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How a GPT-5.4 harness scored above GPT-6 Astra and Claude Code on ExtractBench

On LlamaIndex ExtractBench (370 documents, 4,869 pages), my open-source harness KYNEX scores 92.97 F1 . It is ranked 12th of 53 systems on the leaderboard, and the result was independently re-run and verified by the LlamaIndex team . It runs on GPT-5.4 . On the same leaderboard: System F1 LlamaExtr…

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  1. 2026-11-04 10:18 · DEV Community — AI
    How a GPT-5.4 harness scored above GPT-6 Astra and Claude Code on ExtractBench

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