Anthropic Released February 17, 2026 Synced Mar 10, 2026

Anthropic: Claude Sonnet 4.6

Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with memory, polished document creation, and confident computer use for web QA and workflow automation.

Tool useVisionReasoning

Why it stands out

Offers a 1000K-token context window, enabling full-document and multi-file analysis without chunking.

Combines tool use with reasoning — a strong baseline for agentic and multi-step workflows.

Multimodal input (vision) extends it beyond text-only workflows.

What to watch

No benchmark score currently tracked — evaluate using task-specific testing alongside pricing and capability data.

Release timeline

Tracked events for Anthropic: Claude Sonnet 4.6.

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release

Anthropic: Claude Sonnet 4.6 entered the tracked catalog

February 17, 2026

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Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon comp

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Recent changes

LaunchFeb 17

Anthropic launched Anthropic: Claude Sonnet 4.6

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