GPT-5.5 Instant (June 2026)
OpenAI · 1 configuration
Intelligence26.0
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.
Scroll the chart ↔ · tap a point for details
Efficient frontier: best measured score at each cost1 measured configurations · 0 without both values
Selected: thinking thinking · Click a point to switch configuration
Intelligence IndexArtificial Analysis composite index, not a percentage. Different versions of the index are not directly comparable.
26.0 pointsGPQA DiamondGraduate-level scientific questions. Measures specialist reasoning rather than web-search quality.
82.3 %Humanity’s Last ExamDifficult questions across many disciplines, compared under the same evaluation setup.
19.9 %SciCodeCode generation for scientific research problems.
52.5 %Terminal-Bench 2.1Agent tasks in a terminal environment. Results also depend on the evaluation harness.
34.8 %Omniscience accuracyFactual accuracy in Artificial Analysis's Omniscience evaluation.
44.4 %Specifications from the catalog
Inputtext
Outputtext
Tool callingNot available
Structured outputNot available
Speed111.6 tok/s
First token1.03 s
Maximum output—
Catalog listing dateNot available