ClawCodex Scores 80.9% on Terminal-Bench 2.1 on Claude Opus 5
Running headless on Claude Opus 5, ClawCodex passed 72 of the 89 Terminal-Bench 2.1 tasks — 80.9% on a single run. On the public leaderboard that would slot around third, ahead of Claude Code on Opus 4.8. Here's the run, the methodology, and an honest accounting of the caveats and the failures.
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