Anthropic

Claude Opus 5.5

Claude model for long-running agentic coding and knowledge work

Intelligence
59.1
AA Index
Output price
$20/1M
In $4/1M
Context
1000k
tokens
Speed
95
tokens/sec

Performance

Domain intelligence profile

Artificial Analysis Intelligence Index by domain (0–100).

Strengths by domain

Engineering65.3
Strategy & Ops61.4
Economics60.3
Finance59.4
Legal58.0
Healthcare57.9

Specifications

Provider
Anthropic
Family
claude-opus
Released
2026-09-22
Knowledge cutoff
2026-06
Context window
1,000,000 tokens
Max output
128,000 tokens
Input price
$4/1M
Output price
$20/1M
Cache read
$0.2/1M
Input modalities
text
image
pdf
Output modalities
text
Capabilities
Reasoning · Tool calling · Structured output · File attachments

Specs from models.dev · benchmarks from Artificial Analysis.

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Elmo logo
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CoAnimator logo
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Recall logo
Recall
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