Guides

How the prompts on this site are built, and how to set one up in ChatGPT, Claude or Gemini.

  1. How to use the prompts on this site How the prompts on promptsource.net are built, the ways to use one in a chat app, what the bracketed slot and placeholders do, and how to trim one.
  2. What is a system prompt? What a system prompt is, how it differs from an ordinary chat message, where ChatGPT, Claude, Gemini and their APIs let you set one, and how length matters.
  3. How to use a system prompt in ChatGPT Where a long prompt fits in ChatGPT: projects, custom instructions and their limits, GPTs and their retirement, pasting into a chat, and the OpenAI API.
  4. How to use a system prompt in Claude Where a long prompt fits in Claude: project instructions and knowledge, account-wide instructions, skills, pasting into a chat, and the API system parameter.
  5. How to use a system prompt in Gemini Where a long prompt fits in Gemini: Gems and their move to skills, creating a skill, pasting into a chat, and system instructions in AI Studio and the API.