AssemblyAI builds speech-to-text and speech understanding models, exposed as APIs for developers building voice applications. Products include Speech-to-Text, Streaming Speech-to-Text, and a Voice Agent API.

Used by Zoom, Veed, and CallRail among other voice-AI products. The company reports serving 600M+ inference calls and 840M+ API calls per month, with over 40 terabytes of audio processed daily.

Mission stated as "advancing and democratizing Voice AI technology for the world." Raised $50M Series C led by Accel in December 2023. Team described as interdisciplinary research leaders, scientists, and engineers.

Featured reads

Tech Job Market Report: October 2026

Snapshot of the October 2026 tech job market on Remoet: where the open roles are, who's hiring most, what techs pay, and which benefits show up most often.

What vLLM Is, and Why It Keeps Showing Up in Job Posts

vLLM is in the stack of 43 hiring tech companies on Remoet, against 8 that name an open-weight model directly. Companies do not write down the weights. They write down the server.