AssemblyAI

AssemblyAI

API-based speech transcription and analytics

Overview

AssemblyAI provides an API-driven Speech AI platform that converts audio and video into text and insights. Its models handle automatic transcription and add-ons like speaker diarization, sentiment analysis, and PII redaction, all delivered through scalable API endpoints so customers can integrate transcription and audio analytics into their own apps. Unlike many competitors, AssemblyAI emphasizes a combination of high accuracy, broad capabilities (including privacy-focused features), and ongoing model improvements from a research-driven team, with a subscription-based pricing model for access and data processed. The company aims to help businesses unlock voice data by turning speech into actionable information that can power products and services across tech, media, and enterprise sectors.

YC Company

About AssemblyAI

Simplify's Rating
Why AssemblyAI is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Data & Analytics

Enterprise Software

AI & Machine Learning

Company Size

51-200

Company Stage

Series C

Total Funding

$113.1M

Headquarters

San Francisco, California

Founded

2017

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Simplify's Take

What believers are saying

  • Activepieces integration expands no-code automation market.
  • Postman collection accelerates developer API testing.
  • Vercel AI SDK enables seamless Next.js transcription.

What critics are saying

  • Ruby SDK discontinuation drives users to OpenAI Whisper.
  • OpenAI Whisper v3 turbo captures real-time market in 6 months.
  • Deepgram Nova-3 poaches enterprise clients in 12 months.

What makes AssemblyAI unique

  • Universal-2 model achieves 93.3% word accuracy on noisy audio.
  • Speaker diarization improved 13% with five new languages.
  • Universal-Streaming delivers immutable transcripts in 300ms latency.

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Funding

Total Funding

$113.1M

Meets

Industry Average

Funded Over

5 Rounds

Series C funding is usually for startups that are doing well and are looking for more money to fuel major growth, such as acquiring other companies, expanding into global markets, or launching new product lines. Investors typically include larger venture capital firms and private equity.
Series C Funding Comparison
Meet Average

Industry standards

$50M
$50M
Medium
$50M
AssemblyAI
$62M
SeatGeek
$100M
Oura

Benefits

Competitive Salary + Bonus

Equity

401k

100% Remote team

Unlimited PTO

Premium medical, vision, & dental care

$1K budget for your home office setup

New Macbook Pro (or PC if you prefer)

2x/year company paid team retreat

Growth & Insights and Company News

Headcount

6 month growth

2%

1 year growth

0%

2 year growth

0%
AssemblyAI
Jan 9th, 2025
Dev.to x AssemblyAI: Winter Speech-to-Text Challenge Winners

Last month, AssemblyAI, Inc. partnered with developer community hub Dev.to to host a winter hacking challenge!

Blockchain.News
Nov 25th, 2024
Implementing Speech-to-Text with JavaScript and Node.js

AssemblyAI has released a comprehensive tutorial on utilizing its API to convert audio and video files into text using JavaScript and Node.js.

TechCrunch
Oct 15th, 2024
Gladia believes real-time processing is the next frontier of audio transcription APIs

Gladia competes with other well-funded companies in the space, such as AssemblyAI, Deepgram and Speechmatics.

AssemblyAI
Oct 3rd, 2024
AI-powered meeting company Supernormal launches customizable Voice Agents

AssemblyAI, Inc. recently launched Voice Agents, a new addition to its AI meeting platform that allows users to create customizable conversational agents to handle routine conversations like inbound sales, customer support, candidate screens, and employee surveys-saving users time and providing an instant and engaging experience for end-users.

Megaupload Ltd
Sep 27th, 2024
AssemblyAI Launches Postman Collection for Enhanced API Testing

AssemblyAI launches Postman collection for enhanced API testing.

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