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 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.
patch - Claude Code Releases sdkaiengineer ·
Claude Code v2.1.176: Improved credential caching, session features, and bug fixes
Claude Code version 2.1.176 introduces several enhancements, including session titles in the conversation's language and improved AWS Bedrock credential caching for longer validity. It also fixes numerous bugs affecting model selection, auto mode fallbacks, hook conditions, sandbox operations, and remote control functionality. These updates benefit developers and organizations using Claude Code by improving stability, usability, and security, particularly for those with specific model allowlists or complex session management needs.
patch feature - Claude Code Releases sdkai ·
Claude Code v2.1.175: Enforce Available Models Setting
A new `enforceAvailableModels` setting is introduced in Claude Code v2.1.175, enhancing security and control. When enabled, this setting ensures that the default model respects the `availableModels` allowlist, preventing fallback to disallowed models. This change primarily impacts organizations and administrators managing model access for their development teams.
patch feature - 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 - Anthropic News aigovernment ·
Anthropic suspends Fable 5 and Mythos 5 due to US government directive
Anthropic is suspending access to its Fable 5 and Mythos 5 models for all customers in response to a US government export control directive. The government cited national security concerns, believing a method to bypass the model's safeguards has been discovered. This action affects all users, including foreign national Anthropic employees, though other Anthropic models remain unaffected. Anthropic disagrees with the severity of the finding and is working to restore access.
announcement breaking - Claude Code Releases sdkaiengineer ·
Claude-Code v2.1.173: Fable 5 model names normalized, Windows startup warning fixed
Claude-Code v2.1.173 resolves an issue where Fable 5 model names were not normalized due to a `[1m]` suffix, which is now automatically stripped. Additionally, a spurious "sandbox dependencies missing" warning on Windows when the sandbox is enabled has been fixed. These changes primarily affect users of the Fable 5 model and Windows users with sandbox enabled.
patch - Claude Code Releases sdkaiengineermedia ·
Claude Code v2.1.172: Sub-agents, Bedrock region, and numerous fixes
This patch for Claude Code introduces a significant enhancement allowing sub-agents to spawn their own sub-agents up to five levels deep, expanding agent capabilities. It also improves Amazon Bedrock integration by respecting AWS region configuration and includes fixes for session management, tool usage, and UI rendering. These changes benefit developers and architects using Claude Code for complex agent-based workflows, particularly those integrating with AWS services or encountering specific tool/UI bugs.
patch feature - Claude Platform Release Notes ai ·
Claude Platform Updates: New Models, Tooling, and AWS Integration
Anthropic has released updates to its Claude Platform, including new models like Claude Fable 5 and Claude Opus 4.8, offering enhanced capabilities and larger context windows. The platform also introduces new tool functionalities, improved agent orchestration on AWS, and deprecates older models, requiring users to migrate to newer versions. These changes affect developers and organizations using the Claude API and its associated client SDKs and console.
feature deprecation patch - Anthropic Python SDK Releases sdkaiengineer ·
Anthropic SDK for Python v0.109.1 fixes API refusal category
Anthropic's Python SDK has been updated to version 0.109.1, introducing a bug fix for its API. This update adds the 'frontier_llm' refusal category, providing clearer information on specific API rejection reasons. This change is relevant for developers using the SDK to interact with Anthropic's language models.
patch - Claude Code Releases sdkaigaengineer ·
Anthropic Claude Code v2.1.170: Fable 5, Session Fixes
Anthropic has released Claude Code version 2.1.170, introducing the new Mythos-class model Claude Fable 5, now safe for general use and exceeding previous model capabilities. This update also resolves an issue where sessions and transcripts were not saved or retrievable via `--resume` when launched from specific terminal environments. This patch is available now for all users.
feature patch - Claude Code Releases sdkaiengineerfinance ·
Claude Code v2.1.169: Troubleshooting, Directory Navigation, and UI Fixes
This update to Claude Code introduces a `--safe-mode` flag for troubleshooting and a `/cd` command for changing directories mid-session without disrupting the prompt cache. It also includes numerous bug fixes addressing issues with UI responsiveness, enterprise policies, and agent management across platforms. These changes benefit developers and architects troubleshooting complex setups or working with large codebases, offering a more stable and efficient experience.
patch feature - Anthropic Python SDK Releases sdkaiengineer ·
Anthropic SDK Python v0.107.1 fixes API key header issue
This release of the Anthropic SDK for Python, version 0.107.1, addresses a bug related to API key authentication. Specifically, it ensures the 'x-api-key' header is correctly sent when using API key authentication with Foundry. This fix is important for users experiencing authentication failures due to the missing header.
patch - Claude Code Releases sdkaiengineer ·
Claude-Code v2.1.168: Bug fixes and reliability improvements
Claude-Code version 2.1.168 has been released, focusing on bug fixes and general reliability enhancements. This patch aims to improve the stability and performance of the Claude-Code model for its users. The update is available now for those who use Claude-Code in their development workflows.
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