Proximal

RL environment · Coding

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Proximal
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Open environment ↗proximal.ai

About Proximal

Proximal is a San Francisco-based (with a Bangalore presence) research lab for coding data, building high-fidelity, long-horizon reinforcement learning environments grounded in real codebases to train and evaluate frontier coding agents. It emphasizes scalable, software-driven data engines over human contractors, and research into reward-hacking detection and 'fuzzy verifiers' that score code quality beyond functional correctness.

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Next: browse all environments. Entry from the RL Research daily scrape of public sources, 2026-09-21 snapshot.