A developer says Codex is now their coding environment inside ChatGPT
kevinkern · x · 2026-07-27
A developer says they’re using Codex from OpenAI as their building environment—“basically ChatGPT, but made for coding,” now inside the ChatGPT app as ChatGPT Work & Codex.
When a friend replies that Claude is good for coding and ChatGPT is just for chatting, the post frames a common real-world question in AI dev workflows: how people should think about ChatGPT/Codex versus Claude for software building.
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