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Amazon Polly vs Speechmatics: catalog facts
Amazon Polly	Speechmatics
Paid Pay-as-you-go AWS pricing, with an AWS Free Tier allowance.	Freemium A free start is offered, with paid usage and enterprise plans through sales.
Web	Web
Many voices across dozens of languages Neural and generative voice engines	Real-time and batch transcription in many languages Speaker diarization and identification
Requires an AWS account and billing setup Built for developers integrating an API rather than casual use	Built mainly for developers working with an API On-premises and enterprise options require contacting sales
Hosted service	Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.