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GPT-5.1-Codex

67±0

66interval68

openaiOct 2026swing #52–#375

GPT-5.1-Codex-Mini

61±0

60interval62

openaiOct 2026swing #54–#425

Overall ×1WebDev Arena ×1Vision Arena ×1Factuality Arena ×1Search Arena ×1Document Arena ×1Agent Arena ×1GPQA Diamond ×1AIME (math) ×1FrontierMath ×1SimpleQA Verified ×1ARC-AGI-2 ×1Humanity's Last Exam ×1SimpleBench ×1LiveBench ×1BFCL v4 (function calling) ×1dormantSWE-bench Verified (live board) ×1Terminal-Bench 4.0 ×1MMLU-Pro (Artificial Analysis) ×1LiveCodeBench (Artificial Analysis) ×1IFBench (Artificial Analysis) ×1HHEM Hallucination (Vectara) ×12 of 1034 models
ModelOrgIntervalSwingiiiiiiiiiiiiiiiiiiiiiiAdd to compare
56GPT-5.1-CodexopenaiOct 2026$1.25 / $1067.1 77.4Ranked 67.1 = (5 × 77.4 + 3 × 50) ÷ 8. 77.4 is the mean percentile over the 5 of 22 selected axes this model is measured on; fewer axes means a stronger pull toward 50.66–68755/22#52–375—21————————————95———949582—
129GPT-5.1-Codex-MiniopenaiOct 2026$0.25 / $260.9 67.4Ranked 60.9 = (5 × 67.4 + 3 × 50) ÷ 8. 67.4 is the mean percentile over the 5 of 22 selected axes this model is measured on; fewer axes means a stronger pull toward 50.60–62825/22#54–425—12————————————74———799479—

Blend is coverage-shrunk; the raw composite is shown greyed beside it · A low badge means fewer than 3 boards scored this model

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