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The #1 AI voice generator free to try, no sign-up
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From text to speech
Try a passage from your script, compare voices, and find the right delivery.
Write your script
Paste up to 500 characters into the demo, or pick a sample to hear a starting point.
Choose a voice
Choose a language and voice, then press Play. Try the same sentence with another voice to compare.
Create your audio
Continue in the Playground for more controls, or use the API to generate audio from your application.
Make it your own
Fine-tune your recording in the Playground, or add speech to your app.
Create in the Playground
Choose a voice, adjust speed and emotion, and listen back as you revise. Use it for a video voiceover, narration, or a phone prompt.
Open the PlaygroundBuild with the API
Send text and a voice ID to Sonic. Stream speech as it generates, or save audio as MP3 or WAV with the bytes endpoint.
Explore the speech APIFluent and native, worldwide
Reach international markets with Sonic — 44 languages and a wide range of accents, all with native-speaker quality voices.
Clone a voice from a short sample
Start with 10 seconds of clean speech from one speaker. Create your own voice in the Playground or API, then use it to read new scripts. Listen to the original and cloned samples here to compare.
Explore voice cloningBuild with your coding agent
Install Cartesia's skill, then ask your agent to add voices, streaming audio, or text to speech to your app.
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AI voice generator FAQs
What is an AI voice generator?
An AI voice generator turns written text into spoken audio. Pick a voice, enter your script, and listen to the result. Cartesia uses Sonic for text-to-speech, with voices for narration, voiceovers, and conversational applications.
How do I turn text into speech online?
Paste your script into the voice generator above, choose a language and voice, then press Play. Try a short passage first to compare how different voices read it. Open the Cartesia Playground to continue working on your audio.
Can I use the AI voice generator for free without signing up?
You can try the demo on this page without an account. Each preview accepts up to 500 characters. A free Cartesia account includes text-to-speech credits; paid plans add more usage and features. See current plans for allowances and commercial-use terms.
How do I download AI-generated speech as MP3 or WAV?
This page is a listening preview. To create audio for a project, continue in the Cartesia Playground or use the API. The text-to-speech bytes endpoint supports MP3, WAV, and raw audio output.
Can I change the speed and emotion of an AI voice?
Yes. The Playground and API provide speed, volume, and emotion controls. These guide the model rather than guarantee an exact delivery, so listen to the output with your script. See the voice controls guide.
Can I generate speech with a clone of my own voice?
Yes. Instant voice cloning starts with 10 seconds of clean speech from one speaker. Sonic 3.6 can use up to 60 seconds to better retain an accent. Create the clone in the Playground or API, then use it for text-to-speech. Check the cloning guide and plan availability.
Which languages does Cartesia text to speech support?
Sonic 3.6 supports 44 languages, including English, Spanish, French, German, Japanese, Portuguese, and Chinese. Choose the language that matches your script. See supported languages.
How do I choose an AI voice for narration or voiceovers?
Compare voices using the same paragraph from your script. Listen for pacing, pronunciation, and how the voice handles names or dialogue. Browse Cartesia voices for a starting point, then preview your own text before generating a longer recording.
Can I add the AI voice generator to my app with an API?
Yes. Cartesia's text-to-speech API accepts your script and a voice ID and returns generated audio. Use it for spoken responses in an app or to create audio files. Start with the text-to-speech API reference for request examples and output formats.
Can I use AI-generated voices in commercial projects?
Cartesia's paid plans include a commercial-use license. Check pricing and the terms of service for the terms that apply to your project.
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