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Anthropic

Is Claude Sonnet 4.6 out? Yes, since February 17, 2026

Yes. Claude Sonnet 4.6 was released on February 17, 2026.

A browser notification for each confirmed release in this family. No account or email.

Have you used it? Claude Sonnet 4.6

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Lab
Anthropic
Family
Claude
Release date
Source
Anthropic · Claude Sonnet 4.6

What changed

  • context 1M tokens · Context window of Claude Sonnet 4.6. Claude Opus 4.6 is the previous model of the same tier, but the gap is beyond what a percentage explains.
  • price -40 % · Prompt price compared with Claude Opus 4.6, same tier in this family. Went from $5.00 / MTok to $3.00 / MTok. Lower is better.

About 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...

Next Claude model to watch

Questions

When was Claude Sonnet 4.6 released?
Claude Sonnet 4.6 was released on February 17, 2026.
Who makes Claude Sonnet 4.6?
Claude Sonnet 4.6 is made by Anthropic.
What comes after Claude Sonnet 4.6?
Claude Opus 4.7, released on April 16, 2026.