- Published on June 25, 2025
- In Global Tech
OpenAI is Ditching TypeScript to Rebuild Codex CLI with Rust
“We will ultimately be retiring the TypeScript version of the CLI in favour of the Rust one.”
Image by Nalini Nirad
- By Ankush Das
When OpenAI launched Codex CLI, the aim was to make it easier for developers to interact with AI in the terminal using a familiar stack—TypeScript and React-based Ink.
While it tries to compete with Claude Code and similar tools, the team decided to revamp its foundation for better performance. “We’ve been working on a rewrite of Codex CLI into Rust,” Fouad Matin, a member of technical staff at OpenAI, said in a GitHub discussion thread.
Although the TypeScript version was productive for fast prototyping, it started to show its limits as the Codex CLI matured with various use cases.
Now, OpenAI plans to retire the TypeScript CLI entirely in favour of Rust. Matin mentioned that the TypeScript version will continue to receive bugfixes for now and that the f
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Ankush Das
I am a tech aficionado and a computer science graduate with a keen interest in AI, Coding, Open Source, Global SaaS, and Cloud. Have a tip? Reach out to ankush.das@aimmediahouse.com
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