AssemblyAI
Best-in-class speech-to-text + audio intelligence (sentiment, summary, topic detection). Used by Calendly, Hubspot, and Spotify Greenroom.
- Location
- San Francisco, United States
- Raised
- $115M+
- Stage
- Series C
- Founded
- 2017
- Category
- AI
- Funding
- VC-backed
- Team
- 51-200
Funding figures as of Jul 2025 · not independently verified
Founders of AssemblyAI
- Dylan Fox
Investors backing AssemblyAI
- Insight Partners
- Y Combinator
Frequently asked questions
What does AssemblyAI do?
Best-in-class speech-to-text + audio intelligence (sentiment, summary, topic detection). Used by Calendly, Hubspot, and Spotify Greenroom.
Where is AssemblyAI based?
AssemblyAI is based in San Francisco, United States.
When was AssemblyAI founded?
AssemblyAI was founded in 2017.
How much has AssemblyAI raised?
AssemblyAI has raised $115M+ in their Series C round as of Jul 2025.
Who founded AssemblyAI?
AssemblyAI was founded by Dylan Fox.
Who has invested in AssemblyAI?
AssemblyAI is backed by Insight Partners, Y Combinator.
How AssemblyAI would pitch themselves
○ Auto-generated01Target customer
Production scale — the core audience AssemblyAI's product is built around.
02Problem they solve
Best-in-class speech-to-text + audio intelligence (sentiment, summary, topic detection). Used by Calendly, Hubspot, and Spotify Greenroom. The category has historically been served by tools that miss the modern workflow this product is built around.
03Key differentiator
AssemblyAI differentiates on speech ai models for production scale. Backed by Insight Partners + Y Combinator, $115M+ raised — the company has resources + validation to compound this thesis. Founded by Dylan Fox.
04Go-to-market strategy
Growth-stage GTM — multi-channel revenue motion (direct enterprise sales, channel partnerships, marketplace listings). Vertical specialisation + verticalised AE teams targeting enterprise + mid-market.