BrowserBench.

An environment for browser infrastructure stealth. Tooling / infrastructure rather than a capability leaderboard — it is not scored for discriminative power.

measures infra reliability, not model capability

Need one that still separates models?

When the public environment for your capability saturates, you can’t tell your models apart and you can’t train past it. We build private, contamination-resistant, verifiable-reward environments and evals on a hold-out set — designed to discriminate where the public ones no longer do.