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
- endoflife.date eolanthropic-models ·
Claude model claude-opus-4-1-20250805 reaches end of life in 7 days
Claude model claude-opus-4-1-20250805 reaches end of life on 2026-08-05 (7 days from now).
deprecation - Claude Platform Release Notes aideprecationengineer ·
Claude Workbench and Prompt Tools APIs to be Retired
Anthropic is retiring the legacy Claude Console Workbench on August 17, 2026, and will no longer support saved prompts, variables, or evals. The experimental prompt tools APIs will also be retired on the same date. Users should export any necessary data from the legacy Workbench and be aware that API requests to the retired endpoints will fail after the sunset date.
deprecation - Claude Platform Release Notes aipreview ·
Claude Platform Updates Include New API Features and Model Enhancements
Anthropic has released several updates to its Claude Platform, including new API capabilities for managing organizations and conversations, and enhancements to model features like context windows and memory management. These changes aim to improve developer control, user experience, and model performance for a wide range of users, from individual developers to enterprise organizations. Notable additions include mid-conversation system messages, an Admin API for user management, and a new Sonnet 5 model with expanded capabilities, some of which are currently in beta or preview.
feature patch deprecation announcement - endoflife.date eolanthropic-models ·
Claude model claude-opus-4-1-20250805 reaches end of life in 24 days
Claude model claude-opus-4-1-20250805 reaches end of life on 2026-08-05 (24 days from now).
deprecation - Claude Platform Release Notes aigaengineer ·
Claude Platform Updates: New Sonnet 5, API Key Expiration, Agent Memory
Anthropic has released Claude Sonnet 5 with a 1M token context window and updated pricing, introducing significant behavioral changes and a new tokenizer for Sonnet 5. The Claude Platform now supports API key expiration in the Console, enhancing security for administrators. Additionally, updates to agent memory handling and SDKs improve developer experience and tool integration across various models.
feature patch deprecation - Claude Platform Release Notes aigaengineer ·
Claude Platform Updates: API Keys, New Models, and Tooling Enhancements
Anthropic has released updates to the Claude Platform, including new model versions like Claude Sonnet 5, Fable 5, and Mythos 5, and enhanced tooling for API keys and managed agents. These changes offer improved context windows, adaptive thinking, and more granular control over agent behavior and security. The updates affect developers building applications with Claude models, providing new capabilities and requiring some migration steps for certain features.
feature patch deprecation announcement - Claude Platform Release Notes ai ·
Claude Platform Updates: New Models, Features, and Deprecations in July 2026
Anthropic has released Claude Sonnet 5, Claude Fable 5, and Claude Mythos 5, featuring expanded context windows and updated tokenizers, impacting prompt token counts. Several enhancements to Claude Managed Agents improve session event streaming, pagination, and configuration overrides. The platform also introduced new tool versions for code execution and web search, alongside API and SDK updates, while deprecating older Opus and Sonnet models and fast mode for certain versions.
feature patch deprecation - 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 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 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 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 - 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 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 - Claude Platform Release Notes aideprecation ·
Claude Platform Updates: New Models, Deprecations, and Tool Enhancements
Anthropic has released new flagship models, Claude Fable 5 and Claude Opus 4.8, featuring larger context windows and enhanced adaptive thinking. The company is also retiring older models like Claude Sonnet 4 and Opus 4.1, recommending upgrades. Several tools and platform features, including code execution, web search, and managed agents, have received updates and expanded availability on AWS, impacting developers and researchers using the Claude API.
feature deprecation patch - Claude Platform Release Notes ai ·
Claude Platform Updates: New Models, Tools, and AWS Integration
Anthropic has released new models like Claude Fable 5 and Claude Opus 4.8, featuring expanded context windows and improved adaptive thinking. Updates to tools like the code execution and web search tools enhance agentic workflows. Key features include mid-conversation system messages and expanded Claude Managed Agents capabilities on AWS. These updates are relevant to developers and architects integrating Claude into applications.
feature deprecation 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 - Claude Release Notes deprecation ·
Claude Opus 4 and 4.1 models deprecated
Anthropic has removed the Opus 4 and 4.1 model versions from Claude and Claude Code. This change affects users who were utilizing these specific model versions. The company provides an article for guidance on adapting to new model personas following this deprecation.
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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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.