---
title: "Can I Integrate ChatGPT with Chatfuel?"
description: "You don't need to — ChatGPT is already built in. Fuely AI, Chatfuel's AI assistant, runs on OpenAI's GPT-5.2 model."
canonical_url: https://chatfuel.com/docs/ai-features/can-i-integrate-chatgpt-with-chatfuel
markdown_url: https://chatfuel.com/docs/ai-features/can-i-integrate-chatgpt-with-chatfuel.md
last_updated: 2026-03-10
lang: en
site: https://chatfuel.com/docs
llms_txt: https://chatfuel.com/llms.txt
---

# Can I Integrate ChatGPT with Chatfuel?

You don't need to — ChatGPT is already built in. Fuely AI, Chatfuel's AI assistant, runs on OpenAI's GPT-5.2 model.

You don't need to — ChatGPT is already built in. [Fuely AI](https://chatfuel.com/docs/ai-features/what-is-fuely-ai), Chatfuel's AI assistant, runs on OpenAI's GPT-5.2 model. Every conversation your customers have with the bot is already powered by the same technology behind ChatGPT.

## What this means for you [#what-this-means-for-you]

* You get the full power of GPT without any extra setup or integration.
* Chatfuel handles the AI infrastructure — model access, prompt management, and response generation — so you can focus on your [Knowledge Base](https://chatfuel.com/docs/ai-features/how-to-set-up-knowledge-base) and business rules.
* There is no option to plug in your own OpenAI API key. Chatfuel manages the connection to ensure reliability, safety, and optimized performance for messaging use cases.

## What if I want to connect an external API? [#what-if-i-want-to-connect-an-external-api]

If your use case requires calling a custom backend, CRM, or any third-party service during a conversation, you can use the [JSON API plugin](https://chatfuel.com/docs/integrations/how-to-integrate-with-json-api). It lets you send and receive data from external endpoints inside your flows.

## Quick summary [#quick-summary]

| Question                                   | Answer                                      |
| ------------------------------------------ | ------------------------------------------- |
| Does Chatfuel use ChatGPT?                 | Yes — Fuely AI runs on GPT-5.2              |
| Do I need to integrate ChatGPT separately? | No — it's already built in                  |
| Can I use my own OpenAI API key?           | No — Chatfuel manages the AI infrastructure |
| Can I connect other external services?     | Yes — via the JSON API plugin               |