Completion API

It is one of the GPT API of OpenAI. The documentation can be found here: https://platform.openai.com/docs/guides/gpt/completions-api. It is used to complete a prompt by adding or inserting text.

Here is a code example

import openai

response = openai.Completion.create(
  model="text-davinci-003",
  prompt="Write a tagline for an ice cream shop."
)