Speechmatics vs AssemblyAI
Speechmatics is a European alternative to AssemblyAI: same ai & machine learning use case, headquartered in United Kingdom and governed by UK GDPR, while AssemblyAI is based in the United States.
By the EU Alternatives team Last updated
- Jurisdiction
- United Kingdom
- Primary privacy law
- UK GDPR
- US CLOUD Act exposure
- No
- Open source
- No
- Free tier
- No
Developers pick this speech-to-text API for the accuracy of its Universal models and docs that get transcription working in an afternoon. You pay per use, from roughly 15 cents per hour of audio, with 50 dollars of one-time credit rather than a recurring free tier. AssemblyAI, Inc. is based in San Francisco, so every uploaded recording sits under US law.
- Jurisdiction
- United States
- GDPR by default
- Requires DPA + TIA
- US CLOUD Act exposure
- Yes
Speechmatics vs AssemblyAI at a glance
| Speechmatics | AssemblyAI | |
|---|---|---|
| Headquarters | United Kingdom | United States |
| Data jurisdiction | United Kingdom | United States |
| Primary privacy law | UK GDPR | Requires DPA + transfer assessment |
| US CLOUD Act exposure | No | Yes |
| Best for | Teams that need ai & machine learning built for European data-protection requirements | Teams already invested in the AssemblyAI ecosystem |
Choose Speechmatics if…
- You want a provider governed by a European privacy regime
- GDPR or public-sector data-protection requirements apply to you
- You'd rather back the European tech ecosystem
Stick with AssemblyAI if…
- You depend on integrations only available in the AssemblyAI ecosystem
- Your organisation has no EU data-residency constraints
- Migration costs outweigh the jurisdiction benefits for now
Why choose Speechmatics over AssemblyAI?
The decisive argument is data jurisdiction. AssemblyAI is headquartered in the United States, which means personal data processed through it can be subject to non-EU legal regimes: the US CLOUD Act, FISA 702, or similar laws depending on the provider. After the 2020 Schrems II ruling, EU organisations must carry out a transfer impact assessment for every such data flow.
Speechmatics removes that overhead. As a United Kingdom-based provider, it operates under UK GDPR, and data stays in the United Kingdom, which the European Commission recognises as offering an adequate level of protection. For regulated sectors such as health, public administration, and finance, that's not a nice-to-have but a requirement. For everyone else, it's concentration-risk insurance: you avoid depending on a single jurisdiction that can change the rules without warning.