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OpenAI

GPT-5.5 Instant

Released 2026-05-05 · Data snapshot 2026-10-22

Overall score

67.1

Awaiting benchmarks (insufficient coverage)
Benchmark coverage
13.6%
3 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

Human preference67.1
Above averageBelow averageAnchored at 50 (reference models’ average); every 15 points ≈ one standard deviation

Benchmark details

Reasoning1 items
FrontierMath (Tiers 1-3)26.3
Knowledge1 items
GPQA Diamond82.5
Human preference1 items
LMArena Human Blind Vote1473.0099

Multiple reasoning tiers of the same benchmark take the best value; raw scores have different scales and are not comparable across benchmarks.

Score trend

2026-10-202026-10-22
View daily data
2026-10-2267.1
2026-10-2150.1
2026-10-2050.2
Scores and prices come from third-party public data (Artificial Analysis / LMArena / OpenRouter). 50 is the reference models’ average; every 15 points ≈ one standard deviation. Prices are converted at snapshot-day rates and provided for reference only. Return to LLM Leaderboard.