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AssemblyAI

AssemblyAI

Private
San Francisco, CaliforniaAI, Data & Cloud Infrastructurehttps://www.assemblyai.com/

Last Round

Series C

Dec 4, 2023

Est. Valuation

$300M

Total Funding Raised

$108.12M

Momentum

Top 5%

of companies Caplight tracks

Company Overview

AssemblyAI is an artificial intelligence company that provides a developer-focused API for speech-to-text and audio intelligence models.

Sector

AI, Data & Cloud Infrastructure

Verticals

NLP & Conversational AI, Cloud Communications, API Management, Medical AI, Customer Experience

Business Model

B2B

Customer Profile

Usage-Based SaaS, Subscription SaaS

AI Layer

Infrastructure

Keywords

speech-to-text APIvoice AIconversational AItranscription APIaudio intelligencereal-time transcriptionvoice agentSTTAI infrastructureclinical transcriptionsentiment analysisdeveloper toolsusage-based APIAI voice botspeech analytics

Historical Pricing

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Caplight Momentum Score

Proprietary index based on bid/ask volume and sentiment.

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AssemblyAI Comparables

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AssemblyAI comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Deepgram
90%
Gladia
83%
Soniox
78%

AssemblyAI Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
Series CDec 4, 2023
Series BJul 14, 2022
Series AMar 4, 2022
AcceleratorAug 1, 2017

Key People

Founding team and executive leadership

Dylan Fox

Founder CEO

Founding Team

AssemblyAI Investors

Notable investors and investment history

AssemblyAI investors
InvestorRounds
Root VenturesSeries A
Craft VenturesSeries A
Smith Point CapitalSeries C
Y CombinatorSeries B, Series A, Series C, Accelerator
Index VenturesSeries A
Insight PartnersSeries C, Series B
AccelSeries B, Series A, Series C

Market signals

Structured signals derived from secondary market and firmographic data.

  • Apr 20, 2026

    Launched Universal-3 Pro model with plain English instructions.

  • Mar 1, 2026

    Serving over 600M monthly inference calls and 1M daily API calls.

AssemblyAI Filings

SEC and related filings with document metadata.

Data table
TypedDateAmount OfferedAmount SoldFillingPagesDownload
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AssemblyAI Filings

SEC and related filings with document metadata.

Frequently Asked Questions

Common questions about AssemblyAI's valuation, stock price, and market status.

Firmographic Details

HeadquartersSan Francisco, California
Employee Range105
Year Founded2017
Last FundingDec 4, 2023

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