Claude Sonnet 5.5
Anthropic · 5 thinking configurations
Intelligence56.0
Input / 1M$2.00
Output / 1M$10.00
Context1M
Tariff: Anthropic · 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 cost4 measured configurations · 1 without both values
Selected: thinking max · Click a point to switch configuration
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...
Intelligence IndexArtificial Analysis composite index, not a percentage. Different versions of the index are not directly comparable.
56.0 pointsHumanity’s Last ExamDifficult questions across many disciplines, compared under the same evaluation setup.
55.0 %SciCodeCode generation for scientific research problems.
61.0 %Omniscience accuracyFactual accuracy in Artificial Analysis's Omniscience evaluation.
53.9 %Specifications from the catalog
Inputtext, image, file
Outputtext
Tool callingYes
Structured outputYes
Speed137.6 tok/s
First token407.24 s
Maximum output128K
Catalog listing date2026-09-28