Claude API Release Notes
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Printed in News · the maker's own voice · platform.claude.com
Publishes about 4 a week · last piece Oct 15, 2026
How often
about 4 a week, by the archive: 18 pieces since Sep 18, 2026.
12 weeks agothis week
Latest pieces
- Instructions for Claude
- We've launched OpenTelemetry export in beta, so you can trace Messages API requests and Claude Managed Agents sessions in your…
- You can now let a Claude Managed Agents agent use dynamic workflows, in beta with the managed-agents-2026-04-01 beta header.
- The Compliance API chat endpoints now also return chats from the unified Claude experience, in beta for Claude Enterprise organizations,…
- In Claude Managed Agents, a cloud environment with limited networking now also applies its allowed_hosts to the web_search and web_fetch…
- Claude Max and Team plans now include monthly API credits.
- The Python and TypeScript SDKs now include classes, in beta, for the browser use tool and the computer use tool.
- Claude Haiku 5.5
- Claude Haiku 5.5
- We've added capabilities.server_tools to the Models API.
- We've added capabilities.thinking.types.disabled to the Models API.
- We've added a line field to the Models API.
- In Python SDK 1.10.0, TypeScript SDK 0.130.0, C# SDK 12.52.0, Go SDK 1.77.0, Java SDK 2.67.0, PHP SDK 0.53.0, Ruby SDK 1.75.0, and version…
- Claude Sonnet 5.5
- We're resuming billing for refusals that arrive before any output when stop_details.category is "bio", "frontier_llm", or…
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