Krex AI

Generation language

Default language for AI-written scripts, TTS voiceovers, and captions. You can still override per-job.

All docsBrand & avatars

Voice Library

Pick from a catalog of natural text-to-speech voices, or clone your own from a short sample, to drive talking-head and voiceover renders.

The Voice Library sets the voice for your narration. Choose a ready-made voice or clone your own, and it drives every talking-head and voiceover render.

What it does

You can browse a catalog of natural text-to-speech voices for narration, or clone your own voice from a short sample. The voice you select becomes the default for talking-head ads and voiceovers, so your renders sound consistent. Cloned voices let your content carry your actual voice without recording each script.

How to use it

  1. Open the Voice Library from My Brand.
  2. Preview voices in the catalog and pick one that fits your brand.
  3. To use your own voice, record or upload a short clean sample to clone.
  4. Save your selected or cloned voice to your brand.
  5. Build a talking-head or voiceover render — it uses the selected voice automatically.

Tips

  • Preview a few voices against your script before committing — tone matters more than you'd expect.
  • For cloning, use a short sample with clear speech and no background noise.
  • Match the voice to your audience: warmer for lifestyle, crisper for tech.
  • Pair a cloned voice with a Personal Clone so renders both look and sound like you.

Ready to pick a voice? get started, or link it to a Personal Clone.