buy.
Ways to pay less
- Annual discount15% off with annual billing
Sim's docs list annual billing at a 15% discount on all paid plans: Pro is $255 a year instead of $25 a month, and Max is $1,020 a year instead of $100 a month.
Stated on docs.sim.ai
Works with
Sim alternatives
- Sim vs n8n
Free plan · from €20/mo
- Sim vs Gumloop
Free trial · from $37/mo
- Sim vs Dify
Free plan · from $590/yr
- Sim vs Langflow
Free plan
- Sim vs Zapier
Free plan · from $19.99/mo
Common questions
Is Sim free?
Sim has a free plan. 1,000 one-time credits (1 credit is $0.005), 1 workspace, 5 GB of file storage, 5 tables and 30 days of logs, with no teammates. The Apache-2.0 code can also be self-hosted. Paid plans start at $21.25 per user / month, billed annually ($255); $25 billed monthly.
How much does Sim cost?
Sim lists 4 plans. Free: $0. Pro: $21.25 per user / month, billed annually ($255); $25 billed monthly. Max: $85 per user / month, billed annually ($1,020); $100 billed monthly. Enterprise: custom pricing. Prices were read from sim.ai on Oct 9, 2026.
What platforms does Sim work on?
Sim is available on Web and macOS.
Does Sim offer any discounts?
Sim publicly lists the following: 15% off with annual billing.
Does Sim have an Android app?
No Android app was listed when its pages were read on Oct 9, 2026. Sim is listed for Web and macOS.
Does Sim have an iPhone app?
No iPhone app was listed when its pages were read on Oct 9, 2026. Sim is listed for Web and macOS.
Is Sim open source?
Yes. Sim is open source, according to its own site. It can also be run on a server of your own.
Does Sim have an API?
Yes. Sim offers a public API, according to its own site.
What does Sim integrate with?
Sim's listing names Slack, GitHub, Gmail, Notion, Salesforce, Jira, Linear and HubSpot. A listing names up to eight integrations, so it may connect to more.
Who makes Sim?
Sim is made by Sim Studio, Inc.
What are the alternatives to Sim?
The closest alternatives to Sim in our directory are n8n, Gumloop, Dify, Langflow and Zapier. Each one has a side-by-side comparison with Sim.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Oct 9, 2026.