Claude Opus 5.5
Anthropic · 5 thinking configurations
Intelligence56.0
Input / 1M$4.00
Output / 1M$20.00
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 cost5 measured configurations · 0 without both values
Selected: thinking xhigh · Click a point to switch configuration
Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. It is particularly strong at multi-step changes in large codebases, code...
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.
57.5 %SciCodeCode generation for scientific research problems.
65.0 %MMMU-ProMultimodal understanding of academic problems that include images.
86.6 %Omniscience accuracyFactual accuracy in Artificial Analysis's Omniscience evaluation.
65.4 %Specifications from the catalog
Inputtext, image, file
Outputtext
Tool callingYes
Structured outputYes
Speed79.5 tok/s
First token133.65 s
Maximum output128K
Catalog listing date2026-09-22