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 Code Releases sdkaiengineer ·
Claude Code updates default model to Sonnet 5
Claude Code has updated its default model to Claude Sonnet 5 in version 2.1.197. This change introduces a native 1 million token context window and offers promotional pricing through August 31st. Users can update to access these improvements.
feature announcement - Anthropic News aiengineer ·
Anthropic Introduces Claude Sonnet 5
Anthropic has launched Claude Sonnet 5, a new iteration of their AI model family. This update aims to provide enhanced performance and capabilities for various AI applications. The model is now available for use, targeting developers and businesses seeking advanced AI solutions.
feature announcement - Anthropic Python SDK Releases sdkaiengineer ·
Anthropic SDK Python v0.114.0 adds Sonnet 5 API support
Anthropic's Python SDK has been updated to version 0.114.0, introducing support for the Claude-Sonnet-5 model API. This release also fixes an issue with agent toolsets allowing absolute paths within the working directory. The update is available now for users of the Python SDK.
feature patch - Anthropic News aiengineerhealthcare ·
Anthropic Launches Claude Science AI Workbench for Researchers
Anthropic has released Claude Science, an AI workbench designed to accelerate scientific discovery by integrating commonly used research tools and packages. The workbench provides auditable artifacts, flexible compute access, and specialized agents for various scientific domains, aiming to streamline complex research workflows. It is now available in beta for Claude Pro, Max, Team, and Enterprise users, offering enhanced reproducibility and computational management. This release allows scientists to analyze literature, execute multi-step research, and refine figures and manuscripts within a unified environment.
feature announcement - Claude Code Releases sdkaiengineermedia ·
Claude Code v2.1.196: Organization defaults, better session management, and security
This release introduces organization-level default model settings for admins and improves session management with readable names and clickable attachments. Security is enhanced by preventing untrusted workspaces from auto-approving configurations. These updates benefit all users, especially administrators managing shared environments, by improving usability and security posture.
patch security - 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 Release Notes aiengineer ·
Claude Tag for Slack Task Delegation Released
Team and Enterprise plans can now use Claude Tag within Slack conversations to delegate tasks. This feature allows users to assign work to Claude without interrupting their focus on other activities. Further details are available in a dedicated blog post announcing the launch.
feature 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 - Anthropic News aiengineer ·
Anthropic Introduces Claude Tag for Collaborative AI in Slack
Anthropic has launched Claude Tag, a new feature allowing teams to integrate Claude as a collaborative AI member within Slack channels. This enables users to delegate tasks, leverage connected tools and data, and benefit from Claude's contextual memory and proactive updates, enhancing team productivity. Claude Tag is available today in beta for Claude Enterprise and Team customers, offering a more integrated and asynchronous AI collaboration experience.
feature announcement - 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
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.
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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.