AI posts
AI release notes
Anthropic's official release notes. Claude apps: the website, desktop and phone apps. Claude Code: Claude's coding assistant. Claude API: what developers use to build Claude into their own products.
Compiled by the Toolstash team · Updated
Claude Code
Claude Code 2.1.1
Claude Code
Claude Code 2.0.76
1 fixFixed issue with macOS code-sign warning when using Claude in Chrome integration.
Claude API
We’ve retired the Claude Opus 3 model
All requests to this model will now return an error. We recommend upgrading to Claude Opus 4.5, which offers significantly improved intelligence at a third of the cost. Researchers can request ongoing access to Claude Opus 3 on the API through the External Researcher Access Program.
Claude Code
Claude Code 2.0.74
6 new6 fixes1 otherAdded LSP (Language Server Protocol) tool for code intelligence features like go-to-definition, find references, and hover documentation. Added /terminal-setup support for Kitty, Alacritty, Zed, and Warp terminals.
Claude Code
Claude Code 2.0.73
5 new1 fix3 otherAdded clickable [Image #N] links that open attached images in the default viewer. Added alt-y yank-pop to cycle through kill ring history after ctrl-y yank.
Claude API
We announced the deprecation of the Claude Haiku 3.5 model
Read more in Model deprecations.
Claude appsAnnouncement
Skills for organizations, partners, and the ecosystem, plus 1 more change
In October, we introduced skills—a way to teach Claude repeatable workflows tailored to how you work. Skills are now easier to deploy, discover, and build with organization-wide management for Team and Enterprise plans, a directory of partner-built skills, and an open standard (Agent Skills) so skills work across AI platforms. Claude in Chrome is now available in beta to all paid plan subscribers, including Pro, Team, and Enterprise plans.
Claude API
Structured outputs now support Claude Haiku 4.5
Claude API
We’ve launched Claude Opus 4.5, our most intelligent model combining maximum capability with practical…
Ideal for complex specialized tasks, professional software engineering, and advanced agents. Features step-change improvements in vision, coding, and computer use at a more accessible price point than previous Opus models. Learn more in Models overview. We’ve launched programmatic tool calling in beta, allowing Claude to call tools from within code execution to reduce latency and token usage in multi-tool workflows. We’ve launched the tool search tool in beta, enabling Claude to dynamically discover and load tools on-demand from large tool catalogs. We’ve launched the effort parameter in beta for Claude Opus 4.5, allowing you to control token usage by trading off between response thoroughness and efficiency. We’ve added client-side compaction to our Python and TypeScript SDKs, automatically managing conversation context through summarization when using tool_runner.
Claude appsAnnouncement
Claude Opus 4.5 launch, plus 3 more changes
We released our most powerful frontier model to date. Read our blog post for more information: Introducing Claude Opus 4.5. Claude for Excel is now available in beta to all Max, Team, and Enterprise users. We’ve added some additional capabilities, such as support for pivot tables, charts and file uploads, plus a shortcut to quickly open the full Claude app from Excel (ctrl+option+c). We've also made overall improvements to performance, speed, context management, and the general user experience.
Claude API
Search result content blocks are now available on Amazon Bedrock with no beta header required
Learn more in Search results.
Claude API
We’ve launched a new documentation platform at platform.claude.com/docs
Our documentation now lives side by side with the Claude Console, providing a unified developer experience. The previous docs site at docs.claude.com will redirect to the new location.
New model
New model: Claude in Microsoft Foundry
We’ve launched Claude in Microsoft Foundry, bringing Claude models to Azure customers with Azure billing and OAuth authentication. Access the full Messages API including extended thinking, prompt caching (5-minute and 1-hour), PDF support, Files API, Agent Skills, and tool use. Learn more in Claude in Microsoft Foundry.
Claude API
We’ve launched structured outputs in beta, providing guaranteed schema conformance for Claude’s responses
Use JSON outputs for structured data responses or strict tool use for validated tool inputs. Available for Claude Sonnet 4.5 and Claude Opus 4.1. To enable, use the beta header structured-outputs-2025-11-13.
Claude API
We announced the deprecation of the Claude Sonnet 3.7 model
Read more in Model deprecations. We’ve retired the Claude Sonnet 3.5 models. We’ve expanded context editing with thinking block clearing (clear_thinking_20251015), enabling automatic management of thinking blocks.
Claude apps
Claude’s memory on Max and Pro plans
Max plan users can now access Claude’s memory capabilities. This feature will roll out to Pro plans gradually over the next two weeks.
