# Nuance Labs launches Emma, an AI video persona that reacts while users speak

> Original title: Once a talking face can hold a live conversation, timing matters more than how real it looks.

- Source: Rohan Paul
- Published: 2026-11-09T19:57:15.000Z
- Bad Influence: https://badinfluence.news/items/lip96b2r9m3yhx89amypqu5c6
- Original: https://x.com/rohanpaul_ai/status/2119882028799918578

## Summary

Nuance Labs launched Emma, an AI video persona whose reply timing matched real human speakers 89% of the time. Emma runs on Nuplex 1.0, a full-duplex audiovisual model that listens and speaks at once, so her face reacts while the user is still talking. Her face and voice come from a real actress who recorded how she listens, reacts and speaks for the model.

## Why it matters

The source details the timing measure and how a real actress's recorded reactions shaped the persona, showing how the product works beyond its realistic appearance.

## Post

Once a talking face can hold a live conversation, timing matters more than how real it looks.

Nuance Labs launched Emma, an AI video persona whose reply timing matched real human speakers 89% of the time.

She runs on Nuplex 1.0, a full-duplex audiovisual model that listens and speaks at once, so her face reacts while you’re still talking.

A very interesting part is that Emma’s face and voice come from a real actress who worked with Nuance Labs to record how she actually listens, reacts and speaks, then fed into their Nuplex model.

The result is a set of mannerisms that belong to one character.

A long blink for emphasis.
A squint.
Eyes that drift away and come back.
A small jump when she can’t hold back how strongly she feels.
A head that moves with the sentence.

[Video](https://badinfluence.news/api/img-proxy?u=https%3A%2F%2Fpbs.twimg.com%2Famplify_video_thumb%2F2119881942590234624%2Fimg%2FhRpBzH6pDKkddGoc.jpg&mode=thumb&exp=1794528000&sig=ba9d3eb484031b4c)

## Quoted post @fangchangma

> The first AI persona you’ll actually want to meet face-to-face.
> 
> Most AI personas stare blankly while you talk. Emma reacts while you’re still speaking.
> 
> After 18 months of research at @nuance_ai, this is Emma, built on Nuplex, our full-duplex audiovisual foundation model.

https://x.com/fangchangma/status/2119852363494371466