GPT-5.5 prompting guide

GPT-5.5 prompting guide summarizes practical tips for the new model. A key pattern is to send a brief user-visible update before multi-step tool calls, making long tasks feel responsive. It also covers migration and guidance to start from a fresh baseline and tune prompts and output formats for GPT-5.5.

Source

Simon Willison

Ingested

APR 25, 2026 · 19:10

Editorial score

4.0 / 5