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
- Anthropic News aigaengineer ·
Anthropic Fable 5 Model Access Restored After Export Control Lifted
Anthropic's Fable 5 and Mythos 5 models had their access restricted due to US export controls, which have now been lifted. Fable 5 will be globally available starting July 1st, with specific access terms for different plans and platforms. The company is also enhancing its safeguards and collaborating on an industry framework for AI model safety.
feature announcement - Anthropic Python SDK Releases sdkaiengineermedia ·
Anthropic SDK for Python v0.115.0 Adds Agent and Managed Agent Features
Anthropic has released SDK for Python v0.115.0, introducing several new features for agents and managed agents. These enhancements include support for event delta streaming, agent overrides, reverse pagination, and credential injection scoping. The update also adds webhook events for agents and deployments, providing greater control and flexibility for developers integrating AI agents.
feature - Claude Platform Release Notes aigapreviewengineer ·
Claude Platform Updates: New Models, Rate Limits, and SDK Enhancements
Anthropic has released Claude Sonnet 5 and Claude Fable 5, introducing new pricing and a 1M token context window. Rate limits have been standardized across models, and several older models are retired. The release also includes SDK updates, new tool capabilities, and enhancements to managed agents, affecting developers and architects working with the Claude API.
feature deprecation patch - Claude Platform Release Notes aigadeprecationengineer ·
Claude Sonnet 5 Launched with 1M Token Context, New Tokenizer
Anthropic has launched Claude Sonnet 5, featuring a 1 million token context window and a new tokenizer that increases token count by approximately 30%. This release impacts users migrating from Sonnet 4.6 due to changes in adaptive thinking and the removal of manual extended thinking. Sonnet 5 is available at introductory pricing until August 31, 2026, with Priority Tier support not included.
feature deprecation patch - 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 - 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 Release Notes securityengineer ·
Trusted Devices for Remote Control of Claude Code Sessions
Anthropic is introducing a new security feature for Team and Enterprise plans, allowing admins to enforce device verification before remote access to local Claude Code sessions. This enhancement aims to improve security by ensuring that only trusted devices can view or control these sessions. The feature is available now and more details can be found in the provided documentation.
feature - 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 Platform Release Notes aipreviewengineer ·
Claude SDKs add support for code execution tool version 20260120
The Python, TypeScript, Go, Java, Ruby, PHP, and C# SDKs now support the `code_execution_20260120` tool version. This update enhances tool usage by enabling REPL state persistence and is the minimum version required for programmatic tool calling. The feature is available on specific Claude model versions and requires setting the tool's type accordingly.
feature - 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.
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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.