Claude Sonnet 5.5
ModelA faster, lower-cost Claude 5.5 model for coding, everyday tasks, and polished professional artifacts.
- Sep 28, 2026
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Releases
Sep 28, 2026Claude Sonnet 5.5 releasedModel release
Anthropic released Claude Sonnet 5.5 as a faster, lower-cost upgrade to Sonnet 5 for everyday tasks, coding, and document work.