The AI-voice marble races on TikTok, Shorts and Reels - now yours to make. Drop any song, give each marble a voice, and whoever’s leading sings. Renders in your browser in about a minute. No editing, ever.
Real renders, straight from the engine - whoever leads is singing.
Every other marble tool gives you a race and leaves the music to you. RaceCut listens first - beats, sections, the chorus - then builds a race that lands on them.
Upload an MP3 or paste a cover link. Pick the exact section on a waveform - 15, 30 or 60 seconds.
Names, colours, and an AI voice for each. Whoever leads is singing, and the voices hand off exactly when the marbles overtake. Fair - or rig the winner.
It renders right in your browser - nothing uploaded, no queue. Download the 1080p MP4 and post it to TikTok, Shorts or Reels.
Each marble is a different AI cover of the same song. Whoever leads is who you hear. Camera follows the leader - so does the audio.
Named marbles, one song, a winner reveal on the drop. Fair by seed, or rig it and let the comments fight.
Last place gets knocked out every section change. One survivor at the outro, on the beat.
“Top 10” countdowns - marbles finish in the order you set, one per lyric line.
Marbles hit bars that play the vocal line, transcribed from the stems. The satisfying one.
Persistent characters, standings and leaderboards across episodes - the reason people follow the channel.
RaceCut is built for people who post every day - the stuff that comes after “export” is the product.
One song × ten courses, or ten songs × one course. A week of content from one job.
“Every day at 6pm, race my newest covers and post to TikTok.” Set it, check the numbers.
Your logo, colours, intro/outro cards, fonts and hook-text presets on every export.
Same race, three hooks, three thumbnails. Post them all, keep the winner.
Connected TikTok, Shorts and Reels accounts. Schedule from RaceCut, no downloads.
For agencies running twenty faceless channels. Race spec in, MP4 URL out.
No. Upload any track and go. If you already have AI covers, paste the link and they arrive with names and avatars attached - no re-uploading.
Your call. Fair races are seeded and reproducible. Rigged races let you pick the winner or the whole finishing order, and RaceCut finds a physics run that produces it. Nothing is faked in post.
Yes - the same simulation and renderer run in your browser and on our render servers, frame for frame. Free renders happen on your device; paid plans render on GPUs so you can batch.
You're responsible for the audio you upload, same as any editor. Cleared library tracks and your own covers are the safest path, and direct posting follows each platform's commercial-music rules where they apply.
TikTok, YouTube Shorts and Instagram Reels at launch, scheduled from RaceCut. You can always just download the MP4.
Still have a question? Join our Discord →
No queue, no subscription needed. Drop a song, pick your voices, hit go, and the race renders in your browser.
Works in your browser - desktop is best. $1 first month, then $24.99/mo, cancel any time.