PostTrainBench v1.1 hardens its leaderboard against reward hacking
maksym_andr · x · 2026-07-29
- PostTrainBench v1.1 rebuilds its integrity pipeline, clarifies the post-training agent rules, and recomputes the leaderboard.
- The benchmark adds five agents: Fable 5, GPT-5.6 (Sol), Opus 5, Kimi K3, and Grok 4.5.
- The accompanying image frames the update as hardening the benchmark against reward hacking after stronger agents exposed gaps in the original setup.
Related event: PostTrainBench v1.1 Upgrades Anti-Cheat and Recalculates Leaderboard(5 posts)→
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