Sim
Sim is a YC Spring 2025 (P25) company. Based in San Francisco, CA, USA. Team of 5.
About Sim
Summary
Sim builds an open-source AI workspace that lets development teams design, deploy, and govern AI agent workflows. Teams connect to over a thousand integrations and any major LLM, then build agents visually, through chat, or in code. Sim replaces ad-hoc agent tooling and scattered oversight by centralizing control over access, spend, data, and deployment in one platform.
Business model
A free self-serve tier plus paid enterprise plans with centralized workspace controls
Go-to-market
Developer and enterprise teams at companies like Rivian and eXp Realty adopt Sim through self-serve GitHub access, with an enterprise sales motion for organizations that need governance and deployment controls.
From the Y Combinator listing
Open source platform to visually build agents
Sim enables fast-growing dev teams to build and deploy AI agent workflows. 65,000+ developers are already using Sim, integrating with 500+ apps to streamline workflows with AI agents.
Facts
- B2B / B2B
- San Francisco, CA, USA
- 5
- Active
- Early
Founders (2)
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