Your all-in-one AI companion for learning from video
Free
- Bilingual subtitles for YouTube & Bilibili
- Article view and subtitle search
- Bilingual page translation (free Microsoft / Google engines)
- 200,000 Lumi AI tokens on signup
- 7-day Lite Pro welcome trial for new users
- Up to 50 watch-history entries
- Upload up to 20 note screenshots after sign-in
- Custom subtitle style and prompts
- Bring your own model API key
Pro
Everything in Free
- AI models
- Match and sync YouTube subtitles when Bilibili has none
- 10,000,000 Lumi AI tokens per month
- Lumi AI, no key setup
- Page translation with Lumi AI in multiple languages
- Unlimited watch history
- Sync history & preferences across devices
- Unlimited note screenshot uploads
- Priority access to future features
Video caption pack
One-time purchase, valid for 365 days after redemption, and shareable across videos.
30 hours of video ASR
Token packs
Light pack
3,000,000 tokens
Study pack
8,000,000 tokens
Heavy pack
20,000,000 tokens
Frequently asked questions
Is Free enough?+–
For occasional videos, subtitles, and a few summaries, yes. Free accounts receive 200,000 tokens. After that, upgrade to Pro or use your own model API key.
How many tokens do Free and Pro include?+–
Free accounts receive 200,000 tokens once, and Pro receives 10,000,000 tokens each calendar month. Pro tokens reset monthly; token pack balances last until used.
Who can translate web pages with Lumi AI?+–
Lumi AI page translation is Pro only (not included in the Lite Pro trial). It translates into Simplified Chinese, Traditional Chinese, English, Japanese, and Korean. Free users can translate pages with the free Microsoft and Google engines or their own API key.
How do I upgrade to Pro?+–
Complete purchase on the pricing page, copy the delivered code, then redeem it while signed in to Lumi. Membership status, Lumi AI quota, and sync features activate after redemption.
What syncs after signing in?+–
Watch history and preferences sync, and the extension shows membership status, AI quota, and Lumi AI availability.