Releasesby GlyphFor cache diagnostics, a response to a request that sends the cache-diagnosis-2026-04-07 beta header now
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.
Also shipped Sep 18, 2026Anthropic in September 2026 →
Databricks Apps telemetry is now generally available
Configuring telemetry for your Databricks apps is now generally available. Databricks Apps telemetry collects traces, logs, and metrics and persists them to Unity Catalog tables using the OpenTelemetry (OTel) protocol.
Lakebase Search is generally available
Lakebase Search is now generally available. It brings scalable vector and keyword search to Lakebase projects through two Postgres extensions, so you can run semantic and exact-term search in a single database without a separate search stack: lakebase_vector adds the lakebase_ann index type for approximate nearest-neighbor vector search.
Apache Iceberg™ tables: Partition evolution (General availability)
With this release, we're pleased to announce the general availability of partition evolution for Snowflake-managed Iceberg tables. You can now change a table's partition specification after you create the table by adding, dropping, or replacing partition fields, without rewriting existing data.
xAI's Grok 4.6 is generally available
Grok 4.6 is now generally available (GA) and available for production use on the global endpoint and the US multi-region endpoint.
Gemini Enterprise: Support for new actions (Public Preview)
Support for new actions is available in Public Preview for the following data stores: Microsoft OneDrive : Copy folder, move file, move folder, rename file, rename folder, share file or folder, and update file properties. Microsoft Outlook : Create calendar, RSVP to event, and update calendar.
Agent Platform SDK for Python version 2.0.1 is available
Version 2.0.1 of the Agent Platform SDK for Python ( google-cloud-agentplatform ) is now available. This release migrates generative AI modules to the Google Gen AI SDK, decouples the agent surface from google-cloud-aiplatform into a dedicated package, and introduces restructured namespaces.
More from Claude PlatformEvery Claude Platform release →
Compliance API adds Claude in Chrome session transcripts in beta
Compliance API local session endpoints now return transcripts of Claude in Chrome sessions (product_surface claude_in_chrome) for Claude Enterprise organizations, using the existing Compliance Access Key and read:compliance_user_data scope.
Claude Opus 5.5 launches with a 1M token context window and 128k output
Anthropic released Claude Opus 5.5 for long-running agentic coding and knowledge work, with a default 1M token context, 128k max output and always-on adaptive thinking. It costs $4 / $20 per MTok, below Claude Opus 5, and is on the Claude API, Bedrock, Google Cloud and Microsoft Foundry.
Claude Opus 5.5 breaking changes: thinking can't be disabled, forced tool_choice removed
On Claude Opus 5.5, disabling or manually enabling thinking returns a 400; control depth with the effort parameter instead. tool_choice any and tool also return 400, so use auto with strict tool use, and computer use requires the computer_toolset_20260801 toolset.
Fast mode research preview available for Claude Opus 5.5 on the Claude API
Fast mode, in research preview, can now be used with Claude Opus 5.5 on the Claude API.
Claude API beta lets tools be defined inside mid-conversation system messages
With the inline-tools-2026-09-15 beta header, a tool_addition block can carry a full tool definition, so agents can add tools, change schemas or upgrade server tools mid-conversation without invalidating the prompt cache. The same header covers adding and removing tools by reference.
Claude Opus 5.5 launch
Claude Opus 5.5 is the first model in the Claude 5.5 family. It performs at the level of Claude Fable 5.1 while costing 40% less than Opus 5.
Messages API adds on-demand conversation compaction in beta
With the compact-2026-09-04 beta header, the top-level compaction parameter returns a signed compaction block summarizing prior messages, which you send in their place on later requests. You choose when to compact, it can run in the background, and recent turns can be kept verbatim.
Claude API input_transformations adds thinking_mismatch_allowed entries in beta
Under the thinking-binding-controls-2026-08-01 beta header, input_transformations can report thinking_mismatch_allowed for thinking blocks that failed an unenforced prefix check. Logging these entries helps find conversation history edits in production traffic.