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Charlie Marsh Boosts OpenAI Codex CLI Startup Speed by 25x

Charlie MarshPythonRustOpenAICodex CLI
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Charlie Marsh, the author of the famous Python tool uv and one of the strongest Rust developers, has already managed to prove himself after moving to OpenAI.

He directly optimized the startup speed of the Codex CLI and sped it up by 25 times, achieving an almost instantaneous start.

We can make this even faster.

— he writes.

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cpaua

VibeCode blog admin. Writing about vibe coding, AI and open source.

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