Anthropic releases
Anthropic news, Claude releases and SDK updates. New features, breaking changes, security advisories and deprecations - each summarised in plain English and updated continuously.
Tracking 125 Anthropic releases · Updated
- Claude Code Releases sdkaipreviewengineermediaenergy ·
Claude Code v2.1.181: New config syntax, macOS fixes, improved UI
This patch for Claude Code introduces a new in-prompt configuration syntax and enhances user experience with improved streaming and auto-retry mechanisms. It also addresses several critical bugs, particularly on macOS, related to Apple Events and startup performance. Users interacting with Claude Code will benefit from these stability and usability improvements, with no specific version prerequisites.
patch - Claude Code Releases sdkaipreviewengineer ·
Claude Code v2.1.174: Scroll acceleration, model picker, and attribution fixes
This patch for Claude Code v2.1.174 addresses several issues including the '/model' picker display, usage attribution for enterprise accounts, and background session environment inheritance. It also introduces a new setting to disable mouse-wheel scroll acceleration in fullscreen mode. These fixes are available immediately for users of Claude Code.
patch - Claude Platform Release Notes aipreviewengineer ·
Claude Platform Updates: Code Execution and Web Tools Enhanced
Anthropic has updated its code execution, web search, and web fetch tools on the Claude platform. The code execution tool now explicitly states a 90-second time limit to better manage cell execution, while the web tools have added a response inclusion parameter to streamline agentic workflows. These updates aim to improve the predictability and efficiency of Claude's interactions with external tools for developers.
feature - Claude Platform Release Notes aipreviewengineer ·
Anthropic Launches Claude Fable 5 and Mythos 5 with 1M Token Context
Anthropic has released Claude Fable 5, their most capable widely available model, and Claude Mythos 5 for Project Glasswing participants. Both models feature a 1 million token context window and enhanced adaptive thinking capabilities. These updates impact users interacting with the Claude API, particularly concerning tokenizer changes, safety classifier responses, and data retention policies for Fable 5.
feature announcement - Claude Platform Release Notes aigapreviewdeprecation ·
Claude Platform Updates: Opus 4.8, Mid-conversation System Messages, and Tooling
Anthropic has launched Claude Opus 4.8, their most capable generally available model, featuring a 1M token context window and enhanced reasoning capabilities. The release also introduces mid-conversation system messages and publicly documents the `stop_details` field for refusal responses, benefiting developers integrating Claude into applications. Opus 4.8 is now available via Claude API, Amazon Bedrock, and Vertex AI.
feature patch - Claude Platform Release Notes aipreviewmedia ·
Claude Platform Updates: New Models, Tools, and AWS Integration
Anthropic has released significant updates to its Claude Platform, including new models like Claude Fable 5 and Claude Opus 4.8, which offer larger context windows and improved capabilities. Enhancements to tools like code execution and web search, alongside new features like mid-conversation system messages and improved refusal handling, provide developers with more control and efficiency. The platform also expands its availability with Claude Platform on AWS and self-hosted sandbox options, broadening access and integration for enterprise users.
feature deprecation announcement patch - Anthropic Python SDK Releases sdkaipreviewengineermedia ·
Anthropic SDK Python v0.104.1 patches streaming bug
The Anthropic SDK for Python has released version 0.104.1, addressing a bug in its streaming functionality. This patch ensures that encrypted content is correctly handled during beta compaction, preventing data loss for users relying on this feature. The update is available now for all Python developers using the SDK.
patch - Anthropic Python SDK Releases sdkaipreviewmedia ·
Anthropic SDK Python v0.104.0 Adds Beta Token Count Support
Anthropic's Python SDK has been updated to version 0.104.0, introducing beta support for 'thinking-token-count'. This feature allows developers to estimate token usage within the thinking block of streaming responses. The update is relevant for developers using the Anthropic API via the Python SDK and is available now.
feature - Anthropic Python SDK Releases sdkaipreviewengineer ·
Anthropic SDK Python v0.102.0 adds managed agents and cache diagnostics
Anthropic's Python SDK has been updated to version 0.102.0, introducing new types for BetaManagedAgentsSearchResultBlock and support for cache diagnostics. These features enhance the SDK's capabilities for developers working with managed agents and allow for better monitoring of caching mechanisms. The update is available now for all users of the SDK.
