OpenAI
GPT-5 Nano 2025 08 07 Minimal
Released 2025-08-07 · Data snapshot 2026-10-26
Overall score
31.7
Awaiting benchmarks (insufficient coverage)Benchmark coverage
15.4%
4 third-party benchmarks
Context window
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tokens
Input price
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per million tokens
Output price
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per million tokens
Dimension performance
Reasoning
31.7
Above averageBelow averageAnchored at 50 (reference models’ average); every 15 points ≈ one standard deviation
Benchmark details
Reasoning3 items
Mystery Game Puzzles5
Chess Puzzles2
FrontierMath (Tiers 1-3)1.8
Knowledge1 items
GPQA Diamond48.5
Multiple reasoning tiers of the same benchmark take the best value; raw scores have different scales and are not comparable across benchmarks.