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codex: Lightweight coding agent that runs in your terminal

github.com/openai/codex

Repository

openai/codex

Lightweight coding agent that runs in your terminal

Rust · 130,671 stars · Apache-2.0 · last push October 23, 2026

What Jamie wrote

It is interesting to me that OpenAI calls this "lightweight". This directly competes with Claude Code and looks pretty interesting. I’m always a little cautious that the demos of these tools can be amazing and fall short of practical use. Need to try on some personal projects.