GPT-5.5 Instant (May 2026)
OpenAI · 1 configuration
Intelligence22.7
Input / 1M$5.00
Output / 1M$30.00
Context400K
Tariff: OpenAI · Source: artificial-analysis · USD per million tokens
Thinking configuration
What does more thinking buy you?
Compare this model’s measured thinking configurations.
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Efficient frontier: best measured score at each cost1 measured configurations · 0 without both values
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Intelligence IndexArtificial Analysis composite index, not a percentage. Different versions of the index are not directly comparable.
22.7 pointsGPQA DiamondGraduate-level scientific questions. Measures specialist reasoning rather than web-search quality.
84.6 %Humanity’s Last ExamDifficult questions across many disciplines, compared under the same evaluation setup.
21.6 %τ²-BenchTool use and interaction in assistance scenarios. Does not replace an evaluation of your integration.
49.4 %IFBenchVerifiable instruction following. A proxy for precision rather than a benchmark of creative style.
71.5 %Omniscience accuracyFactual accuracy in Artificial Analysis's Omniscience evaluation.
46.3 %Specifications from the catalog
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Tool callingNot available
Structured outputNot available
SpeedNot available
First tokenNot available
Maximum output—
Catalog listing dateNot available