# Sim

> Open-source workspace for building and running AI agents

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.

- **Category:** AI Agents
- **Made by:** Sim Studio, Inc.
- **Website:** https://www.sim.ai
- **Runs on:** Web, macOS
- **Facts last checked:** Oct 9, 2026

## Pricing

Sim has a free plan. Paid plans start at $21.25 per user / month, billed annually ($255); $25 billed monthly.

- **Pricing model:** Free plan
- **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 | $21.25 per 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 | $85 per 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 https://www.sim.ai/pricing on Oct 9, 2026. Prices change, so confirm with Sim before buying.

## Ways to pay less

- **15% off with annual billing** (Annual discount): 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. Source: https://docs.sim.ai/platform/costs

## 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.

## 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.

## Works with

Slack, GitHub, Gmail, Notion, Salesforce, Jira, Linear, HubSpot

**Tags:** AI agents, Workflow automation, Open source, Self-hostable, Public API

## Alternatives

- [n8n](https://toolgpa.com/tools/n8n): Workflow automation and AI agents you can self-host. [Compare](https://toolgpa.com/compare/n8n-vs-sim)
- [Gumloop](https://toolgpa.com/tools/gumloop): AI agent builder for teams, with unlimited seats on shared credits. [Compare](https://toolgpa.com/compare/gumloop-vs-sim)
- [Dify](https://toolgpa.com/tools/dify): Open-source platform for building AI agents and agentic workflows. [Compare](https://toolgpa.com/compare/dify-vs-sim)
- [Langflow](https://toolgpa.com/tools/langflow): Open-source visual builder for AI agents and MCP servers. [Compare](https://toolgpa.com/compare/langflow-vs-sim)
- [Zapier](https://toolgpa.com/tools/zapier): Workflow automation across 9,000+ apps, with AI agents. [Compare](https://toolgpa.com/compare/sim-vs-zapier)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 9, 2026:

- https://www.sim.ai/
- https://www.sim.ai/pricing
- https://www.sim.ai/pricing?billing=annual
- https://docs.sim.ai/platform/costs
- https://docs.sim.ai/introduction
- https://docs.sim.ai/desktop
- https://www.sim.ai/terms
- https://github.com/simstudioai/sim

Page: https://toolgpa.com/tools/sim
Listed by ToolGPA (toolgpa.com).