Custom GPT definition
A custom GPT is a version of ChatGPT configured for a particular purpose. It may include custom instructions, a name, a description, starter prompts, files, and sometimes actions that connect to outside services.
- A regular ChatGPT chat starts from your prompt each time.
- A custom GPT starts with prepared instructions and a narrower intended workflow.
- A public custom GPT can be shared and discovered by other users.
When a custom GPT is useful
Custom GPTs are useful when you repeat the same kind of request often or want a guided starting point. Examples include writing feedback, lesson planning, coding help, trip planning, spreadsheet cleanup, and interview practice.
- Use one for repeat tasks with similar inputs and outputs.
- Use one when prompt starters help you get to a useful answer faster.
- Use normal ChatGPT when the task is one-off, private, or too undefined for a specialized assistant.
How to create or publish a custom GPT
If your ChatGPT plan supports GPT creation, you can use the GPT builder to name the GPT, write instructions, add conversation starters, test responses, and choose sharing settings. A strong GPT starts with a narrow use case and realistic examples.
- Define the audience and the job before writing instructions.
- Add prompt starters that demonstrate real workflows.
- Test with messy inputs, not only ideal examples, before sharing the GPT.