How to opt out of Claude AI training on your chats

Anthropic now uses Claude conversations to train its AI models unless you manually opt out. The company changed its privacy policy last month, reversing its previous stance of not using chat data for training purposes.

Now that Claude 4.5 is here, the new policy affects all free and paid Claude users. Your chats and coding sessions could become training data for future models unless you turn off a specific setting. Anthropic enabled this by default, so you need to take action to protect your privacy.