Skip to content
Releases.

For cache diagnostics, a response to a request that sends the cache-diagnosis-2026-04-07 beta header now

BetaUnverifiedAdded Sep 25, 2026

For cache diagnostics, a response to a request that sends the cache-diagnosis-2026-04-07 beta header now always includes the diagnostics field. The field is null when the request did not include the diagnostics object. Previously the field was omitted in that case.

Anthropic's release notes

More Claude Platform releases

Every Claude Platform release
DateRelease
Sep 18Compliance API adds Claude in Chrome session transcripts in beta
Beta
Sep 22Claude Opus 5.5 launches with a 1M token context window and 128k output
GA
Sep 22Claude Opus 5.5 breaking changes: thinking can't be disabled, forced tool_choice removed
Update
Sep 22Fast mode research preview available for Claude Opus 5.5 on the Claude API
Preview
Sep 22Claude API beta lets tools be defined inside mid-conversation system messages
Beta
Sep 14Messages API adds on-demand conversation compaction in beta
Beta
Sep 14Claude API input_transformations adds thinking_mismatch_allowed entries in beta
Beta
Sep 23Cache diagnostics is out of beta on the Claude API and no longer requires the cache-diagnosis-2026-04-07 betaunverified
Beta

Also shipped on Sep 18, 2026

Anthropic in September 2026
DateRelease
Sep 18Databricks Apps telemetry is now generally available
DatabricksDatabricks AppsGA
Sep 18Lakebase Search is generally available
DatabricksLakebaseGA
Sep 18Apache Iceberg™ tables: Partition evolution (General availability)
SnowflakeSnowflakeGA
Sep 18xAI's Grok 4.6 is generally available
Google CloudGemini Enterprise Agent PlatformGA
Sep 18Gemini Enterprise: Support for new actions (Public Preview)
Google CloudGemini EnterprisePreview
Sep 18Agent Platform SDK for Python version 2.0.1 is available
Google CloudGemini Enterprise Agent PlatformDeprecation

Sources: each vendor's own release notes, changelogs and GitHub releases, read daily to monthly by how often it posts. Logos via logo.dev; trademarks belong to their owners.

New releases by email

Tuesday mornings: the week's data, AI and developer-tools releases, only in weeks when something shipped.

Double opt-in. Unsubscribe any time.