AssemblyAI
Industry-leading Speech AI models to automatically recognize and understand speech.
101 employees · est. 2017 · San Francisco, United States
Speechmatics
World leading experts in speech technology. Unlocking business value in human speech using AI and Machine Learning.
110 employees · est. 2006 · Cambridge, United Kingdom
Speechmatics is the older company (2017 vs 2006).
Side-by-Side Comparison
| Metric | AssemblyAI | Speechmatics |
|---|---|---|
| Founded | ||
| Founded | 2017 | 2006 older |
| Headquarters | ||
| Headquarters | San Francisco, United States | Cambridge, United Kingdom |
| Employees | ||
| Employees | 101 | 110 |
| Industry | ||
| Industry | AI, API, Big Data | AI, Big Data, Information Technology |
| Funding Stage | ||
| Funding Stage | Series C | Non Equity Assistance |
| Total Funding | ||
| Total Funding | $113.13M | $56.65M |
| Funding Rounds | ||
| Funding Rounds | 7 | 4 |
| Services | ||
| Services | Speech-to-Text API, Streaming Speech-to-Text, Speech Understanding Models, Voice AI Cloud Deployment, Self-Hosted AI Solutions | Speech-to-Text (STT), Text-to-Speech (TTS), Live Captioning, Speech Analytics, Automated Note-Taking |
| Target Customers | ||
| Target Customers | Startups, Fortune 500 companies, Contact Centers, Medical Institutions, Developers | AI Developers, Healthcare Providers, Media Companies, Contact Centers, Legal Professionals, Meeting Platforms |
| Taxonomy | ||
| Taxonomy | 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 | Speech Technology, Automatic Speech Recognition, AI-driven Speech Transcription, Deep Neural Networks, Speech-to-Text API, Real-time Transcription, Multilingual Transcription, Accent And Dialect Handling, Sentiment Analysis, Speech Summarization, Topic Detection, Speech Translation, Speech Analytics |
| Website | ||
| Website | assemblyai.com | speechmatics.com |
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, enh...
About Speechmatics
Speechmatics, founded in 2006 and headquartered in the United Kingdom, is a vanguard in the field of AI and Big Data, specifically within speech technology. The company's expertise lies in unlocking business value from human speech by leveraging cutting-edge AI and Machine Learning advancements. Wi...
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Funding, hiring, leadership and stack changes at AssemblyAI and Speechmatics — by email.
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Compiled from the BounceWatch company index. We last looked at AssemblyAI on 26 Mar 2026, and Speechmatics on 8 Apr 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.