The use case: how 2X Solutions deploys Cartesia
2X Solutions runs voice AI agents that handle high-volume outbound and inbound customer calls, including qualifying and booking. It uses Cartesia's streaming text-to-speech and voice cloning for low-latency, natural-sounding voices that keep outbound calls within TCPA compliance limits.
More reported results
Figures published in Cartesia’s case study. They are not independently measured by usedby.
Latency reduced from 500-900ms to sub-100ms — providing substantial headroom within the two-second TCPA compliance window
The result: a 3-5% lift in callback rates across their customer base compared to generic voicemails.
Combined with a pre-call texting strategy that alerts prospects 3-5 minutes before the call, 2X sees a 7-15% increase in connected calls overall.
2X handles approximately 130,000 calls per day — nearly 3 million per month — and is growing at 10% monthly.
In the customer’s words
When we switched to Cartesia, we were below the TCPA 3% fairly substantially — we were at like one and a quarter percent.Cartesia users in Artificial Intelligence
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Go straight to the source
Based on Cartesia’s published case study. We check the public evidence; the results are reported by the vendor.
cartesia.ai- Source published
- Mar 31, 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: under 1.25%Checked
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- The passage quoted aboveChecked
Copied word for word from the page, near the name of 2X Solutions.
- The publication dateChecked
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- 2X Solutions uses CartesiaChecked
Confirmed line.
- The result itselfNot checked
We quote it; we did not measure it.
With Cartesia, latency dropped to sub-100ms and the abandoned call rate was slashed from 3.4% to under 1.25%. Cartesia’s low-latency streaming delivers audio the moment a recipient answers, keeping 2X’s platform well within the two-second window at scale