Anthropic events 2025
May 22, 2025 · San Francisco · Anthropic 2026
Code with Claude Opening KeynoteMay 22, 2025 · 1h 40m · Mike Krieger, Dario AmodeiAt Anthropic's first developer conference, Mike Krieger and Dario Amodei launched Claude Opus 4 and Claude Sonnet 4 and detailed MCP, Claude Code, and a new code execution tool.
Key themes: Models, AI coding, Agents
- 1Mike Krieger opened Code with Claude, Anthropic's first developer conference, in front of a live audience
- 2Dario Amodei announced Claude Opus 4 and Claude Sonnet 4 were releasing live across all Anthropic products
- 3Claude 4 models add near-instant responses alongside an extended thinking mode for harder problems
- 4Amazon's Alexa team used Claude to prototype new assistant functionality ahead of the Alexa+ launch
- 5A new code execution tool in the API lets Claude write and run code directly during a conversation
- 6Claude Code can now run inside GitHub workflows using the Claude Code SDK
- 7Anthropic said it created MCP as a universal translator between AI models and external tools, and that Microsoft is building MCP into its Build keynote plans
| Announcement | Status |
|---|---|
| Claude Opus 4Flagship model, leads SWE-bench at 72.5% | GA |
| Claude Sonnet 4Mid-tier model, state of the art 72.7% on SWE-bench | GA |
| Claude CodeExpanded to general availability with IDE integrations | GA |
| Code execution toolAPI tool letting Claude execute code directly | GA |
| Extended thinking with tool useBeta reasoning mode with web search during processing | Preview |
| Model Context Protocol adoptionAnthropic formalizing MCP as an open standard | Announced |
Companies on stage
Named or launching: Amazon, Anthropic, Augment Code, Block, Cognition, Cursor, GitHub, Google Cloud, iGent, Manus, Microsoft, Rakuten, Sourcegraph
Sources: official keynote videos, their captions and the hosts' recaps, summarized by AI; watch the source for exact wording. Logos via logo.dev; trademarks belong to their owners.