GitHub Rewrites Copilot Runtime in 800K Lines of Rust Using AI

GitHub detailed how it used AI to port its Copilot agent runtime from TypeScript to Rust—800K lines in about 14 weeks, led by a single engineer.

2026-09-17 ~ 2026-09-17 · 2 related posts

• GitHub rewrote the Copilot agent runtime into 800k lines of Rust, mostly written by AI agents — PaulShellDev · 2026-09-17
• GitHub Copilot ported its agent runtime from TypeScript to Rust: 800K lines, 14 weeks — vykthur · 2026-09-17