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How Cresta uses Cartesia

As published on cartesia.ai, March 2025. Captured by usedby on Oct 8, 2026.

What happened

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.

From the page. cartesia.ai, captured Oct 8, 2026

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, Cresta. Source, captured Oct 8, 2026

What the story claims, and what we checked

We compared the story with its live page on Oct 8, 2026.

  • The passage quoted aboveCheckedCopied word for word from the page, near the name of Cresta.
  • The publication dateCheckedRead from the page’s own metadata, never guessed.
  • Cresta uses CartesiaCheckedConfirmed line. Latest check across sources: Oct 8, 2026.
  • The result itselfNot checkedWe quote it; we did not measure it.

Same company, same tool or same industry.

40%“Cresta increased its contracted CodeRabbit seats by 40%, from 150 to 210 Enterprise seats, within four months.”Cresta uses CodeRabbit. Another tool at Cresta97%“97% faster resolutions and nearly 2x CSAT scores achieved for customers”Lorikeet uses Cartesia. Another customer of Cartesia2-3x“Cartesia’s Time-to-First-Audio (TTFA) is 2-3x faster than the next best provider on Retell’s platform.”Retell uses Cartesia. Another customer of Cartesia