Anthropic Releases Claude Sonnet 4.6: Enhanced Coding and Computer Use

On February 17, 2026, Anthropic officially released Claude Sonnet 4.6, the latest iteration of its efficient, high-performance model family. Designed to complement the flagship Opus line, Sonnet 4.6 offers a balance of speed, cost-effectiveness, and advanced reasoning capabilities, positioning it as the reliable choice for daily enterprise tasks.

Enhanced Agentic Capabilities

A primary focus of this release is improving the model's ability to interact with digital interfaces. While retaining the core Computer Use functionality introduced in previous versions, Sonnet 4.6 demonstrates significantly improved stability and reliability when navigating complex software environments.

• Reduced Error Rate: The updated model is less prone to "drifting" or missing interface elements during extended multi-step workflows, making it more dependable for automating repetitive business processes and browser-based tasks.
• Complex Workflows: Early tests indicate the model is better equipped to handle intricate enterprise applications without requiring specialized API integrations.

Coding and Instruction Following

Sonnet 4.6 delivers noticeable improvements in programming tasks compared to its predecessors.

• Code Reliability: The model shows enhanced precision in code generation and debugging, with a stronger ability to follow complex, multi-part instructions without omitting steps.
• Cost-Effective Performance: While the Opus series remains the choice for the most abstract and difficult research challenges, Sonnet 4.6 is positioned as the optimal tool for high-volume coding and development workflows due to its faster inference speed and lower cost profile.

Performance and Context

The release emphasizes efficiency. Sonnet 4.6 is engineered to process information faster than the heavyweight Opus models, making it suitable for real-time applications. Crucially, it supports a context window of up to 1 million tokens, allowing for the single-pass analysis of extensive codebases, legal contracts, or large datasets without losing coherence.

Availability

Claude Sonnet 4.6 is available to developers via the Anthropic API and Amazon Bedrock. It has also been deployed as the default model for both Free and Pro users on the Claude.ai web interface and mobile apps, replacing the previous version for general interactions.