Cartesia AI logo

Cartesia AI

Cartesia provides fast AI speech models for text-to-speech, transcription and voice agents through a single API.

PricingFreemium
Free planYes
UrduLimited / no

Best for: Developers building real-time voice apps

Visit Cartesia AI

Cartesia builds real-time voice models. Its Sonic model turns text into speech, Ink handles speech-to-text, and a managed agents product helps teams run production voice agents.

All of this is available through one API that is quick enough for live conversation. The company offers a range of voices and languages and targets industries such as finance, healthcare and government. There is a way to try it before contacting sales.

Key features

  • Sonic text-to-speech
  • Ink speech-to-text
  • Managed voice agents
  • Single API
  • Low-latency responses

Prices and features change often; check the official website for the latest plans. Last updated September 24, 2026.

Alternatives

FastScribe
Freemium · free plan
Phonic
Paid
Botphonic
Paid
Lalals
Freemium · free plan
MakeSong-AI
Freemium · free plan
Callbooker
Freemium · free plan