Ranked #1 in Speech Arena
Realistic AI voiceovers from any script
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How to make an AI voice over
Add your script
Paste a few lines or a full script. Punctuation shapes the pauses, so write it the way it should be read.
Choose a voice
Pick a voice by tone, accent, and language, or use a clone of your own voice. Preview it on your opening lines.
Generate and export
Adjust speed or emotion where a line needs it, then download the audio from Playground or request WAV or MP3 through the API.
Voiceovers for videos, courses, and stories
Videos and ads
Narration for product demos, explainers, and ads. When the script changes, you regenerate the line that changed instead of booking another recording.
Courses and training
One steady voice from the first module to the last, with specialist terms pronounced the same way every time.
Stories and podcasts
Expressive reads for a story's narration and dialogue, or a podcast's intro and segments.
You direct the delivery, line by line
Speed, emotion, and pronunciation
The voice can slow down on one line, change emotion on the next, or say a brand name your way. A pronunciation dictionary keeps that name right in every voiceover that uses it.
Explore delivery controlsWAV for editing, MP3 for publishing
Full-quality WAV holds up through mixing, and smaller MP3 files load fast on the web. The API returns either format.
Explore audio file outputClone a voice to read new scripts
Create a reusable voice for your videos, courses, and narrated stories with AI voice cloning. Turn new scripts into voiceovers and update a recording when your message changes.
Explore AI voice cloningFluent and native, worldwide
Voiceovers in 44 languages and 87 regional accents, so a translated script becomes the Spanish, Hindi, or Japanese version of your video.
Explore more voice tools
AI voiceover FAQs
Can you use AI for a voice over?
Yes. An AI voiceover is speech generated from a written script, so a video, course, ad, or podcast gets narration without a recording session.
Is there a free AI voiceover generator?
Yes. The generator on this page is free to try with no sign-up, for scripts up to 500 characters. A free Cartesia account adds monthly credits in Playground, and a paid plan adds a commercial-use license.
Which AI is best for voice overs?
Cartesia's voice model is ranked #1 in Artificial Analysis's Speech Arena, where listeners rate text-to-speech models in blind listening tests. It reads scripts in 44 languages.
Can I use AI voiceovers in commercial videos and ads?
Yes. Paid Cartesia plans include a commercial-use license. See pricing and the terms of service for details. You need the rights to your script and to any voice you clone.
Can I make an AI voiceover in my own voice?
Yes. Paid plans include voice cloning: a clone made from a recording of your voice, or of a speaker who has given permission, reads any script you write.
Can I control the speed, emotion, and pauses of an AI voiceover?
Yes. Playground and the API have controls for speed, volume, and emotion. Punctuation shapes where the voice pauses.
How do I get a brand name pronounced correctly in an AI voiceover?
Add it to a pronunciation dictionary in Playground or through the API, as a sounds-like spelling or an IPA pronunciation. Every later voiceover that uses the dictionary says it your way.
Can I make an AI voiceover in another language?
Yes, in 44 languages: pick a voice for the language, and the translated script becomes a voiceover in that language. Hear examples in the language library.
Should I use WAV or MP3 for a voiceover?
Use WAV if you plan to edit or mix the audio, and MP3 when the file is ready to publish. The API returns both formats.
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