Codex Lead Explains Why the CLI Is Built in Rust and Open Source

In a Pragmatic Engineer podcast, OpenAI Codex lead Thibault Sottiaux discussed why the Codex CLI is written in Rust, why it stays open source, and how the Codex harness works.

2026-09-10 ~ 2026-09-11 · 2 related posts

• Codex founding engineer explains why Rust, why open source, and how the harness works — mathemagie · 2026-09-10
• OpenAI Codex Lead on Why They Chose Rust and Went Open Source — dotey · 2026-09-11