Everything you build on a song,
from one API.
Align lyrics word by word. Split a mix into isolated tracks. Render a karaoke video. Built for songs with instruments, dense mixes and real singing — not just spoken speech.
One key, one prepaid balance, three products that compose: align once, then render that alignment as many ways as you need.
Try it now
10 free minutesDrop in a song and its lyrics, and Tonael returns a start and end time for every word.
Ultra adds vocal isolation — best for dense mixes.
Every result includes both — take what you need, same price.
Add a song and its lyrics to start.
Made for music, not dictation
Generic speech-to-text falls apart on singing over instruments. Tonael is built for the hard case: aligning known lyrics to real recordings.
Word — or letter
A start and end time for every word, or every single letter. Perfect for karaoke-grade highlighting and fill effects — same price.
Handles dense mixes
Tonael Ultra isolates the vocal before aligning, so it stays accurate even when the vocal sits deep in the mix.
Simple & fast
One API call. Hot results in minutes, or batch for the best price. Delivered by webhook the moment they're ready.
Alignment — two models
Pick per request. Same simple input, same word-level output. Choose hot for results in minutes, or batch to pay less when you can wait.
Tonael
Word-level lyrics alignment. The fast, everyday choice for clean vocals and most recordings.
Tonael Ultra
Vocal isolation plus alignment. Recommended for dense mixes and demanding material where accuracy matters most.
Batch waits up to 24 hours for cheaper capacity. If none opens up, the job is rejected and fully re-credited — or sent to the hot lane at the hot rate if you ask for it. See full pricing.
And two more, on the same key
Same audio in, same prepaid balance, same two speeds.
Separation
Split a mix into isolated tracks — vocals, drums, bass and other, or simply vocals and instrumental. One quality, no tier to choose between.
Karaoke video
Turn an alignment into a video: twelve looks, three frames, MP4, greenscreen, a transparent layer for your own footage, or a CD+G for karaoke hardware.
A video renders from an alignment you already have, so three formats of one song cost one alignment and three renders — not three of each. See full pricing.
How it works
Send audio + lyrics
POST your audio file and its lyrics text, and choose a model.
Tonael aligns
We match every word to the audio. Choose hot for speed or batch for the best price.
Get timestamps
Receive precise per-word timings by webhook, ready to drive your product.
Send us whatever you already have
We detect the format from the file itself, not its name — so a mislabelled file still works. Up to 3 hours and 1 GB per track, by upload or by URL.
Lossy or lossless, mono or stereo, any sample rate — we resample internally. Got something exotic? Tell us and we will add it.
Built for teams that work with lyrics
From $0.16 per song
Pay only for what you process, from prepaid credit that never expires. Every new account starts with 10 free minutes of Tonael — no card required, and 30 minutes once you add one. Ultra draws the same credit down faster; batch stretches it further.