Fixie

Fixie offers a real-time Voice AI platform designed for building natural and responsive voice agents that can speak, listen, and interact like humans. Their core technology, Ultravox, processes speech directly (rather than converting speech to text first), maintaining critical paralinguistic information and enabling fast, fluent, and flexible conversations. Fixie serves developers, businesses, and research organizations seeking to integrate advanced, scalable voice AI into applications via robust APIs, SDKs, and telephony integrations.