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Claude SDKs stop sending beta headers for Files and Skills clients

UpdateVerifiedAdded Sep 22, 2026

Python 1.2.0, TypeScript 0.122.0, Go 1.68.0, Java 2.59.0, Ruby 1.67.0 and C# 12.44.0 make client.beta.files and client.beta.skills match the GA shapes. client.beta.skills.delete() now removes all versions, and BetaSkill is renamed BetaContainerSkill.

Topics: Developer tools

Anthropic's release notes

Summaries of vendors' own notes. Product names and logos belong to their owners; logos via logo.dev.

More Claude Platform releases

Every Claude Platform release
DateRelease
Aug 27Claude Console adds personal and service account API keys
Update
Aug 26Compliance API adds Claude Science and Microsoft 365 session transcripts in beta
Beta
Aug 26Admin API comes to the ant CLI and Claude SDKs under client.beta.organization
Beta
Sep 1Claude Fable 5.1 launches alongside Claude Mythos 5.1 with 1M token context
GA
Sep 1Prompt cache reads on Claude Fable 5.1 and Mythos 5.1 drop to $0.25 per MTok
Pricing
Sep 1Claude Fable 5.1 and Mythos 5.1 reject tool_choice any and tool
Update
Sep 1Claude Fable 5.1 thinking blocks only replay to the same or newer models
Update
Sep 1Per-message effort changes enter beta on the Claude API
Beta

Also shipped on Aug 27, 2026

Anthropic in August 2026
DateRelease
Aug 27You can now train models using XGBoost version 2.1 by using the XGBOOST_VERSION option
Google CloudBigQueryGA
Aug 27CoCo in the Snowflake Extension for Visual Studio Code (General availability)
SnowflakeCortex CodeGA
Aug 27Lakeflow Designer August Release
DatabricksLakeflowPreview
Aug 27Genie Code is now available as a Lakeflow Jobs task (Beta)
DatabricksAI/BI and GenieBeta
Aug 27Genie Code for AI Runtime (Public Preview)
DatabricksAI/BI and GeniePreview
Aug 27Share foreign Delta tables with OpenSharing (Public Preview)
DatabricksUnity CatalogPreview

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