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Text generation (Chat Completions and Completions)
How can I use the Chat Completion (ChatGPT) API?
How can I use the Chat Completion (ChatGPT) API?

Learn how to get started with the OpenAI Chat Completions API (sometimes called the ChatGPT API)

Updated over a week ago

Please visit our developer text generation guide for details for how to use the Chat Completions API. If you want to get started with your first API request to the Chat Completions API, head to our developer quickstart.

Is fine-tuning available for gpt-3.5-turbo?

Yes! Please review the fine-tuning guide for more details.

Does OpenAI store the data that is passed into the API?

As of March 1st, 2023, we retain customer API data for 30 days but no longer use customer data sent via the API to improve our models. You can learn more in our data usage policy.

How do I keep the Chat session focused on a topic?

The main way to keep the conversation focused on a topic is the system message. You can learn more about the system message in our text generation guide.

What's the rate limits for the Chat Completions API?

The rate limit for the Chat Completions API depends on what model you are using. Head to our rate limits guide or your limits page for details on the limits.

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