Releasesby IbisThe new SDK and CLI versions also have breaking changes that don't depend on the API version, and they are
Update3 days agoUnverifiedAdded Oct 22, 2026
The new SDK and CLI versions also have breaking changes that don't depend on the API version, and they are licensed under Apache 2.0 instead of the MIT License. See SDK and CLI changes.
Topics: Developer tools
More Claude Platform releases
Every Claude Platform releaseWe've released API version 2026-10-21
We've released API version 2026-10-21. Migrating to API version 2026-10-21 shows how to upgrade.
We've released new versions of the client SDKs and the ant CLI that send API version 2026-10-21 by default
We've released new versions of the client SDKs and the ant CLI that send API version 2026-10-21 by default: Python SDK 2.0.0, TypeScript SDK 1.0.0, C# SDK 13.0.0, Go SDK 2.0.0, Java SDK 3.0.0, PHP SDK 1.0.0, Ruby SDK 2.0.0, and ant CLI 2.0.0. See Switch to 2026-10-21.
We've added the enforcement_status and enforcement_actions fields to user profiles, so you can see whether
We've added the enforcement_status and enforcement_actions fields to user profiles, so you can see whether Anthropic has restricted or banned one of your end customers. To find the profiles that have an open restriction or ban, list your profiles with the new enforcement_status[] filter. See Check whether Anthropic has restricted or banned a profile.
We've launched Claude Models on Google Cloud (Anthropic managed), the Claude API operated by Anthropic and
We've launched Claude Models on Google Cloud (Anthropic managed), the Claude API operated by Anthropic and reached through your Google Cloud project. Google Cloud IAM controls access. Google Cloud Marketplace handles billing.
Fast mode is available for Claude Opus 5.5 on Claude Models on Google Cloud (Anthropic managed)
Fast mode is available for Claude Opus 5.5 on Claude Models on Google Cloud (Anthropic managed).
Inference hooks are out of beta for Claude Enterprise organizations
Inference hooks are out of beta for Claude Enterprise organizations.
We've launched user profiles, so you can tell Anthropic which of your end customers each API request is for
We've launched user profiles, so you can tell Anthropic which of your end customers each API request is for. If you operate a platform or gateway, or resell API access, a safety enforcement action can then apply to one end customer instead of your whole organization. The SDK and the ant CLI support the new /v1/user_profiles endpoints.
We've added organization webhooks to the Admin API, in beta with the webhooks-2026-10-07 beta header
We've added organization webhooks to the Admin API, in beta with the webhooks-2026-10-07 beta header. Its /v1/organizations/webhooks endpoints register webhook endpoints for two event types: one for when Anthropic restricts or bans one of your organization's user profiles, and one for when the restriction or ban ends.
Also shipped on Oct 21, 2026
Anthropic in October 20262026.10.09
The voice catalog grows from about 390 to more than 1,400 voices. The 1,035 new voices span all five languages and 29 accents, for use cases from customer service to characters. Browse them in the Studio voice library or read the announcement . Also new in Studio : Preview samples: a voice can have several preview samples, each reading a different sentence.
The AI.CHUNK_DOCUMENT function is a table-valued function that splits unstructured documents into...
The AI.CHUNK_DOCUMENT function is a table-valued function that splits unstructured documents into semantically coherent text chunks optimized for vector embeddings and Retrieval-Augmented Generation (RAG) workflows. This function is generally available (GA).
Automated cataloging and ingestion of Looker (Google Cloud core) metadata with Knowledge Catalog is now...
Automated cataloging and ingestion of Looker (Google Cloud core) metadata with Knowledge Catalog is now generally available (GA). This includes support for additional granular metadata (including dimension/measure definitions, default queries, and relationships) and new asset types: LookML dashboards, LookML dashboard elements, and agents.
Screen MCP tool calls and results for jailbreaks (Beta)
You can now screen MCP tool calls and their results in Unity Gateway for jailbreak and prompt injection attempts. Apply the Jailbreak guardrail on input, output, or both. See Attach a built-in policy .
[Launched] Generally Available: Azure Cosmos DB Safe Key Rotation
Safe Key Rotation for Azure Cosmos DB is now generally available. You can view timestamp metadata showing when each account key was last used, helping you identify active keys before rotating or retiring credentials.This visibility helps reduce the risk o
OpenAI models are coming to Google Cloud
OpenAI frontier models and Codex workflows are now available in Google Cloud's Model Garden via the Google Cloud Marketplace.