feature patch - Anthropic Python SDK Releases sdkaipreviewengineer ·
Anthropic SDK Python v0.97.0: CMA Memory Beta, API Fixes, Performance
Anthropic's Python SDK has been updated to version 0.97.0, introducing the public beta of CMA Memory. This release also includes fixes for API specification errors and restores missing features, alongside performance optimizations for multipart requests. These changes primarily affect developers using the SDK for integration with Anthropic's AI models, with the CMA Memory feature available in public beta.
feature patch - Anthropic Python SDK Releases sdkaipreviewengineer ·
Anthropic SDK for Python 0.93.0 adds beta advisor tool
Anthropic released version 0.93.0 of its Python SDK, introducing a beta advisor tool. This new feature allows developers to leverage enhanced advisory capabilities within their applications. The update is available now for developers using the Python SDK and is marked as a beta feature.
feature - Claude Release Notes aipreviewengineer ·
Claude Code gains computer use capabilities for Pro/Max users
Anthropic is previewing a new "computer use" capability for Claude Code on Pro and Max plans, allowing it to interact with a user's computer to perform tasks. This feature enhances Claude's ability to act on user requests, especially within the Cowork environment and with Dispatch, by enabling it to run dev tools and navigate the UI. This functionality is available as a preview, requiring a Pro or Max subscription to access.
feature announcement - Claude Release Notes preview ·
Anthropic Claude Pro/Max: Persistent agent thread for Cowork management
Anthropic is introducing a persistent agent thread for Pro and Max plan users, enabling task management within Cowork from Claude Desktop or mobile apps. This feature begins rolling out to Max users immediately and will extend to Pro users within two days. The capability allows for seamless control of Cowork tasks directly from your phone.
feature announcement - Claude Release Notes aipreview ·
Anthropic launches Claude Sonnet 4.6 with enhanced capabilities
Anthropic has released Claude Sonnet 4.6, their most capable Sonnet model to date, featuring significant upgrades in coding, reasoning, and knowledge work. A key highlight is the beta availability of a 1 million token context window. This release aims to improve performance for a wide range of tasks for users.
feature announcement - Claude Release Notes aipreview ·
Cowork research preview expanded to Pro plans
Cowork, an AI research preview, is now available to Pro plan users on Claude Desktop for macOS. This expansion provides access to more users who may benefit from its capabilities. The feature is currently in preview and specifically targets macOS users on Pro plans.
announcement - Claude Release Notes aipreviewengineer ·
Claude Desktop Cowork research preview on macOS
Anthropic is releasing Cowork, a new research preview feature for Claude Desktop on macOS. This feature allows Claude to access local files and integrate with MCP, running in an isolated local VM to enhance knowledge work beyond coding. It is currently available for users with Max plans as a preview.
feature announcement - Claude Release Notes aipreviewengineer ·
Claude in Chrome Beta for Paid Plans
Claude in Chrome is now in beta for paid plan subscribers, offering new capabilities for developers and teams. This integration allows code building and testing directly within the browser, enhanced debugging with console log access, and workflow automation. It also introduces new administrative controls for managing the extension across organizations.
feature announcement - Claude Release Notes aipreviewengineer ·
Claude for Excel Beta Adds Pivot Tables, Charts, File Uploads
Claude for Excel is now available in beta for Max, Team, and Enterprise users, introducing new capabilities like pivot table and chart support, along with file uploads. A new shortcut allows users to quickly open the full Claude application from within Excel. These enhancements aim to improve user experience, performance, and context management, with detailed usage guidance available.
feature patch - Claude Release Notes aipreview ·
Claude Sonnet 4: 1M token context window in beta
Anthropic is rolling out a 1 million token context window for Claude Sonnet 4, a significant expansion of its input processing capacity. This feature is currently in beta and accessible to API organizations in usage tier 4 or those with custom rate limits. Further details are available in the documentation.
feature announcement