Build Using Free Cartesia Sonic 3 TTS All Week on Vapi

Cartesia has introduced Sonic-3, a text-to-speech (TTS) system that sets new standards for speed and quality, offering users the opportunity to explore its capabilities through different voices and adjustable emotion and speed controls. To facilitate this exploration, a partnership with Vapi provides the community with a free week of access to Sonic-3 from October 28 to November 2, allowing users to experiment with its production-grade voices and industry-leading speed without cost constraints. Sonic-3 features human-like expressivity with emotion and laughter tags, fine-grained speed and volume control, and multilingual capabilities supporting 27 languages. Recommendations for optimal use on Vapi's platform include selecting optimized voices like Kira and Ariana, utilizing emotion and expressivity controls for more human-like interactions, and leveraging multilingual support for enhanced accuracy in specialized scenarios.

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