Choose the voice engine: Chatterbox or Qwen3-TTS

Applies to 0.11Updated 2 Nov 20262 min read

Chatterbox is built in. To try Qwen3-TTS, install it from Settings › AI components, then choose it under Voice engine on the Voice step.

Voiceover Studio reads your voice sample with one of two engines. Chatterbox is built in. Qwen3-TTS 1.7B is an optional second engine you can install and compare with your own voice.

Install Qwen3-TTS

1. Open Settings › AI components.
2. Find Second voice engine (Qwen3-TTS 1.7B) and press Install. It is a 3.1 GB download and stays on your Mac.

Choose the engine

• In Voiceover Studio, the Voice step has a Voice engine card: Chatterbox (built in) or Qwen3-TTS 1.7B.
• In Settings › AI components, Voice engine for new voiceovers sets the engine new voiceovers and dubs start with. Your last choice on the Voice step sets it too.

How they differ

• Chatterbox: 23 languages, and it reads the stress marks in your script.
• Qwen3-TTS: 10 languages (Russian, English, German, French, Spanish, Italian, Portuguese, Chinese, Japanese and Korean). It reads without stress marks; they are taken out for it automatically. In our tests it was about as fast, with a slightly slower pace and a little less like the sample.

Good to know

• Everything a voiceover makes keeps the engine it started with: its parts, Redo This Part, a redo from the timeline, the final file and its dubs.
• Only one engine is in memory at a time. Switching lets the other one go.
• For a language Qwen3-TTS does not speak, the app uses Chatterbox and tells you.