Claude API 5.5
Anthropic · Model / API · We've launched Claude Opus 5.5 (claude-opus-5-5), a model for long-running agentic coding and knowledge… · Released
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Source: Anthropic's official Claude API release notes at docs.claude.com. Text reproduced from the source for reference; all rights belong to Anthropic. Patchwire is not affiliated with Anthropic.
More Claude API releases
- You can now let a Claude Managed Agents agent use dynamic workflows, in beta with the… · Oct 9, 2026
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- We've lowered the price of prompt cache reads on Claude Sonnet 5.5 from $0.20 USD to… · Oct 7, 2026
- We've added capabilities.server_tools to the Models API. GET /v1/models and GET… · Oct 6, 2026
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- We've added a line field to the Models API. GET /v1/models and GET… · Oct 1, 2026
- In Python SDK 1.10.0, TypeScript SDK 0.130.0, C# SDK 12.52.0, Go SDK 1.77.0, Java SDK… · Sep 30, 2026
- We've launched Claude Sonnet 5.5 (claude-sonnet-5-5). It's available on the Claude… · Sep 28, 2026