GPT-5.5 prompting guide
OpenAI's official prompting guide for GPT-5.5 emphasizes it is not a drop-in replacement for GPT-5.2/5.4, requiring a fresh start in prompt engineering for optimal results.
Simon Willison · Apr 25, 2026
OpenAI's official prompting guide for GPT-5.5 emphasizes it is not a drop-in replacement for GPT-5.2/5.4, requiring a fresh start in prompt engineering for optimal results.