Prompt Engineering Guide (OpenAI API Documentation)

OpenAI's official guide to prompt engineering, covering message roles, developer instructions, few-shot learning, Markdown and XML prompt structuring, prompt caching and the use of retrieved context. It also explains how prompting differs between standard and reasoning models. Provider: OpenAI · Audience: Clinical informaticians, NHS digital developers and analysts working with the OpenAI API or building AI-assisted services · Listed cost: Free documentation