> I have only seen GPT-3 used when it takes a prompt and then generates more related text

This is a fully general technique. Any repeatable problem can be rephrased as a prompt + related technique via the following structure:

  Problem: <Example of Problem>

  Solution: <Example of Solution>

  <...maybe include one or two more examples>

  Problem: <Real Problem>

  Solution: <Ask GPT-3 for the solution>