Anthropic has officially rolled out Claude Opus 4.1, its most advanced AI model yet, bringing dramatic improvements in coding performance, agentic reasoning, and developer tooling. Already accessible to paid Claude users and API developers, this powerful upgrade is positioned to significantly enhance productivity across software engineering workflows.
This latest iteration of the Claude Opus series builds on the success of Opus 4, boasting a 74.5% performance rate on SWE-bench Verified—a benchmark designed to evaluate software engineering tasks. That’s not just a minor upgrade—it’s a leap that places Claude Opus 4.1 among the top AI tools for structured code manipulation and multi-file code refactoring.
Hailed as a breakthrough by early adopters, Claude Opus 4.1 is now available through Anthropic’s API, Claude Code, Amazon Bedrock, and Google Cloud Vertex AI, all at the same pricing as Opus 4. The company recommends users swiftly transition, as the older model will be deprecated in just 15 days.
What makes Claude Opus 4.1 a game-changer for developers?
Claude Opus 4.1 introduces several engineering-first features that sharpen its edge in complex coding environments. From improved tracking of logical sequences to context-aware multi-step reasoning, the model now functions with a level of granularity and focus closer to a mid-level developer than a traditional AI assistant.
Some key performance enhancements include:
Refined multi-file code refactoring capabilities
Reduced hallucination rates in logic-based coding tasks
Greater precision when identifying bug fixes across massive codebases
Rakuten Group’s internal assessments show that Opus 4.1 excels at identifying minimal and accurate corrections without generating additional bugs—a major advantage for software teams working on legacy systems or high-volume applications.
Additionally, Windsurf’s junior developer benchmark reports that Claude Opus 4.1 achieves a full one standard deviation improvement over its predecessor, signaling tangible productivity gains in practical use cases.
How can developers access Claude Opus 4.1 on GitHub Copilot?
In a move sure to excite developers, Claude Opus 4.1 is now integrated into GitHub Copilot, available to users on Copilot Enterprise and Pro+ plans. This integration is available through GitHub.com, Visual Studio Code, and GitHub Mobile under the model picker.
Notably, Opus 4.1 will initially appear in “ask mode” only within Visual Studio Code. This allows devs to make more directed inquiries or requests—perfect for toolchain integration or advanced pair programming. To activate the model, Copilot administrators must enable a new policy setting in the platform’s configuration panel. Once live, the Opus 4.1 model will show up in the model selector.
GitHub will phase out support for Claude Opus 4 in about two weeks, further underlining Anthropic’s push for users to adopt the upgraded version.
What’s next for Anthropic and Claude AI?
Anthropic isn’t stopping here. The company announced that “substantially larger improvements” are already in development and expected in the coming weeks. This roadmap signals Anthropic’s ambition to lead the next generation of intelligent AI agents—tools that don’t just autocomplete code but can reason through entire workflows.
Developers using the Claude API can already access the latest version by specifying the model ID: claude-opus-4-1-20250805.
Claude Opus 4.1 isn’t just another update—it’s a strategic step toward a future where AI deeply integrates with human development practices. With improved performance, seamless GitHub integration, and a clear upgrade path, Opus 4.1 is set to redefine the developer experience.
You Must Know:
What is Claude Opus 4.1?
Claude Opus 4.1 is the latest AI model from Anthropic, designed for high-performance coding, logical reasoning, and agentic workflows. It significantly improves on the Opus 4 version in accuracy and usability.
How does Claude Opus 4.1 perform in real coding environments?
It achieves a 74.5% score on SWE-bench Verified and demonstrates excellent multi-file refactoring capabilities. It also shows improved logic tracking and minimal bug introduction in live testing.
Can I use Claude Opus 4.1 with GitHub Copilot?
Yes, it’s now integrated with GitHub Copilot for Enterprise and Pro+ users. It can be accessed in GitHub Chat, VS Code (ask mode), and GitHub Mobile.
Is Claude Opus 4 still available?
Yes, but it will be deprecated in 15 days. Users are encouraged to upgrade to Claude Opus 4.1 for full feature access and support.
What are Anthropic’s plans after Opus 4.1?
Anthropic has stated they will soon launch major upgrades to their models, indicating continuous innovation in AI tools for developers.
How do I access Claude Opus 4.1 via API?
Use model ID claude-opus-4-1-20250805 via Anthropic’s API or supported platforms like Amazon Bedrock and Google Vertex AI.
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