AssemblyAI
AssemblyAI is a STT / ASR company founded in 2017 and based in San Francisco, United States. It has raised $108M in total funding, most recently a Series C in 2023.
AssemblyAI provides AI-powered speech-to-text APIs with sentiment analysis, speaker diarization, and real-time transcription features. Raised $50M in Series C funding led by Accel in December 2023; processes billions of audio minutes per month for Spotify, CallRail, and more.
AssemblyAI is the infrastructure-layer ASR leader used by thousands of developers building voice apps, with $1B+ valuation.
assemblyai.com ↗·STT / ASR·
United States·private 
