Inworld AI

Inworld AI is a research lab and inference provider for realtime AI at consumer scale. Its offering consists of first-party text-to-speech and speech-to-text models, the LLMs customers choose, and the inference underneath. Its products are Realtime TTS, Realtime Router, Realtime STT and a Realtime API. Its solutions are grouped under Social & Companions, Learning & Education, Health & Wellness, Agentic Workforce, and Games & Media.

Its speech-to-text transcribes speech in 30 languages. Its voice cloning can create a custom voice from 15 seconds of audio and localize it to speak 200+ languages. The Realtime API connects speech-to-text, the LLM a customer chooses, and text-to-speech in one spoken conversation. The Realtime API follows the OpenAI Realtime protocol.

Inworld has acquired Ultravox.