# How Tavus uses Cartesia

**less than 1 second**: “The CVI now operates with less than 1 second end-to-end latency”

As published on [cartesia.ai](https://www.cartesia.ai/customers/tavus), October 2024. Captured by usedby on 2026-10-08.

- Company: [Tavus](https://www.usedby.ai/companies/tavus.md)
- Tool: [Cartesia](https://www.usedby.ai/tools/cartesia.md)
- Industry: [Artificial Intelligence](https://www.usedby.ai/companies/industry/artificial-intelligence.md)

## What the story says

Tavus uses Cartesia's Sonic model as the voice generation layer of its Conversational Video Interface, which lets AI digital twins hold real-time video conversations. It also uses Sonic's voice cloning and design features to create a distinct voice for each AI replica.

Summary written by usedby from the source page, in English. The figures are those of Cartesia and Tavus, not ours.

> Ultra-Low Latency: Sonic’s sub-90 ms latency enables Tavus to achieve end-to-end response times of less than 1 second, creating truly conversational experiences.

- **sub-90ms**: “Cartesia’s Sonic model, with its consistent sub-90ms latency, has enabled Tavus to simplify their infrastructure while meeting their stringent performance requirements.”

> Cartesia’s Sonic model is a game-changer for our Conversational Video Interface. Its ultra-low latency of 90ms and high-quality voice generation have enabled us to create truly immersive real-time conversations with AI digital twins. The natural voices and voice design capabilities have elevated our product to new heights.
>
> Hassaan Raza, Co-Founder and CEO, Tavus

## What usedby checked

We compared the story with its live page on 2026-10-08.

- Checked: the figure less than 1 second is printed word for word on the page, near the name of Tavus.
- Checked: the passage quoted above is copied word for word from the page, near the name of Tavus.
- Checked: the publication date is read from the page’s own metadata, never guessed.
- Checked: Tavus uses Cartesia. Confirmed line. Latest check across sources: 2026-10-08.
- Not checked: the result itself. We quote it; we did not measure it.

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Source: https://www.usedby.ai/case-studies/tavus-cartesia · How we check: https://www.usedby.ai/methodology