Trying Codex

Teruhisa
·
公開:2025/12/21

AI fixed my writing ✏️

I mainly use Claude Code for coding, but I heard that Codex has been getting better, so I tried using it today to build some tools.

My first impression was that Codex’s output wasn’t as good as Claude Code’s when using simple prompts. I didn’t try providing an `AGENTS.md`, so I’m not sure whether it could perform better with more context.

That said, I also felt that Claude Code’s processing speed has been getting slower than before.


Original one ✏️

I use Claude Code mainly for coding but I heard Codex has been getting better so I tried to use it today for building some tools.

In my first impression, I think Codex's generating result is not good than Claude Code with my simple prompts. I didn't try to give AGENTS.md so I'm not sure it can be done more effectively.

Anyway, I felt that Claude Code's processing is getting slower than before.


Improvement Points By AI

  • Use commas and conjunctions to improve readability in long sentences.

  • Replace incorrect comparison forms (“not good than”) with “not as good as.”

  • Use natural technical vocabulary (“output,” “processing speed”).

  • Prefer idiomatic expressions (“My first impression was…,” “That said…”).

  • Clarify vague references and express conditional ideas naturally.

@t6adev
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