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DeepL vs Seamless: catalog facts
DeepL	Seamless
Freemium Free translator and free API key, with paid plans for more usage and features.	Free Free Android app licensed under MIT. The Seamless model it uses is licensed under CC-BY-NC…
Windows, macOS, Android, iOS, Web, Browser extension	Android
Translates whole documents as well as text Writing assistant and live voice translation alongside the translator	Speech translation works offline after model download Supports English, Spanish, Portuguese, Hindi and Russian
Text is processed on DeepL's servers Many features and higher limits need a paid plan	Requires an initial model download
Downloadable app, Web application, Browser extension	Downloadable app
Closed source	Closed source
License not stated	License: MIT
No account needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 8, 2026

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