X ban using its content or API to fine-tune or train large AI models

In the Reverse Engineering and other Restrictions of use, X’s developer terms strictly banned using the X API or X Content to fine-tune or train a foundation or frontier model.

By restricting access to the data, X was likely aiming to protect the competitive value of the tweets ensuring that only the company could use X’s content for developing and fine-tuning their own AI models. X could also potentially monetize its user-generated data through exclusive deals with chosen partners.