# How Thoughtly uses Cartesia

**15x** ROI achieved for Thoughtly customers

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

- Company: [Thoughtly](https://www.usedby.ai/companies/thoughtly.md)
- Tool: [Cartesia](https://www.usedby.ai/tools/cartesia.md)
- Industry: [Artificial Intelligence](https://www.usedby.ai/companies/industry/artificial-intelligence.md)
- Teams: RevOps, Growth

## The use case: how Thoughtly deploys Cartesia

Thoughtly, a conversational go-to-market platform that connects to Salesforce and HubSpot to call, qualify, and route leads, uses Cartesia's Sonic as the default voice library for all new AI voice agents. It provides low-latency speech, fast voice cloning, and expressive voice controls for live sales calls.

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

> Cartesia's models are purpose-built for real-time telephony and conversational AI — not retrofitted from offline use cases. This architectural difference showed up immediately in performance: dramatically faster voice cloning and latency, and expressive controls that previous providers couldn't match.

> As conversational voice technology matured, we realized enterprise AI calling required infrastructure purpose-built for real-time interaction. Migrating to Cartesia as our default voice library allowed us to deliver lower latency, faster cloning, and more expressive control—without sacrificing reliability at scale.
>
> Torrey Leonard, CEO, Thoughtly

Source: [cartesia.ai](https://www.cartesia.ai/customers/thoughtly), captured 2026-10-08.

## Other AI tools used by Thoughtly

- [Digits](https://www.usedby.ai/tools/digits.md) — Confirmed
- [ElevenLabs](https://www.usedby.ai/tools/elevenlabs.md) — Confirmed

## Cartesia users in Artificial Intelligence

- [2X Solutions](https://www.usedby.ai/companies/2x-solutions.md) — Confirmed
- [AimAI](https://www.usedby.ai/companies/aimai.md) — Confirmed
- [Arini](https://www.usedby.ai/companies/arini.md) — Confirmed
- [Captions](https://www.usedby.ai/companies/captions.md) — Confirmed
- [EliseAI](https://www.usedby.ai/companies/eliseai.md) — Confirmed
- [Forethought](https://www.usedby.ai/companies/forethought.md) — Confirmed

## What usedby checked

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

- Checked: the figure 15x is on the page; its label is our wording.
- Checked: the passage quoted above is copied word for word from the page, near the name of Thoughtly.
- Checked: the publication date is read from the page’s own metadata, never guessed.
- Checked: Thoughtly uses Cartesia. Confirmed line. Latest check across sources: 2026-10-18.
- Not checked: the result itself. We quote it; we did not measure it.

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