Voice model

Try Colab

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Google Colab is a free Google service that lends you a GPU to run the AI voice model. The catch: each Google account only gets a few hours of GPU time per day.

Requirements

  • The Neko Dub extension installed.
  • A Google account signed in to your browser.

How it works

Nothing to set up. Neko Dub opens a Colab tab and handles everything, which takes about 3–5 minutes.

The extension preparing the Colab server
Neko Dub setup card on YouTube while Colab connects to a T4 GPU

The extension preparing the Colab server
The Colab tab, ready to use
Colab tab with the Setup Server panel showing Success! OmniVoice is ready

The Colab tab, ready to use

  • Keep the Colab tab open while you watch, so you don’t wait for setup again.
  • Daily limit: each Google account gets a few hours of free GPU time per day. When it runs out, switch to another Google account: this fixes most Colab errors.

Don’t want to wait? Set up Modal or run it on your GPU.

Common errors

Daily GPU limit reached

Click Switch account & retry. If it says there’s no other Google account, click Add Google account to sign in with one, or wait about 24 hours.

Out of GPU time: click Switch account & retry
Setup Server panel showing T4 GPU option not found with a Switch account & retry button

Out of GPU time: click Switch account & retry

FAQ

Is Colab free?

Yes. Each Google account gets a few hours of free T4 GPU time per day.

Why do I have to wait 3–5 minutes?

Natural-sounding AI voices usually come from paid services like Google, Microsoft or ElevenLabs, and they get expensive fast when you dub whole videos. Neko Dub runs an open-source voice model (OmniVoice) on a free Colab GPU instead, and automates the whole setup for you.

Those 3–5 minutes are Colab starting a GPU machine, then downloading and loading the model. Colab gives you a fresh machine each time, so this repeats whenever you open a new Colab tab. Keep the tab open and you only wait once. To skip the wait entirely, set up Modal.