OpenAI’s new prompting guide tells users to stop overthinking and start with the result
It covers both the regular ChatGPT interface and Codex in a single framework, reflecting how the two are converging into one product. The tone is a bit different from OpenAI’s recent developer docs for GPT-5 and GPT-5.5, which focused on API parameters, reasoning-effort levels, and elaborate prompt schemas. The end-user guide drops all of that but keeps…