AI Daily Brief — 25 May 2025

Sunday of US Memorial Day weekend. A quiet day. Developers spent the weekend running the new Claude 4 models in Cursor, GitHub Copilot and Claude Code (all GA). No fresh primary releases dated to May 25.

Top stories

• Claude 4 rollout continues over the weekend. Opus 4 and Sonnet 4 (announced Thursday at Code with Claude) kept being tested in Cursor, GitHub Copilot and the now-GA Claude Code. No new Anthropic announcement dated May 25. via Anthropic

Quiet corners

No confirmed billion-dollar funding rounds, regulatory actions or major lab announcements traced to May 25. Markets closed Monday for Memorial Day.

By the numbers

• 3 days — since Claude 4 launch
• 3 days — until DeepSeek-R1-0528 release
• Most-mentioned company: Anthropic (rolling story)

Compiled by AI Feed’s editor from verified web sources for 25 May 2025.