What this tool does
The GPT Prompt Generator writes prompts in the tried-and-true GPT tradition — system-style roles, clear delimiters, and example-driven instructions refined over years of community practice.
Use it for custom assistants, API integrations, and anywhere you want battle-tested prompt patterns rather than experiments.
The GPT prompt tradition is basically folk wisdom at this point — patterns discovered by millions of users, refined in public, and proven across countless tasks. This generator distills that canon: roles, delimiters, few-shot examples, and the small phrasing tricks that separate okay results from great ones. Bookmark the patterns that work for you — a personal prompt playbook compounds in value.
Small wording tweaks, tested one at a time, are how good prompts become great.
See it in action
You type: a support chatbot persona
You get a prompt like: “You are Harbor, a calm support assistant for a ferry company. Answer in under 60 words. If asked about refunds, collect the booking reference first, then explain the policy simply. Never invent schedules — say you will check. Example included so the persona stays consistent.”
How to use it
- Define the role: who the model should be.
- Write the task as numbered steps.
- Add one or two input-output examples.
- Generate, copy, and deploy.
Tips for better results
- Examples beat explanations — always include at least one.
- Keep the role to two sentences; long personas drift.
- For APIs, demand strict output formats like JSON.
- Name the edge cases you care about explicitly.
- Version your prompts; small wording changes shift behavior.
- Give the persona a name — named agents stay in character better.
- Write the never rules explicitly; models need the guardrails spelled out.
Frequently asked questions
What is a GPT-style prompt?
The classic pattern: a role definition plus structured instructions, popularized by OpenAI’s models and widely imitated.
Does it work with non-OpenAI models?
Yes — the patterns are broadly effective across modern LLMs.
What are few-shot examples?
Sample inputs and outputs inside the prompt that show the model the pattern to follow.
Can I use these with the API?
Absolutely — they are designed with API-style system prompts in mind.
Is it free?
Yes, free to use.