> When you use our non-API consumer services ChatGPT or DALL-E, we may use the data you provide us to improve our models.
It's also in the FAQ: https://help.openai.com/en/articles/6783457-chatgpt-general-...
> Will you use my conversations for training?
> Yes. Your conversations may be reviewed by our AI trainers to improve our systems.
> When you use our non-API consumer services ChatGPT or DALL-E, we may use the data you provide us to improve our models.