1 TB free audio storage

The exact BPM and beat grid, straight from the audio.

Upload a track and ask for its tempo. Scarleta listens to the beat and gives you the BPM, the beat times, and how steady the tempo holds, right in the chat.

Try it free

Building an app? Do this at scale with the API

How it works

No setup, no plugins. Just ask, and get the file back.

Step 1

Upload your track

Drop an audio file into the Scarleta chat: a full song, a loop, or a rehearsal recording. No plugins to install.

Step 2

Ask for the tempo

Type it in plain language: "what's the BPM?" The AI figures out which analysis to run, with no settings and no code.

Step 3

Get the BPM and beat grid

Get the detected BPM, the beat times, and how steady the tempo is, laid out as a tempo curve you can read right in the conversation.

Built-in storage

Every result is saved to your library, 1 TB free.

The files you bring and the tempo and beat grid results you get are kept in one place, so you can come back, compare earlier versions, share a link, or ask across everything you’ve stored, whenever you want.

1 TB free Share with a link Ask across your collection

Saved to your library1 TB free

Tempo and beat grid result

Ready to play, share, or reuse

Play Share Versions

Recipes

Make tempo and beat grid one step in a pipeline you run by name.

Chain it with other steps into a recipe you design once, then run on a single file in chat or on thousands at once.

DJ prep

Detect BPMExport beat gridTag files

Sync to picture

Find tempoMap beat timesExport as JSON

Catalog tagger

Batch analyzeRead steadiness scoreExport CSV

See it in action

BPM and beat grid from any track, just ask

Simple, transparent pricing

Only pay for the audio you actually process.

$0.10/ minute

1 token = 1 second of audio, minimum 1 token per job.

Prepaid, no subscription 300 free tokens to start Top up from $10

See full pricing

More than one trick

Scarleta does a whole lot more.

The same account handles all of it. Here are a few very different things you can do with your audio.

Audio library

One home for every sound you own.

Remove vocals

Vocals gone in one message.

Workflow builder

Build your pipeline once. Reuse it any time.

See everything Scarleta can do

For developers

Do this at scale with the API

Running a whole catalog? Send a batch of files to a tempo recipe and let a webhook call you back when each one is done.

curl https://api.scarleta.ai/v1/batch \
  -H "Authorization: Bearer $SCARLETA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "recipe_id": "rec_0002_tempo",
    "audio_urls": [
      "https://example.com/song.mp3"
    ]
  }'

Read the API reference & Quickstart

Know the tempo of any track

Start on your free tokens: upload a song, ask for the BPM, and read the beat grid right in the chat. Top up only when you need more.

Get started

Frequently asked questions

What do I get back?

The detected BPM, the beat times across the track, and a read on how steady the tempo is. You can see the beat on a timeline right in the chat, and export the analysis as CSV or JSON to use in your own tools.

How much does it cost?

You pay per second of audio: 1 token per second, which works out to $0.10 per minute. New accounts start with 300 free tokens, and top-ups start at $10. No subscription.

Do I need to install anything?

No. Upload a track in the Scarleta chat and ask. It runs right in your browser with nothing to download.

Can I run this on a lot of songs from my own app?

Yes. Developers can send many files at once through our API and get called back by webhook when every one is done. See the docs to get started.