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Cartesia

Real-time AI voice with millisecond latency

4.7(23 reviews)usage-based
api accessfree tier

AI voice API delivering human-quality speech with sub-100ms latency, purpose-built for real-time conversational applications.

Pros

  • Sub-100ms latency
  • Natural emotional voice
  • Real-time streaming API

Cons

  • API-only — developer tool
  • Usage-based pricing

Best For

Developers building real-time conversational AI applications where latency matters

Pricing

Starter

Free
  • Core features
  • Email support

Compare with alternatives:

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