Fixie

Fixie offers a unified real-time voice AI platform designed to empower developers and businesses to create voice agents that converse naturally, with low latency and high flexibility, by processing speech directly rather than first transcribing to text. Their core product, Ultravox, is a state-of-the-art speech model that includes robust APIs, SDKs, and telephony integrations to easily build and scale conversational agents capable of understanding paralinguistic signals such as tone, cadence, and pitch.