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Claude Opus 4.1

Name: Claude Opus 4.1
Author: Anthropic

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

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Models

Claude Opus 4.1

Added 10 July 2026

#anthropic

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-4.1 Docs

OpenRouter id: anthropic/claude-opus-4.1

Benchmarks

Design Arena 3d (other) : 1226 elo · #37
Design Arena asciiart (other) : 1211 elo · #18
Design Arena codecategories (other) : 1214 elo · #41
Design Arena dataviz (other) : 1207 elo · #45

Notes

Claude Opus 4.1 is listed in the EDNA Models directory from the OpenRouter catalogue.

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