Overview
A product upgrade to Opus 4 for coding and agent tasks, released through Claude, the API, and cloud partners.
Claude Opus 4.1
A product upgrade to Opus 4 for coding and agent tasks, released through Claude, the API, and cloud partners.
MODEL NUMBER298
- First public date
- 2025-08-05
- Organization
- Anthropic
- Family
- Claude
01
Specifications
Only published specifications are shown.
- Output modalities
- Text
- Open weights
- No
- Status
- Legacy
02
Overview
PreviousClaude Opus 4— · 200K ctx
CurrentClaude Opus 4.1— · — ctx
04
Architecture & capabilities
Model capabilities
CodingReasoning
05
Release history
Claude Opus 4.1 launched.
View source06
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07
Sources
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