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Anthropic releases Claude Opus 4.1 with improved coding capabilities

Published 05/08/2025, 17:56
Anthropic releases Claude Opus 4.1 with improved coding capabilities

Investing.com -- Anthropic has released Claude Opus 4.1, an upgrade to its Claude Opus 4 model with enhanced capabilities in coding, reasoning, and agentic tasks.

The new model is now available to paid Claude users and in Claude Code, as well as through Anthropic’s API, Amazon (NASDAQ:AMZN) Bedrock, and Google (NASDAQ:GOOGL) Cloud’s Vertex (NASDAQ:VRTX) AI. Pricing remains unchanged from the previous Opus 4 version.

Claude Opus 4.1 achieves 74.5% performance on SWE-bench Verified, representing a significant advancement in coding capabilities. The model also shows improvements in research and data analysis skills, with particular enhancements in detail tracking and agentic search.

GitHub reports that the new model demonstrates improvements across most capabilities compared to Opus 4, with notable gains in multi-file code refactoring. Rakuten Group has found that Opus 4.1 excels at identifying precise corrections within large codebases without making unnecessary changes or introducing bugs.

Windsurf indicates that Opus 4.1 delivers a one standard deviation improvement over Opus 4 on their junior developer benchmark, showing a performance leap comparable to the improvement from Sonnet 3.7 to Sonnet 4.

Anthropic recommends that all users upgrade from Opus 4 to Opus 4.1. Developers can access the new model via the API using claude-opus-4-1-20250805.

The company stated it plans to release "substantially larger improvements" to its models in the coming weeks.

This article was generated with the support of AI and reviewed by an editor. For more information see our T&C.

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