Last updated: June 9, 2026
Privacy policy
Lumi is a video learning companion for Bilibili and YouTube. We process only what a feature you asked for needs. We do not sell it, and we do not use it for ads.
What we process
When you use subtitles, summaries, chat, or ASR, Lumi may handle the title, captions, page URL, and related context. Preferences, styles, and API keys you paste stay in this browser by default.
Accounts and sync
After you sign in we keep a session and sync non-secret preferences, watch progress, library membership, and quota. BYOK API keys are not uploaded.
AI services
When you trigger an AI feature, the relevant text goes to the model source you chose: Lumi AI or the provider behind your own key. That provider processes it under its own terms.
Contact
For privacy questions, use the contact entry on the website.