Add Text-to-Speech to Apps with Cartesia Sonic 3 & Vision Agents

Cartesia Sonic 3, released in late 2025, revolutionizes text-to-speech technology for voice agents by offering sub-200 ms first-chunk latency, emotional expressiveness, multilingual support, and the ability to clone voices from brief audio samples. This new advancement facilitates the creation of voice agents that deliver realistic and natural-sounding conversations, integrating seamlessly with Vision Agents through a straightforward plugin. By streamlining the integration process, Cartesia Sonic 3 allows developers to concentrate on prompt engineering and agent logic without being bogged down by audio buffering issues. The tutorial provides a step-by-step guide to building an agent using Sonic 3, emphasizing its benefits such as instant customization of voice features and compatibility with various programming stacks, while also highlighting its superior human-like rhythm and quick speech onset, crucial for responsive user interactions.