AI posts
AI release notes
Anthropic's official release notes. Claude apps: the website, desktop and phone apps. Claude Code: Claude's coding assistant. Claude API: what developers use to build Claude into their own products.
Compiled by the Toolstash team · Updated
Claude API
We’ve launched support for citable documents in client-side tool results
Learn more in Handle tool calls.
Claude apps
Location, maps, and calendar access on Claude for iOS and Android, plus 2 more changes
Claude can now connect with iOS and Android apps to draft calendar events, help you find locations, and manage reminders (iOS only).
Claude API
We’ve launched v2 of the Code Execution Tool in beta, replacing the original Python-only tool with Bash…
Claude API
We launched a beta version of the PHP SDK
Claude apps
Code Execution Tool
A new API tool that allows Claude to execute Python code in a secure, sandboxed environment. Refer to our docs for more information: Code execution tool.
Claude API
We’ve increased rate limits on the 1M token context window for Claude Sonnet 4 on the Claude API
The 1M token context window is now available on Vertex AI.
Claude apps
Claude in Chrome
An experimental browser extension that allows Claude to read, click, and navigate websites alongside you.
Claude apps
Admin controls for desktop extensions, plus 1 more change
Allows Team and Enterprise plans to enable/disable public desktop extensions and upload custom extensions. Claude users with free, Pro, or Max plans can generate an embed code for any published artifacts.
Claude apps
Premium seats with Claude Code for Team and Enterprise plans, plus 3 more changes
Introduced a premium seat tier for Team and Enterprise plans offering more usage and access to Claude Code. Refer to the following articles for more information: A new setting allows Team and Enterprise plan users to purchase more usage to continue chatting with Claude or using Claude Code after hitting their usage limit.
Claude API
Request IDs are now included directly in error response bodies alongside the existing request-id header
Learn more in Error shapes.
Claude API
We’ve released the Usage & Cost API, allowing administrators to programmatically monitor their…
We’ve added a new endpoint to the Admin API for retrieving organization information.
Claude apps
Ability to change monthly Team plan billing to annual
Allowing Team plan organizations with monthly billing to upgrade to annual billing.
Claude API
We announced the deprecation of the Claude Sonnet 3.5 models
These models will be retired on October 28, 2025. We recommend migrating to Claude Sonnet 4.5 (claude-sonnet-4-5-20250929) for improved performance and capabilities. Read more in Model deprecations. The 1-hour cache duration for prompt caching no longer requires a beta header.
Claude API
We’ve launched beta support for a 1M token context window in Claude Sonnet 4 on the Claude API and Amazon…
Claude apps
1M token context window
The 1M token context window for Claude Sonnet 4 is currently in beta for API organizations in usage tier 4, or with custom rate limits.
Claude API
Some customers might encounter 429 errors following a sharp increase in API usage due to acceleration limits…
Previously, 529 (overloaded_error) errors would occur in similar scenarios.
Claude apps
Ability to search past conversations
Users on Max, Team, Enterprise plans can prompt Claude to search over past chats, allowing finer-grained context continuation and synthesizing across topics.
Claude API
Search result content blocks are out of beta on the Claude API and Vertex AI
This feature enables natural citations for RAG applications with proper source attribution. The beta header search-results-2025-06-09 is no longer required. Learn more in Search results.
Claude apps
Claude Code Security Reviews
Two new cybersecurity features were added to Claude Code: /security-review command
Claude API
We’ve launched Claude Opus 4.1, an incremental update to Claude Opus 4 with enhanced capabilities and…
Claude appsAnnouncement
Claude Opus 4.1
Claude Opus 4.1 (an incremental update to Opus 4) brings enhanced performance as our most capable model for complex reasoning, analysis, and creative tasks. Read our announcement here: Claude Opus 4.1.
Claude apps
Project Sharing
Enabled project permissions and sharing for Team and Enterprise plans. Note: Refer to our docs for historical release notes.
Claude API
We’ve released text_editor_20250728, an updated text editor tool that fixes some issues from the previous…
Claude API
We’ve increased rate limits for Claude Opus 4 on the Claude API to give you more capacity to build and scale…
For customers with usage tier 1-4 rate limits, these changes apply immediately to your account - no action needed.
Claude API
We’ve retired the Claude 2.0, Claude 2.1, and Claude Sonnet 3 models
All requests to these models will now return an error. Read more in Model deprecations.
Claude API
We’ve increased rate limits for Claude Sonnet 4 on the Claude API to give you more capacity to build and…
For customers with usage tier 1-4 rate limits, these changes apply immediately to your account - no action needed.
Claude API
We’ve launched search result content blocks in beta, enabling natural citations for RAG applications
Tools can now return search results with proper source attribution, and Claude will automatically cite these sources in its responses - matching the citation quality of web search. This eliminates the need for document workarounds in custom knowledge base applications. Learn more in Search results. To enable this feature, use the beta header search-results-2025-06-09.
Claude API
We announced the deprecation of the Claude Opus 3 model
Read more in Model deprecations.
Claude API
In the Console, users with the Developer role can now access the Cost page
Previously, the Developer role allowed access to the Usage page, but not the Cost page.
Claude API
We’ve launched fine-grained tool streaming in beta, a feature that enables Claude to stream tool use…
To enable fine-grained tool streaming, use the beta header fine-grained-tool-streaming-2025-05-14.