GPT-5 PROMPTING GUIDE

Summary from the TLDR AI newsletter

OpenAI's GPT-5 prompting guide reveals a new verbosity API parameter that controls response length independently of reasoning depth, plus a Responses API that persists reasoning context between tool calls. The guide suggests the "minimal reasoning effort" path for latency-sensitive applications, and shows GPT-5 excels as its own meta-prompter - with users successfully deploying prompt revisions generated by asking the model how to fix unsuccessful prompts