AssemblyAI logo — Industry-leading Speech AI models to automatically recognize...

AssemblyAI

Industry-leading Speech AI models to automatically recognize and understand speech.

Founded 2017 United States San Francisco, United States 101 employees Series C Total: $113.13M AI, API +2

General Information

Company Name AssemblyAI
Founded Year 2017
Location United States San Francisco, United States
Employees 101
Industries AI, API, Big Data +1
Funding Stage Series C
Business Model B2B, API, SaaS
Revenue Model Usage Based, Subscription, Pay As You Go
Social

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About AssemblyAI

AssemblyAI, founded in 2017, is a leader in developing Speech AI technologies, strategically positioned at the crossroads of AI, API, Big Data, and Information Technology. With its headquarters in the United States, the company offers best-in-class speech-to-text and speech understanding models, enhancing the infrastructure of top Voice AI applications like Granola, Dovetail, Ashby, and Cluely.

Leveraging industry-leading accuracy and quality in its models, AssemblyAI goes beyond basic transcription to offer insights, speaker identification, and information highlights. The developer-first API and scalable usage-based pricing lower the barriers for integration, making it an attractive proposition for developers aiming to build voice data-driven products.

In its recent funding round, the company secured a $50.00M Series C investment dated 01 December 2023. Backed by notable investors such as Insight Partners, Y Combinator, Smith Point Capital, LLC, Accel, Nat Friedman, Daniel Gross, and Keith Block, AssemblyAI is poised for growth and further innovation in speech recognition technology.

Business keywords: Speech AI, Speech-to-Text, Voice AI, Speech Understanding, Speech Recognition, Promptable Speech Recognition, AI Infrastructure, Developer API, Usage-Based Pricing, Voice Data Applications, Transcription Accuracy, Speaker Identification, Voice Data Insights, AI Model Scaling, Speech AI Democratization

Services & Products

Speech-to-Text API
Streaming Speech-to-Text
Speech Understanding Models
Voice AI Cloud Deployment
Self-Hosted AI Solutions

Target Customers

Startups Fortune 500 companies Contact Centers Medical Institutions Developers

Funding Rounds & Investors (7)

View All
Funding Stage Amount Investors Lead Investors Date
Series C $50.00M 7
Insight Partners, Y Combinator +5
01 Dec 2023
Series B $30.00M 3
Insight Partners, Y Combinator +1
01 Jul 2022
Series A $28.00M 5
Y Combinator, Accel +3
01 Mar 2022
Early VC $5.00M -
01 Nov 2020
Convertible Note Undisclosed -
01 Mar 2019
Seed $130.00K 1
Y Combinator
01 Sep 2017
Support Program Undisclosed 1
Y Combinator
01 Jun 2017

AssemblyAI Alternatives & Competitors

View All Alternatives
AssemblyAI vs
Deepgram
Deepgram United States

Powering the Voice AI economy—trusted by 200,000+ developers to build low-latency, enterprise-grade...

Series C
319 employees
AI, API
AssemblyAI vs
Soniox
Soniox United States

Understand people through audio.

16 employees
AI, Big Data
AssemblyAI vs
Deep Infra Inc.
Deep Infra Inc. United States

Fast ML inference. Run top AI models using a simple API.

Seed
21 employees
AI, API

FAQ About AssemblyAI

Industry-leading Speech AI models to automatically recognize and understand speech.
AssemblyAI was founded in 2017.
AssemblyAI is headquartered in San Francisco, United States.
AssemblyAI operates in AI, API, Big Data and Information Technology. Its work centres on Speech AI, Speech-to-Text, Voice AI and Speech Understanding. Its customers include Startups, Fortune 500 companies and Contact Centers.
AssemblyAI has a B2B, API and SaaS business model. Its revenue comes from Usage Based, Subscription and Pay As You Go.
AssemblyAI has approximately 101 employees.
AssemblyAI has completed 7 funding rounds, raising a total of $113.13M. The latest funding stage is Series C.
AssemblyAI offers: Speech-to-Text API, Streaming Speech-to-Text, Speech Understanding Models, Voice AI Cloud Deployment, Self-Hosted AI Solutions.
Top alternatives and competitors to AssemblyAI include Deepgram, Soniox, Deep Infra Inc., Gladia, DeepAffects. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
AssemblyAI and Deepgram are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

Source: BounceWatch company record for AssemblyAI, https://bouncewatch.com/company/assemblyai, updated 26 March 2026. When citing, please name BounceWatch and link this page.

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