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 218 Anthropic releases · Updated
- Claude Platform Release Notes aiengineer ·
Claude Platform Updates: New Models, Rate Limits, and Tooling
Anthropic has released Claude Fable 5 and Claude Mythos 5 with large context windows and adaptive thinking, alongside Claude Opus 4.8 as its most capable GA model. Rate limits have been harmonized across API tiers, and support for new code execution and web search tool versions has been added. These updates affect users of the Claude API, SDKs, and Console, particularly those leveraging advanced AI capabilities and seeking improved performance.
feature patch deprecation - Anthropic Python SDK Releases sdkai ·
Anthropic SDK Python v0.113.0 adds web fetch and tool support
The Anthropic SDK for Python has been updated to version 0.113.0, introducing support for the 2026-03-18 API version, including web fetching and tool usage capabilities. This release addresses a bug in async count_tokens and includes chore updates for token counting with user profiles and documentation. These enhancements are available to all users of the Python SDK.
feature patch - Claude Code Releases sdkai ·
Claude Code v2.1.195: Fixes for dictation, plugins, and background agents
This Claude Code update fixes several issues including incorrect hook matching, voice dictation problems on macOS and for non-spaced languages, and problems with external plugin installation and management. It also addresses bugs related to background agents and crashed task restarts, improving reliability for users on Linux and within the IDE's agent management interface. The release aims to provide a more stable and predictable experience for developers using Claude Code for coding assistance.
patch - Claude Platform Release Notes aideprecation ·
Claude Platform Updates: New Models, Rate Limits, and Tooling
Anthropic has released significant updates to its Claude Platform, including new models like Claude Fable 5 and Claude Opus 4.8 with larger context windows and enhanced capabilities. Rate limits have been raised across the API, and several tools have been updated with new features and versions. The updates also include deprecations and retirements of older models, alongside new SDK support and platform features for managed agents and AWS integration.
feature patch deprecation - Claude Platform Release Notes aigaengineer ·
Claude Platform Updates: New Models, Rate Limits, and Tooling
Anthropic has released several updates to the Claude Platform, including new models like Claude Fable 5 and Claude Opus 4.8, with enhanced capabilities such as larger context windows and improved tool support. Rate limits have been raised and consolidated across API tiers, benefiting most users. These changes affect developers using the Claude API, SDKs, and console, with some older models and features being deprecated.
feature patch deprecation announcement - Claude Code Releases sdkaiengineer ·
Claude Code v2.1.193: New settings, improved background agents
This release introduces a new `autoMode.classifyAllShell` setting to enhance security by classifying all shell commands. It also adds auto-mode denial reasons to transcripts and toasts, and an OpenTelemetry log event for model responses. The update includes several improvements to background agents, fixes for UI and background task issues, and enhanced plugin and MCP authentication.
patch feature - Claude Code Releases sdkaimedia ·
Claude Code v2.1.191: Rewind support, fixes, and performance
This release adds support for resuming conversations with the new `/rewind` command and addresses several bugs affecting agent behavior, UI elements, and command-line interactions. Performance is improved with reduced CPU usage during streaming and better memory management. These updates are primarily for users of Claude Code and its agent functionalities.
patch feature - Anthropic Python SDK Releases sdkaimedia ·
Anthropic SDK Python v0.112.0: System message streaming, memory tool fixes
Anthropic's Python SDK has been updated to v0.112.0, introducing support for streaming system message events and fixing a bug in the memory tool related to directory creation. These updates enhance the SDK's capabilities for developers building with Anthropic's AI models. The release includes a new feature for system message streaming and several minor improvements. This update is available now for all users of the Python SDK.
feature patch - Claude Code Releases sdkaiengineer ·
Claude Code v2.1.190: Bug fixes and reliability improvements
Claude Code has been updated to version 2.1.190, focusing on bug fixes and reliability enhancements. These improvements aim to provide a more stable and consistent experience for users of the code generation model. The update is now available.
patch - Claude Code Releases sdkaiengineer ·
Claude Code CLI and VS Code Extension Updates
The latest update for Claude Code introduces new security features like credential blocking and organization-wide model restrictions, alongside usability enhancements such as mouse click support for menus and improved handling of structured output. This release also addresses several critical bugs impacting command execution, remote tool calls, and text encoding, benefiting developers using the CLI or VS Code extension.
patch feature - Claude Code Releases sdkaiengineermedia ·
Claude Code v2.1.186 CLI Enhancements and Fixes
Claude Code v2.1.186 introduces CLI authentication for MCP servers and new status filtering for workflows, improving developer workflow management. These updates primarily benefit software engineers and architects using the CLI for development and deployment tasks. The release also addresses several bugs, including issues with streaming requests and subagent transcript handling, while adding new features like teammate mode for iTerm2.
