# How Cresta uses Cartesia

As published on [cartesia.ai](https://www.cartesia.ai/customers/cresta), March 2025. Captured by usedby on 2026-10-08.

- Company: [Cresta](https://www.usedby.ai/companies/cresta.md)
- Tool: [Cartesia](https://www.usedby.ai/tools/cartesia.md)
- Industry: [Sales Tech & CRM](https://www.usedby.ai/companies/industry/sales-tech-crm.md)

## What the story says

Cresta, a contact center AI vendor, uses Cartesia's Sonic voice API to power the speech of its AI Agent virtual agent. This is intended to give customers natural-sounding voice conversations that handle complex, multi-step workflows.

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

> Using Cartesia’s generative voice API, Sonic, we’ve strengthened Cresta AI Agent to move beyond rigid scripts and towards delivering empathetic, human-like conversations that accurately represent customer brands and their commitment to excellent customer service.

> Using Cartesia’s generative voice API, Sonic, we’ve strengthened Cresta AI Agent to move beyond rigid scripts and towards delivering empathetic, human-like conversations that accurately represent customer brands and their commitment to excellent customer service.
>
> Tim Shi, Co-Founder & Chief Technology Officer at Cresta

## What usedby checked

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

- Checked: the passage quoted above is copied word for word from the page, near the name of Cresta.
- Checked: the publication date is read from the page’s own metadata, never guessed.
- Checked: Cresta 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/cresta-cartesia · How we check: https://www.usedby.ai/methodology