Claude Sonnet 4.6: Enhanced Coding Experience with Advanced Developer Tools

Anthropic Unveils Claude Sonnet 4.6, Enhancing AI Coding Capabilities and Developer Tools

Anthropic has released Claude Sonnet 4.6, the company’s second major AI launch in under two weeks. This latest iteration of the Sonnet model boasts improved coding skills, enabling more users to tackle tasks that previously required an Opus-class model, including complex office work. The new model also demonstrates enhanced computer use capabilities compared to its predecessors.

Key Improvements and Enhancements

Early adopters have reported significant performance gains, with frontend development and financial analysis emerging as key areas of improvement.

Claude Developer Platform Updates

The Claude Developer Platform has also been updated to support adaptive and extended thinking modes in this release. Additionally, context compaction, currently in beta, condenses older conversation history as sessions approach token limits, expanding usable context. The API has been enhanced to generate and run code that sorts and refines search results, retaining only relevant information in the working context. This process improves response quality and reduces unnecessary token usage.

Additional Features and Availability

Code execution, memory, programmatic tool calling, tool search, and tool use examples are now generally available. Anthropic has conducted extensive safety evaluations of Sonnet 4.6, which indicate that the model is as safe as, or safer than, its recent predecessors.

Claude Sonnet 4.6 is now the default model for users on the Free and Pro plans in claude.ai and Claude Cowork. Pricing for these plans, including Sonnet API usage, remains unchanged. This release marks a significant milestone in Anthropic’s efforts to enhance the capabilities of its AI models and provide developers with more powerful tools to drive innovation.

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