Solo engineer rewrites Copilot runtime in Rust with AI agents, 800k lines

GitHub's blog details how a single engineer, working with a team of Copilot agents, rewrote the Copilot agent runtime from TypeScript/Node.js to Rust, producing 800,000 lines of production-grade code in just a few months.

2026-09-22 ~ 2026-09-23 · 2 related posts

• One engineer plus agents ported Copilot agent runtime to Rust: 800k lines shipped — itsOmSarraf_ · 2026-09-22
• GitHub rewrote 800,000 lines of Rust using Copilot agents — one engineer in months — marlene_zw · 2026-09-23