About AssemblyAI
AssemblyAI provides state-of-the-art speech AI models via API for transcription, speaker diarisation, sentiment analysis, and topic detection in audio and video. Its Universal-2 model sets accuracy benchmarks across noise, accents, and domains. Trusted by Zoom, Spotify, and 20,000+ developers, AssemblyAI's audio intelligence APIs enable products like meeting summarisation, content moderation, and call analytics.
NeuronScore
Agent-Ready
MCP
Public API
Webhooks
OAuth2
SDK · TS
SDK · Py
SDKs: PythonTypeScriptJavaScriptGoJavaRuby
Funding History
Sep 2022 Series B — $50M
Jan 2022 Series A — $28M
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FAQ
When was AssemblyAI founded?
AssemblyAI was founded in 2017 in San Francisco, United States.
How much funding has AssemblyAI raised?
AssemblyAI has raised $78M across 2 rounds — most recently a Series B in Sep 2022.
What is AssemblyAI's valuation?
Most recent disclosed valuation is $500M.
How much does AssemblyAI cost?
AssemblyAI pricing: Freemium.
Where is AssemblyAI headquartered?
AssemblyAI is headquartered in San Francisco, United States.
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