Calvin Chen
Co-founder
Proximal
Research lab building data and environments for coding agents
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About
Proximal is a research and engineering lab focused on training data and reinforcement-learning environments for autonomous coding agents. It builds synthetic data pipelines, long-horizon coding benchmarks such as FrontierSWE, and infrastructure for large-scale agent runs. Backed by General Catalyst; team includes co-founders Calvin Chen and Justus Mattern.
- Website
- proximal.ai
- Stage
- seed
- Location
- San Francisco, CA, USA
- Added via
- web
- Ownership
- unclaimed
Where to go
Products
- FrontierSWE — Ultra-long-horizon coding benchmark for frontier agents
Founders
Justus Mattern
Co-founder