Sub-100ms voice synthesis API for building responsive conversational AI products.
How Cartesia Voice compares with its closest alternatives
4 of the 5 closest alternatives have a free plan; Cartesia Voice does not. All 5 offer an API, as Cartesia Voice does. Cartesia Voice was founded in 2023; the alternatives were founded between 2018 and 2023, 4 of them earlier. Cartesia Voice is based in San Francisco, United States; 3 of the 4 alternatives with a known headquarters are in the United States too, and the others in the United Kingdom.
Market position · Voice
How Cartesia Voice compares in Voice
Cartesia Voice has high opportunity and sits in the top third of 294 live Voice tools on FalcoScan. Across Voice, the average opportunity score is 66.1 and the average saturation score 41.3. FalcoScan rates Cartesia Voice's own market position as open. 92 of the 294 operating Voice tools have hot momentum, and FalcoScan has recorded 11 shutdowns in the category.
Cartesia Voice compared with its closest alternatives
The closest alternatives to Cartesia Voice that are still running, matched on the AI capabilities, uses and audience they share, are ElevenLabs Conversational, Livekit Voice Agents, Azure Cognitive Speech, Krisp Pro Meetings, and Retell AI Agents.
Is Cartesia Voice still running?
Yes. As of 18 October 2026, FalcoScan lists Cartesia Voice as operating at cartesia.ai.
Where is Cartesia Voice based?
Cartesia Voice is headquartered in San Francisco, United States.
Does Cartesia Voice have an API?
Yes. Cartesia Voice offers an API.
Who is Cartesia Voice for?
Cartesia Voice is built for developers and businesses.
How do I sign in to Cartesia Voice?
Sign in on Cartesia Voice's own website, cartesia.ai. FalcoScan reviews Cartesia Voice but does not run its accounts, so logins, passwords and billing are handled by Cartesia Voice directly.