Browser Use open-sources rl-env-use: one-line RL environments for any domain

inductionheads · x · 2026-10-21

Browser Use released and open-sourced rl-env-use: describe a skill in one line and get a verified RL environment built from real web-mined cases that frontier models don't saturate, plus a hillclimbed prompt for the model you train. It builds on Anthropic's automating eval design and hillclimbing workflow, with tasks mined from the web by Browser Use agents. Benchmarks: on 8 clinical-trial-result missions Claude Code verified 0 of 86 facts while Browser Use verified 17 with 4 complete cases; on human genetic variants (UniProt, gnomAD, GTEx) it's 6 of 82 vs 40 verified.

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