Enable Skills and build your own in Settings > Capabilities > Skills. Available now for all paid plans. Read more:

Skills work across https://t.co/XSKiQaAn4B, Claude Code, and the API. Claude identifies relevant Skills and applies them automatically. They can also stack together for complex workflows.

Claude can now use Skills. Skills are packaged instructions that teach Claude your way of working.

Devs can use Claude Haiku 4.5 on our API, Amazon Bedrock, and Google Cloud’s Vertex AI. It’s a drop-in replacement for both Haiku 3.5 and Sonnet 4. Read more:

Sonnet 4.5 remains the best coding model in the world. Haiku 4.5 gives you near-frontier performance with greater cost-efficiency. Use them together: Sonnet can build multi-step plans, then orchestrate a team of Haikus to complete subtasks in parallel.

Haiku 4.5 surpasses Sonnet 4 on computer use tasks, making Claude for Chrome even faster. In Claude Code, it makes multi-agent projects and rapid prototyping markedly more responsive.

Introducing Claude Haiku 4.5: our latest small model. Five months ago, Claude Sonnet 4 was state-of-the-art. Today, Haiku 4.5 matches its coding performance at one-third the cost and more than twice the speed.

Anyone can host a marketplace or make a plugin. All you need is a git repo with a .claude-plugin/marketplace.json file. Read more:

Try out the multi-agent workflow we use to develop Claude Code: /plugin marketplace add anthropics/claude-code /plugin install feature-dev

To get started, you can add a marketplace using: /plugin marketplace add user-or-org/repo-name. Then browse and install from the /plugin menu.

Today we’re introducing Claude Code Plugins in public beta. Plugins allow you to install and share curated collections of slash commands, agents, MCP servers, and hooks directly within Claude Code.

Come to the Air Mail newsstand in New York City today through Tuesday for coffee, conversations, and tote bags. (We're all out of caps.)

Join us tomorrow, October 4, from 9am–12pm at Air Mail newsstand in West Village, NYC. Keep thinking. (We're out of thinking caps today, but come back tomorrow for more caps and free coffee—available while supplies last.)

What have you built so far? We want to see it.

Demo extended for one more week. Pro and Max users can keep imagining with Claude.

Had a great conversation with @brada and @katelyn_lesse about what we're seeing as devs build agents with Claude. We covered: - How reducing scaffolding improves performance - The evolution of agentic frameworks - Building on the Claude Agent SDK - Best practices for managing

The Imagine with Claude demo is now expanded to Pro users. Give it a try:

Available now in the Slack App Marketplace for paid Slack plans and in the MCP directory for Claude Team and Enterprise plans.

You can also connect Slack to Claude. Claude searches your workspace channels, DMs, and files to provide context for deep work. Prep for meetings, gather project updates, or create documentation with full Slack context.

Claude is now available in Slack. Chat with Claude through DMs, tag @.Claude in threads, or use the AI assistant panel—with access to web search, document analysis, and your connected tools.