The use case: how Bolna deploys Cartesia
Bolna runs a platform for deploying conversational voice agents across Indian languages, and it integrated Cartesia's Sonic text-to-speech to improve multilingual voice quality and keep latency low in a high-volume customer support automation system for a large enterprise customer.
More reported results
Figures published in Cartesia’s case study. They are not independently measured by usedby.
Bolna handles 500,000+ voice calls a day, helping companies deploy conversational voice agents across Indian languages.
Other AI tools used by Bolna
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Explore Bolna’s AI stack
Cartesia users in Artificial Intelligence
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EliseAIConfirmedGo 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
- Feb 10, 2026
- Last checked
- Nov 11, 2026
Open source capture What the story claims, and what we checked
What we compared with the page.
- The figure: ~40%Checked
Printed word for word on the page, near the name of Bolna.
- The passage quoted aboveChecked
Copied word for word from the page, near the name of Bolna.
- The publication dateChecked
Read from the page’s own metadata, never guessed.
- Bolna uses CartesiaChecked
Confirmed line.
- The result itselfNot checked
We quote it; we did not measure it.
Since deploying Cartesia in production, Bolna has seen clear operational and customer-facing improvements: