Sim, an open-source platform for building and deploying AI agents, has raised a $7M Series A funding round led by Standard Capital. The investment, which includes participation from Perplexity Fund, SV Angel, and YCombinator, signals a significant bet on the company’s visual, canvas-based approach to creating what it calls “agentic workflows.”
The company is carving out a niche in the increasingly crowded market for AI development tools. According to Sim, developers are often caught between two extremes: complex, code-intensive SDKs that offer power but demand significant engineering overhead, and simple no-code platforms that are easy to start with but quickly become restrictive. Sim aims to be the happy medium, a powerful, flexible AI workflow builder that remains accessible through a visual interface.
Founded earlier this year by Waleed Latif and Emir Karabeg, Sim was born from the idea of rebuilding an entire sales and marketing operation using only visual building blocks. That experiment formed the foundation of the platform, which allows users to design complex processes by connecting agents, tools, and logic blocks on a drag-and-drop canvas. This approach is designed to let teams move from prototyping to production-scale multi-agent systems without hitting a wall.
The platform also includes a “Copilot” feature that can generate nodes and fix errors from natural language prompts, further lowering the barrier to entry for building sophisticated AI applications.
Developer Traction and the Agentic Future
Sim’s commitment to being open-source from day one appears to be paying off. The project has exploded in popularity, growing from a two-person operation in a San Francisco apartment to a platform with over 18,000 GitHub stars, 60,000 developers, and more than 100 companies using it in production. The company reports it has already processed over 10 million workflows.
