Zero-cost frontier AI models for coding
In exchange, we use your conversations to train better coding models.

The project
A community effort to make the first open coding model that learns in real time. We provide free, unlimited access to frontier coding models. In return, we use your conversations to train better models.
Existing benchmarks don’t capture real developer workflows. We’re fixing that by gathering authentic vibecoding sessions at scale: real prompts, real iterations, real projects.
We are a collaboration led by researchers and engineers from UC Berkeley, Texas A&M, Northeastern University, University of Washington, and Stanford.
How it works
Code with free models
Connect via OpenRouter to access frontier models at no cost.
Sessions get collected
Your prompts and model outputs are recorded, redacted, and used for training.
Data powers new models
Your sessions help us train better coding models for everyone.