Sonic-3

Sonic-3 is a streaming text-to-speech model by Cartesia, designed for voice agents and real-time conversational AI. It delivers ultra-low latency (under 100 ms) and natural expressiveness, including laughter, excitement, and sadness. The model handles context-savvy accuracy, such as intelligently reading acronyms and initialisms. It supports over 40 languages, covering 95% of the world, with native voices. Sonic-3 offers instant voice cloning in 10 seconds and professional voice clones. It is developer-first with API, SDK, and playground for rapid prototyping, and enterprise-ready with SOC 2 Type II, HIPAA, and PCI Level 1 compliance. The model powers voice agents across industries like healthcare, customer service, gaming, and logistics.

Key Benefits

• Ultra-low latency under 100 ms for real-time conversations
• Natural expressiveness including laughter and emotions
• Context-savvy handling of acronyms and initialisms
• Supports over 40 languages with native voices