Cartesia

What is Cartesia AI

Cartesia AI is a voice AI platform for building ultra-realistic, interactive voice experiences. It provides developers with tools for real-time AI voices, voice cloning, and voice infilling, powered by the low-latency, high-quality Sonic model. Built for conversational agents and interactive voice apps, Cartesia delivers natural prosody and best-in-class pronunciations with native speech in 15 languages. With seamless integrations for Twilio, Pipecat, LiveKit, and Rasa, it helps teams ship responsive voice interfaces that run wherever users are.

Cartesia AI Main Features

• Sonic model for low-latency speech: Generates high-quality, natural speech optimized for interactive, real-time conversations.
• Real-time voice generation: Stream audio with minimal delay for responsive agents, IVR flows, and live voice apps.
• Voice cloning: Create custom voices (with proper consent) to match brand identity or replicate a specific vocal style.
• Voice infilling: Fill gaps, correct words, or refine segments in generated audio without re-synthesizing entire passages.
• Multilingual support: Native speech in 15 languages with clear pronunciations and natural prosody.
• Production-ready integrations: Works with Twilio, Pipecat, LiveKit, and Rasa to plug into telephony, RTC, and conversational AI stacks.
• Developer-friendly tooling: APIs and integration guides that simplify building and scaling voice agents.

Who Should Use Cartesia AI

Cartesia AI suits teams building real-time voice agents, contact center automation, and IVR systems; product and platform engineers who need low-latency speech in mobile or web apps; conversational AI teams using Rasa; RTC and telephony builders on Twilio, Pipecat, or LiveKit; and creators who require consistent, branded voices across multilingual experiences.

How to Use Cartesia AI

1. Set up a developer account and obtain API credentials for secure access.
2. Choose a base voice or provide approved data to configure a compliant voice clone.
3. Integrate the real-time streaming API into your app or agent framework.
4. Connect with Twilio, Pipecat, LiveKit, or Rasa to handle telephony, RTC, or dialogue management.
5. Enable voice infilling where needed to refine utterances without full re-generation.
6. Tune latency, sample rates, and pronunciation rules; test conversational turn-taking.
7. Deploy, monitor performance, and iterate on prompts, voices, and routing workflows.

Cartesia AI Industry Use Cases

Contact centers use Cartesia to power natural IVR and live agents via Twilio, reducing wait times with responsive speech. SaaS teams embed real-time voice in apps for coaching, onboarding, or accessibility. Gaming and experiential media use voice cloning to give NPCs consistent personalities. AI chatbot builders on Rasa add lifelike speech output, while RTC apps on LiveKit stream multilingual voices for global audiences.

Cartesia AI Pros and Cons

Cartesia AI FAQs

• What is Cartesia AI used for?

  It powers real-time, ultra-realistic voice in conversational agents, IVR systems, and interactive apps, with features like voice cloning and voice infilling.

• Does Cartesia AI support real-time integrations?

  Yes. It integrates with Twilio for telephony, LiveKit for RTC, Pipecat for media pipelines, and Rasa for dialogue orchestration.

• How does voice infilling help?

  Infilling lets you correct words or refine segments within an audio stream without re-synthesizing the entire utterance, improving iteration speed and quality.

• Is voice cloning compliant and safe?

  Voice cloning should be used with explicit consent and proper data controls. Cartesia enables brand-aligned voices while supporting responsible usage.

• Which languages are available?

  Cartesia provides native speech in 15 languages, enabling multilingual voice experiences with clear pronunciations.