Primary purpose
Send a phone assistant’s reply into the speech stream and measure time to first audio on a realistic connection.
Editorial strengths
Streaming can start playback before the entire reply has been rendered.
Limitations
End-to-end latency depends on the network, model and playback buffer. The official developer reference records this API scope: “REST and WebSocket developer access”.
Who it is for
Teams building interactive voice applications.
Commercial use
Cartesia · Streaming text-to-speech API. Establish which voice, recording or music rights cover the audio you plan to release. Commercial permission is unverified for this function.
Privacy and data handling
Cartesia · Streaming text-to-speech API. Review speaker consent and recording content before supplying any audio sample. Retention, model training and deletion terms are unverified for this function.
Use case
Key features
- Streaming text-to-speech API · Fact verification
Pricing model
- Free — limits and eligibility apply · ¤0.00 · 2026-11-04
- Free and paid developer tiers; credits and agent minutes · Not verified · 2026-11-04
Official references
- Resmî ürün ve temel işlev ↗ · 2026-11-04
- Plan modeli ↗ · 2026-11-04
- API · REST and WebSocket developer access ↗ · 2026-11-04
- Official commercial-use scope/plan conditions ↗ · 2026-10-28
