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Cartesia
Fastest and most realistic real-time voice AI API with sub-100ms latency
Cartesia is a freemium voice-native application in Developer Tools. Available on Web. Key voice features include Voice Responses/TTS, Conversational AI.
About
Voice AI API delivering the fastest and most realistic speech synthesis with sub-100ms time-to-first-audio. Features Sonic model for lifelike TTS, voice cloning, emotion control, and streaming capabilities for building real-time voice applications.
Voice Features
Voice Responses/TTSConversational AI
Platforms
Web
Tags
#tts api#voice synthesis#low latency#real-time
Free tier; Growth $0.035/1K chars
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- Listed
- Feb 17, 2026