Cartesia

What it is

Platform for building voice AI with real-time text-to-speech, speech-to-text, and managed voice agents for production applications.

Quick answers

What is AI dubbing and how does Cartesia fit into the workflow?

AI dubbing uses generated speech to create a new spoken track for a video, often in another language. Cartesia's Sonic text-to-speech model generates audio from your script. You prepare and review the translation, create the voice track in the Playground or API, then align and mix that audio with your video in an editor.

How do model credits and voice agent rates work within each plan?

Your monthly plan gives you both credits for voice models and prepaid dollars for Managed Agents. Credits are used for STT and TTS at their respective rates. Prepaid dollars go toward voice agents at no additional cost. For example, the Scale plan gives 8M credits/month for STT or TTS and $299/month for Managed Agents.

How many voice agent minutes do I get per plan?

At $0.06/minute, the approximate agent call minutes per plan are: Free Plan - 17 minutes; Pro Plan - 1 hour, 23 minutes; Startup Plan - 13 hours, 37 minutes; Scale Plan - 83 hours, 3 minutes. These calculations do not include costs for fully managed phone numbers.

How many credits do I need for text-to-speech and speech-to-text?

For Sonic text-to-speech, one minute of audio generation requires 750-800 credits, with 1 credit equaling 1 character. For Ink speech-to-text, one hour of audio costs only $0.39 on the Scale plan, with 3 credits equaling 1 second of audio.

Can I use generated dubbing audio commercially?

Yes, Cartesia's paid plans include a commercial-use license. However, you also need rights to the video, script, and any voice you clone for the intended use. Review pricing, terms of service, and acceptable use policy before publishing.