Twitch now lets streamers block Amazon from using their broadcasts, clips, and other channel content to train generative AI. However, it's opt out, so here's how to do that. The Amazon-owned streaming service announced the AI training opt-out on August 12. Users can find it under Security and Privacy in Twitch account settings, where it's labeled "Training for Generative AI."

Turning off the setting prevents Amazon from using a channel's streams, videos on demand, clips, highlights, chat, text, and images to train future models. Twitch says the opt-out covers Amazon models that generate or synthesize text, audio, images, or video. The setting applies only to future training. Twitch hasn't said whether Amazon has already trained models with content from the platform or whether opting out affects material used before the change.

Viewers also can't control how their messages are handled when they chat in someone else's stream. Opting out of generative AI training won't stop Twitch from using AI for other parts of the service, such as captions, recommendations, sponsorship tools, and safety systems like Auto Mod. Twitch says its other AI tools don't retain channel content to train models that produce new material.

To opt out: sign in, open Settings, select Security and Privacy, scroll to Training for Generative AI, and turn off the setting. The announcement doesn't name the Amazon models that could use the content or whether training has begun.