Claude API
We’ve launched Agent Skills, a new way to extend Claude’s capabilities
Skills are organized folders of instructions, scripts, and resources that Claude loads dynamically to perform specialized tasks. The initial release includes: * Anthropic-managed Skills: Pre-built Skills for working with PowerPoint (.pptx), Excel (.xlsx), Word (.docx), and PDF files * Custom Skills: Upload your own Skills through the Skills API (/v1/skills endpoints) to package domain expertise and organizational workflows * Skills require the code execution tool to be enabled * Learn more in Agent Skills and API reference
Claude API
We’ve launched Claude Haiku 4.5, our fastest and most intelligent Haiku model with near-frontier performance
Ideal for real-time applications, high-volume processing, and cost-sensitive deployments requiring strong reasoning. Learn more in Models overview.
Claude apps
Claude Haiku 4.5 launch, plus 1 more change
We released our fastest, most cost-efficient model – Claude Haiku 4.5. Our latest small model matches Sonnet 4’s performance on coding, computer use, and agent tasks. Powered by Haiku 4.5: Claude in Chrome now defaults to Haiku 4.5 so it’s a faster, more responsive experience. You can always switch back to Sonnet 4.5.
Claude API
We’ve launched Claude Sonnet 4.5, our best model for complex agents and coding, with the highest…
Learn more in the models overview. We’ve introduced global endpoint pricing for Amazon Bedrock and Vertex AI. We’ve introduced a new stop reason model_context_window_exceeded that allows you to request the maximum possible tokens without calculating input size. We’ve launched the memory tool in beta, enabling Claude to store and consult information across conversations. We’ve launched context editing in beta, providing strategies to automatically manage conversation context.
Claude appsAnnouncement
Claude Sonnet 4.5 launch, plus 2 more changes
We released our newest model, Sonnet 4.5. This is the best model in the world for real-world agents, coding, and computer use. Read our blog post here: Claude Sonnet 4.5. Pro users can now leverage Claude’s file creation and editing capabilities, and users on all paid plans can access these features on Claude for iOS or Android.
Claude apps
Claude’s memory on Enterprise plans, plus 3 more changes
Users on Enterprise plans can leverage memory; Claude can now remember relevant context from your chats and generate a memory summary. Incognito chats give you a way to exclude conversations from Claude’s memory. Refer to the following articles for more information:
Claude API
We’ve launched tool helpers in beta for the Python and TypeScript SDKs, simplifying tool creation and…
For details, see the documentation for the Python SDK and the TypeScript SDK.
Claude API
We’ve unified our developer offerings under the Claude brand
You should see updated naming and URLs across our platform and documentation, but our developer interfaces will remain the same. Here are some notable changes: * Claude Console (console.anthropic.com) → Claude Console (platform.claude.com). The console will be available at both URLs until January 12, 2026. After that date, console.anthropic.com will automatically redirect to platform.claude.com. * Anthropic Docs (docs.anthropic.com) → Claude Docs (docs.claude.com) * Anthropic Help Center (support.anthropic.com) → Claude Help Center (support.claude.com) * API endpoints, headers, environment variables, and SDKs remain the same. Your existing integrations will continue working without any changes.
Claude apps
Claude in Chrome expansion
Claude in Chrome expanded to 10,000 Max plan users with the release of new capabilities: Long-running workflows: Claude in Chrome can handle more complex, multi-step workflows, and continue working even when you switch tabs (as long as Chrome is open).
Claude apps
Claude’s memory on Team plans and incognito chats for free, Pro, Max, and Team plans, plus 3 more changes
Claude can now remember relevant context from your chats and will generate a memory summary. Incognito chats give you a way to exclude conversations from Claude’s memory. Refer to the following new articles for more information:
Claude API
We’ve launched the web fetch tool in beta, allowing Claude to retrieve full content from specified web pages…
Learn more in Web fetch tool. We’ve launched the Claude Code Analytics API, enabling organizations to programmatically access daily aggregated usage metrics for Claude Code, including productivity metrics, tool usage statistics, and cost data.
Claude apps
Creating and editing files with Claude, plus 2 more changes
Claude can now create and edit Excel spreadsheets, PowerPoint slide decks, documents, and PDFs directly in the Claude app. Refer to the following two articles for more information:
Claude API
We launched a beta version of the C# SDK
Claude API
We’ve launched rate limit charts in the Console Usage page, allowing you to monitor your API rate limit…