Real-time, on-device voice AI with ultra-low latency. Text-to-speech and voice agents that talk back in milliseconds.
Cartesia builds state-of-the-art voice models designed for real-time use. Its streaming TTS and voice-agent APIs let products speak naturally with latency low enough for live phone and voice assistants.
Who it's for: Developers building voice agents, call centers, and conversational apps that need instant, natural speech.
Sub-100ms streaming synthesis for real-time dialogue.
Expressive, human-sounding output across accents and tones.
Models that run at the edge for privacy and speed.
Simple endpoints for TTS and voice agents.
If your product talks to users in real time, Cartesia’s latency and naturalness make it a top pick. A great ElevenLabs alternative for voice agents.