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Claude Sonnet 4.6 Timeline - Announcements & Release History | AI Stats

Claude Sonnet 4.6

Claude Sonnet 4.6

Claude Sonnet 4.6

Anthropic

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Model Timeline

17 Feb 2026

Model Released

Model first made available to the public

17 Feb 2026

Model Announced

Model first introduced to the public

29 Sept 2025

Claude Sonnet 4.5

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