Anthropic releases Claude Sonnet 5.5
Anthropic launched Claude Sonnet 5.5 (claude-sonnet-5-5) on the Claude API, Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry. Context window, output limits, and prices are on its model page.
Models: Claude Sonnet 5.5
Source: Claude Developer Platform release notes, checked Sep 29, 2026. Summarized from the provider’s announcement.