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Amazon Polly vs edge-tts: catalog facts
Amazon Polly	edge-tts
Paid Pay-as-you-go AWS pricing, with an AWS Free Tier allowance.	Free Free and open source; it uses Microsoft's online service at no cost.
Web	Windows, macOS, Linux, Command line
Many voices across dozens of languages Neural and generative voice engines	No API key or Microsoft account needed Writes subtitles alongside the audio
Requires an AWS account and billing setup Built for developers integrating an API rather than casual use	Depends on Microsoft's online service, so it needs internet and could break if the service changes Playback command needs mpv on macOS and Linux
Hosted service	Downloadable app
Closed source	Open source
License not stated	License: LGPL-3.0
Account needed	No account needed
Needs internet	Needs internet
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.