Real-time text-to-speech API with natural AI voices, laughter, and emotion in 40+ languages — built for AI agents and interactive apps.
About Cartesia
Cartesia provides Sonic-3, a real-time streaming text-to-speech API that generates natural, expressive voices with AI-powered laughter and emotion. Supporting 40+ languages, it's designed for AI agents, interactive apps, and any application that needs lifelike voice synthesis with low latency.
Pricing model: Freemium
Features
- Streaming TTS API (Sonic-3)
- AI laughter and emotion
- 40+ languages
- Built for AI agents and interactive apps
FAQs
Common questions about Cartesia
What is Cartesia Sonic-3?
Sonic-3 is Cartesia's streaming text-to-speech API that generates natural voices with laughter and emotion in 40+ languages.
Is Cartesia free?
Cartesia offers a freemium model — check their site for current pricing and free tier limits.
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The people behind Cartesia
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