CoAI

Cartesia

Cartesia

Real-time text-to-speech and speech-to-text APIs, aimed at building voice agents.

Voice & audioAI models & APIsFree plan available
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Platforms

WebAPI

Overview

Cartesia provides text-to-speech and speech-to-text through an API. Billing is usage-based on credits and agent minutes, and every plan includes unlimited workspace seats. There is a free plan to start with; paid plans add a commercial use license and instant voice cloning, and higher tiers add pro voice cloning and higher concurrency limits.

Main features

  • Real-time text to speech
  • Speech to text
  • Voice cloning
  • Building voice agents
  • Usage-based credits and agent minutes
  • Unlimited workspace seats

Pricing

Free

Free

Published price (USD) · Source

  • 20K credits/month
  • $1 prepaid agents/month
  • Text to Speech, Speech to Text

Last verified: September 2026

Pro

$5/month

Published price (USD) · Source

  • 100K credits/month
  • $5 prepaid agents/month
  • Commercial use license
  • Instant voice cloning

Last verified: September 2026

Startup

$49/month

Published price (USD) · Source

  • 1.25M credits/month
  • $49 prepaid agents/month
  • Pro voice cloning
  • Organizations

Last verified: September 2026

Scale

$299/month

Published price (USD) · Source

  • 8M credits/month
  • $299 prepaid agents/month
  • Priority support
  • High concurrency limits

Last verified: September 2026

Cartesia publishes one price worldwide and bills in USD. There is no separate price in your local currency.

Screenshots

Cartesia official website
Cartesia official website (captured 2026-09-22)

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