Pro AI clips for $5/month

Paste a YouTube link and get vertical clips with captions and a virality score, ready to download.

No credit card needed

Works with

See it in action

One long video goes in. Clips with captions come out.

1
Paste your link
Drop in a YouTube link, or upload a video up to 30 minutes long.
2
We find the best moments
AI picks 5–10 moments, cuts them to vertical 9:16 and adds captions.
3
Download your clips
Each clip gets a virality score, so you can post the strongest ones first.

Paste a link and Onyx finds the moments worth posting, cuts them to vertical, adds captions and tells you which ones should do best.

Try telling the AI what to find:

Find a specific moment
Tell the AI what you're after, like “the money advice” or “the funniest stories”, and it looks for those moments first.
Virality score with a reason
Every clip gets a score out of 100 and one plain sentence on why it should work, so you know what to post first.
Captions that pop
Captions timed to every word, in 5 styles: from bold with the spoken word lit up, to plain and quiet.
Smart framing
Face tracking follows the speaker. Split screen puts a facecam over the action, and Fit shows the whole picture on a blurred background.
Remove pauses
Long silences between words are cut down to a short breath, and the captions stay in sync.
Paste a link or upload
YouTube videos, finished live streams and your own video files, up to 30 minutes long.
Clips as they finish
Watch and download each clip the moment it's ready, while the rest are still being made.
Private by default
Only you can see your videos and clips, and the files delete automatically after 7 days.

We're building fast. Vote for what you want first.

Coming soon
Whop campaigns
Make clips for Whop clipping campaigns, cut exactly the way each campaign accepts them.
Coming soon
AI assistant
Get help and clipping tips in a chat, right next to your clips.
Coming soon
Templates
One-click styles: save a look you like and use it on every new video.
Coming soon
Auto-posting
Post finished clips to TikTok, Instagram Reels and YouTube Shorts.
Coming soon
Clip editor
Edit the AI's cuts, add text and music, and export to CapCut or Premiere.

Hook at the top, captions that follow the speaker, and a virality score out of 100.

Thiel Hesitates: 'Prefer the Human Race to Endure?'
74Cringey, funny hesitation with a reaction from the hosts
Guess how old I am
73Guessing game with a funny reveal and a compliment moment
Rapid-fire Spanish words
71Absurd rapid-fire word list is comedic and quick
Counting chests and feeling very lucky
71Funny overconfidence with building tension