← FeedCopy▾✕ Close copy menuCopy linkCopy AI promptCopy sourcePost on X ↗OpenAI· 29 MayHow Braintrust turns customer requests into code with CodexBraintrust engineers use Codex with GPT-5.5 to run experiments and code faster.From the sourceHow Braintrust engineers use Codex with GPT-5.5 to run experiments and code faster.openai.com