Meta probably should have created a standalone Meta AI mobile app from the start to take on ChatGPT, Claude, Gemini, DeepSeek, and others. However, the company chose to force Meta AI on Facebook, Messenger,

The artificial intelligence tool uses the fourth iteration of Meta’s Llama model, which Meta has touted as being more cost-efficient than competitors like ChatGPT and Gemini.

Compared to the Discovery feed, the other major differences between the MEta AI app and the ChatGPT app come off as more subtle. Meta AI has a slicker voice feature, one that lets you interrupt it mid-sentence and talk over it but still be understood. ChatGPT's voice chat is more turn-based, though it will pause if you start talking again.