Cartesia Sonic
Sonic is the fastest human-like voice API.
Cartesia Sonic launched on May 29, 2024 with 148 votes, #370 of 4,539 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 2 years on.
What it does
Sonic is a blazing fast, lifelike generative voice API (🚀 135ms model latency). Build high quality, real time voice experiences with a diverse voice library, instant voice cloning, voice mixing, and voice design with speed and emotion control.
Integrate real-time text-to-speech with Sonic-3.6, Cartesia
Seven capabilities that make Sonic the voice layer production agents rely on. The best voice interactions feel effortless — tone adjusts to context, pacing stays consistent, and the speech moves with the natural rhythm of how people actually talk. By default, Sonic interprets the emotional subtext in the transcript and calibrates delivery automatically. Non-verbal expressions like laughter can be inserted directly into the transcript. Clone your voice, localize it into 44 languages, and fine-tune every word. Clone any voice instantly with 10 seconds of audio. High speaker similarity means the brand voice you love stays true, even at scale. Localize any audio clip with native-speaker…from cartesia.ai
Does a similar job
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AI Voices by Asyncflow v1.02025 · async.com · ▲401Premium AI voice quality without the premium price tag.
AI Voice Cloning by Wavel2023 · wavel.ai · ▲360High-quality voice clones with just 60 seconds of audio
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Source: Product Hunt launch ↗
