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OpenAI releases GPT-5.5 prompting guide emphasizing outcome-oriented instructions over process-heavy prompts
Hacker News · April 30, 2026
AI Summary
- •OpenAI published guidance on prompting GPT-5.5, recommending that prompts define the target outcome and constraints while allowing the model to choose its solution path, in contrast to older prompts that over-specified procedural steps.
- •GPT-5.5's default style is efficient and task-oriented; for conversational products, users should define both personality (tone, warmth, directness) and collaboration style (when to ask questions, how proactive to be) separately, keeping both blocks short.
- •For streaming applications where users notice delays before visible responses, prompts should instruct the model to emit a short preamble acknowledging the request and stating the first step before making tool calls or running multi-step agent workflows.
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