feature patch - Claude Code Releases sdkaiengineer ·
Claude Code v2.1.185: Improved API stall detection
Claude Code v2.1.185 updates the stream-stall hint message and increases the detection delay for API response stalls. This change aims to provide a clearer user experience by indicating retries and offering more patience before prompting the user about potential API issues. The update is relevant for developers using Claude Code who may encounter or rely on these stall messages.
patch - Claude Code Releases sdkaideprecationengineer ·
Claude Code v2.1.183: Enhanced Safety and UX Improvements
This release of Claude Code includes significant safety enhancements, particularly around destructive Git and infrastructure commands, and improves the user experience with clearer model warnings and streamlined configuration. It addresses several bugs impacting subagent performance, terminal interaction, and task handling. These updates are primarily for developers and engineers interacting with Claude Code for coding and infrastructure tasks.
patch deprecation - Anthropic Python SDK Releases sdkai ·
Anthropic SDK Python v0.110.0 adds code execution tool support
Anthropic's Python SDK has been updated to version 0.110.0, introducing support for the new code_execution_20260120 tool. This update enhances the SDK's capabilities for developers integrating with Anthropic's AI models. Several bug fixes are also included, addressing issues with header merges, stream event types for Bedrock, and header key management. The release is available now for users of the Python SDK.
feature patch - 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 sdkaiengineer ·
Claude Code v2.1.179: Fixes for connection drops, scrolling, and UI issues
Claude Code version 2.1.179 addresses several issues, including preserving partial responses during mid-stream connection drops, restoring mouse-wheel scrolling in specific environments, and resolving sandbox errors. These fixes aim to improve stability and user experience for developers using Claude Code. The update is available as a patch release.
patch - Claude Code Releases sdkaiengineer ·
Claude Code v2.1.178: Enhanced permissions, skills, and agent handling
This patch for Claude Code v2.1.178 introduces new syntax for permission rules, enabling finer control over tool usage by specifying parameters. It also improves how nested skills and directories are handled, ensuring proper loading and resolution of potential name conflicts. These changes benefit developers using Claude Code for complex projects, particularly those involving custom tools and nested configurations, with fixes also addressing agent stability and authentication issues.
patch - Anthropic Python SDK Releases sdkaiengineer ·
Anthropic SDK Python v0.109.2 removes retired models
Anthropic's Python SDK has been updated to version 0.109.2, removing retired models from both the API and the SDK itself. This change is a routine maintenance update aimed at cleaning up the available model list. It affects developers using the SDK who may have previously interacted with these now-unavailable models.
patch - Claude Platform Release Notes ai ·
Claude Platform Updates: New Models, Tools, and Cloud Support
Anthropic has released Claude Fable 5 and Claude Opus 4.8, offering enhanced capabilities like 1M token context windows and improved reasoning. New tool versions for code execution and web search, along with expanded support for Claude Platform on AWS, cater to developers and researchers. The release also includes deprecations of older models like Sonnet 4 and Opus 4, signaling a push towards newer, more powerful versions.
feature deprecation announcement - Claude Code Releases sdkai ·
Claude-Code v2.1.177 Patch Release
Anthropic has released version 2.1.177 of Claude-Code, focusing on stability improvements and bug fixes. This patch aims to enhance the reliability of code generation and understanding capabilities for developers. The update is available now for users of the Claude-Code model.
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About Anthropic release tracking on ReleaseBytes
Anthropic ships Claude model releases, API updates and SDK versions on a rapid cadence. ReleaseBytes tracks the official Anthropic announcement channels and SDK changelogs, summarising each release and flagging model deprecations and breaking changes so teams building on Claude stay ahead of them.
Frequently asked questions
How often are Anthropic release notes updated on ReleaseBytes? ›
Continuously. ReleaseBytes monitors the official Anthropic release channels around the clock and publishes a plain-English summary of each announcement shortly after it lands.
What kinds of Anthropic changes does ReleaseBytes track? ›
New features, enhancements, bug fixes, security advisories, breaking changes, deprecations and end-of-life announcements. Every item is tagged by type so you can filter to just the changes that need action.
How can I get alerts for new Anthropic releases? ›
Set up a free email or Slack alert filtered to Anthropic, subscribe to the weekly digest, or follow the RSS feed. Teams can also install the ReleaseBytes GitHub App or connect via MCP.
Where does the Anthropic release data come from? ›
From the official sources: Anthropic news, Claude releases and SDK updates. Every item links back to the original vendor announcement.