Anthropic Rewrote Its Messages API in Rust With Zero Rust Devs, CPU Down 40-50%
kieranklaassen · x · 2026-10-31
Anthropic rewrote its Messages API in Rust with zero Rust engineers on the team: Claude wrote the code, humans wrote the plan and verified old-vs-new parity on real traffic. CPU usage dropped 40-50%. swyx notes that "never do the big rewrite" is officially dead advice.
Related event: Anthropic Rewrites Messages API in Rust with Claude, Cutting CPU 40-50%(2 posts)→
More from coding & agent
- Interview: How Google refactored 250M lines of C++ and why CS curricula need a redo — CatAstro_Piyush · 2026-10-31
- Expand Search launches Pareto frontier search for agents at $1.50 per 1,000 searches — bclavie · 2026-10-31
- Vercel Labs ships agent-desktop: token-efficient computer use for the whole OS — cramforce · 2026-10-31
- 83 AI agents spend 45 hours and 3.9B tokens creating "what SI thinks about alone" — tetsuoai · 2026-10-31
- GitHub Copilot App v1.1.34 ships 117 features: faster session resume, agent merge, CSV tables — 0xkarasy · 2026-10-31
- Playwright MCP Server lets AI assistants drive remote browsers — modelcontextprotocol · 2026-10-31