Free for everyone.
$3 for the server.

Local processing is free forever. Pro covers the cost of running the AI backend and keeps the project alive.

Free

$0

Forever.

  • · Spectral mode (real-time, good quality)
  • · Basic mode (real-time, fast)
  • · Works on every site that plays audio
  • · No account required
Install free
Pro

Pro

$3/month

Or $25/year (save 30%).

  • · Everything in Free
  • · AI Separation (Demucs, ~5s latency)
  • · AI Deep Clean (highest quality, ~10s)
  • · Funds the GPU backend and the project
  • · Cancel anytime, refund within 14 days
Subscribe — coming soon

Questions

Why is there a paid tier at all?
The AI modes (Demucs) need a real GPU/CPU server to process audio. Pro pays for that server and keeps it running for everyone who needs the best quality.
Is the free version time-limited?
No. Spectral and Basic modes are free forever — they run entirely in your browser and cost us nothing.
Can I self-host the backend?
Yes. Karafilt is AGPL-3.0. You can run the Python backend yourself and point the extension at it via Server URL in settings.
How do I cancel?
From your account page, one click. Pro stays active until the end of your billing period.