Custom GPT
Also: custom GPTs, GPTs
A version of ChatGPT you set up with your own instructions and files for a particular job.
The fuller definition
A custom GPT is a configured assistant within ChatGPT, combining instructions and optional knowledge or capabilities supported by the product.
- Instructions
Preferred behavior
- Knowledge
Configured reference material
- Assistant
Use within ChatGPT
A simplified relationship, not a screenshot or a complete design.
A concrete example
A user configures an assistant to follow a particular document-review format.
The distinction that matters
Creating a custom GPT is not ordinarily training a new foundation model or changing its weights.
Related terms
ChatGPT
OpenAI's chat app, built on its GPT models.
Agents & automationSkill
A reusable pack of instructions, files, or code for an AI task. It can guide work but does not guarantee a good result.
Training & generationFine-tuning
More training on a chosen set of examples. It changes a model to suit a task or style.
Where it is taught
Choose an AI tool around the work productSource and further reading
OpenAI · GPTsThe definition and example are written for this library. The link gives background, official documentation or legal authority as labelled. Legal scope depends on the jurisdiction and current text; product features depend on release and settings.