Do models learn from API calls?

Is the model altered at all from API calls? Or are API calls totally separate? And is this the same for chatgpt or does the model learn from that?

From OpenAI,

“OpenAI does not use data submitted to and generated by our API to train OpenAI models or improve OpenAI’s service offering. In order to support the continuous improvement of our models, you can fill out this form to opt-in to share your data with us.”