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.
In the customer’s words
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.Other AI tools used by Thoughtly
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Based on Cartesia’s published case study. We check the public evidence; the results are reported by the vendor.
cartesia.ai- Source published
- Mar 11, 2026
- Last checked
- Oct 8, 2026
Open source capture What the story claims, and what we checked
What we compared with the page.
- The figure: 15xChecked
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- The passage quoted aboveChecked
Copied word for word from the page, near the name of Thoughtly.
- The publication dateChecked
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- Thoughtly uses CartesiaChecked
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- The result itselfNot checked
We quote it; we did not measure it.
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.