Cartesia
Free tierArchitecting AI that learns and interacts like humans — ultra-low latency voice AI
Free tier available·All audiences·Powered by Cartesia (proprietary — Sonic for TTS, Ink for STT, built on State Space Models / Mamba / H-Nets)·API available
Key strengths
#1-ranked real-time voice (Speech Arena & Speech-to-Text leaderboards)Ultra-low latency via State Space Models (SSMs/Mamba/H-Nets)Full-stack: TTS (Sonic), STT (Ink), and Managed Voice Agents in one APICloud, on-premise, and on-device deploymentVoice cloning and multi-language support
Free tier + paid plans
Self-hostable
Facts verified against cartesia.ai on
Recent changes
- Models updated: Cartesia (proprietary — Sonic for TTS, Ink for STT, built on State Space Models / Mamba / H-Nets)
Get alerts when Cartesia changes
Free. We'll email you when pricing, the free tier, API access or open-source status changes.
No ratings yet
Cartesia — Technical Use Cases
Cartesia is purpose-built for developers and enterprises requiring real-time, low-latency voice AI. Relevant technical use cases include:
- Real-time voice agents: Build and deploy managed voice agents via API with sub-second response loops enabled by SSM/Mamba/H-Net architectures
- Telephony integration: Connect voice agents to phone systems at $0.06/min + $0.014/min for Cartesia-provided numbers
- On-premise / on-device deployment: Deploy Sonic (TTS) and Ink (STT) in air-gapped environments for regulated industries (finance, healthcare, government)
- Voice cloning pipelines: Integrate custom voice cloning into speech applications via the Cartesia API
- Multi-language STT/TTS: Build globally distributed speech applications with multi-language model support
- Edge inference: Run models on-device for latency-critical or offline scenarios
Target verticals: finance, healthcare, government, retail.
Alternatives
See all alternatives