OpenAI Reveals Near-Universal Internal Adoption of Codex

An OpenAI executive revealed that ChatGPT Work and Codex share the same agent harness. Furthermore, an interactive report by Every highlighted that nearly 100% of OpenAI employees are now actively using Codex.

2026-07-28 ~ 2026-07-28 · 2 related posts

• Every reports almost all of OpenAI now uses Codex internally — every · 2026-07-28
• OpenAI says ChatGPT Work and Codex share one agent harness in its everything-app push — Latent Space · 2026-07-28