Cartesia

Cartesia is for creators and developers who want to test AI-generated speech or build voice features into an app. In its web playground, you can enter text, choose a voice, and listen to it read aloud using Sonic, Cartesia’s text-to-speech model. Compare voices with your own scripts, including names and numbers, and adjust supported delivery settings such as speed and emotion. The playground also provides a way to explore voice options, including voice cloning for voices you have permission to use. Use Cartesia to audition narration for videos, podcasts, stories, and other content, or to prototype spoken responses for conversational apps and voice agents. Developers can take the voice and settings they evaluate in the playground and generate or stream speech through Cartesia’s API. Cartesia also offers speech-to-text and managed voice-agent tools, so it may suit teams building interactive voice experiences as well as people exploring text to speech.

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