AssemblyAI
AssemblyAI provides speech recognition and analysis APIs for developers, with models used by companies like Granola and Dovetail. The 104-person company has raised $113M, including a Series C in December 2023.
The growth story
AssemblyAI grew from 17 to 104 employees between 2021 and 2026, raising $113M along the way, most recently a Series C in December 2023.
About
AssemblyAI sells AI-powered speech-to-text and speech understanding services through a developer API. Its customers use the technology to transcribe audio, extract insights, and build voice-enabled products. The company claims industry-leading accuracy for its models.
The Series C round shows continued investor confidence after six years in operation. While headcount growth data is unavailable, the engineering team (31% of staff) suggests ongoing technical investment.
Founders and leadership
Engineering makes up nearly a third of the 104-person workforce. The company has a flat structure typical of startups, with median tenure at just one year.
The AssemblyAI org chart
Dylan Fox (Founder & CEO) leads 28 mapped leaders with 7 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Engineering 41 (+5% YoY), Research 11 (-8% YoY), Information Technology 8 (-20% YoY), Marketing 5 (0% YoY), Operations 5 (+67% YoY), Administrative 5 (+25% YoY).
Talent flow
Employees come primarily from tech giants like Amazon (4 hires) and Microsoft (3). Alumni frequently move to AI startups, with 7 joining Anthropic and multiple founding their own companies.
Most common previous employers of AssemblyAI staff: Amazon (4), Mixpanel (3), Microsoft (3), Oracle (3), Adobe (2), Frame.io (2). Former AssemblyAI employees most often moved to Anthropic (7), Abridge (2), Google (2), Attuned Intelligence (2), Adobe (2), Google DeepMind (2).
Alumni worth knowing
The AssemblyAI mafia
Alumni have founded at least 7 companies, including Attuned Intelligence (16 staff) and AFAIK.io. The 2-founder ventures suggest AssemblyAI fosters entrepreneurial collaboration.
9Michael Nguyen, was Lead AI Researcher until 2024Guru Rao, was Founding Engineer & AI team lead until 2022Mısra Turp, was Senior II Developer Educator until 2024
Jason Miller, was Platform Engineering Manager until 2022
Josh Pinto, was Sr. Analytics Engineer until 2024
Stefan Rosanitsch, was Developer Advocate until 2022Web traffic
Traffic mix: 64% direct, 21% search, 5% social, 1% paid.
What this company is made of
Most common skills at AssemblyAI: Python (Programming Language) (45), Leadership (36), Microsoft Office (28), Management (27), JavaScript (27), SQL (25), Microsoft Excel (24), Java (23).
Where the team actually sits
AssemblyAI people are concentrated in California, United States (18), New York, United States (12), United Kingdom (4), United States (3).
Search footprint
AssemblyAI attracts about 3,933 organic search visits a month, traffic worth roughly $40K a month if bought through ads. It gained 1,007 ranking keywords and lost 880 in the last period.
What employees say
- Compensation
- 4.10 / 5
- Career opportunities
- 3.60 / 5
- Senior management
- 3.50 / 5
- Work-life balance
- 3.40 / 5
Frequently asked
AssemblyAI has 104 employees as of September 2026.
AssemblyAI has raised $113M in total, most recently a Series C round in December 2023.
AssemblyAI was founded in 2017 by Dylan Fox.
Dylan Fox (Founder & CEO) sits at the top of AssemblyAI's reporting structure, with 7 direct reports.
The most common previous employers of current AssemblyAI staff are Amazon (4 people), Mixpanel (3 people), Microsoft (3 people).
Former AssemblyAI employees most often move to Anthropic (7), Abridge (2), Google (2).
At least 7 companies have a founder who previously worked at AssemblyAI, including Attuned Intelligence, AFAIK.io, DigitalCarbon.
AssemblyAI attracts about 3,933 organic search visits a month, worth roughly $40K a month in equivalent ad spend.
The most common skills among AssemblyAI staff are Python (Programming Language), Leadership, Microsoft Office, Management, JavaScript.
AssemblyAI staff are concentrated in California, United States (18), New York, United States (12), United Kingdom (4).
AssemblyAI has about 41 people in Engineering, up 5% over the past year, as of September 2026.
AssemblyAI has about 11 people in Research, down 8% over the past year, as of September 2026.
Computed from 81 current and 124 former AssemblyAI profiles, as of September 2026. Source: Crustdata.
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