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AssemblyAI vs Soniox

Side-by-side on funding, valuation, status, and the rest of the FOBI roster.

Voice & Conversational Interfaces

AssemblyAI

AssemblyAI provides AI-powered speech-to-text APIs with sentiment analysis, speaker diarization, and real-time transcription features.

Voice & Conversational Interfaces

Soniox

Soniox develops high-accuracy, low-latency speech recognition optimized for conversational AI and telephony applications.

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Field	AssemblyAI	Soniox
Status	Private	Private
Sector	Voice & Conversational Interfaces	Voice & Conversational Interfaces
Subsector	STT / ASR	STT / ASR
Founded	2017	2020
HQ	San Francisco, United States	Menlo Park, United States
Headcount	51-200	11-50
Total raised	$115M	—