Claude Opus 4.1
by Anthropic
Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified
Models
Claude Opus 4.1
Added 10 July 2026
Overview
Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains...
How to use / API access
Call via OpenRouter with model id `anthropic/claude-opus-4.1`.
- openrouter ·
anthropic/claude-opus-4.1Docs
OpenRouter id: anthropic/claude-opus-4.1
Benchmarks
- Intelligence Index (artificial-analysis): 22.8 index
- Design Arena 3d (other): 1154 elo · #66
- Design Arena asciiart (other): 1170 elo · #30
- Design Arena codecategories (other): 1173 elo · #69
- Design Arena dataviz (other): 1166 elo · #72
Notes
Claude Opus 4.1 is listed in the EDNA Models directory from the OpenRouter catalogue.
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