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Sherpa-ONNX vs Deepgram: catalog facts
Sherpa-ONNX	Deepgram
Free Free and open source.	Freemium Free sign-up for trying the APIs, with paid usage and enterprise plans.
Windows, macOS, Linux, Android, iOS, Self-hosted, Command line	Web, Self-hosted
Works fully offline Runs on phones, single-board computers and NPUs as well as servers	Speech-to-text, text-to-speech and voice agents from one provider Real-time streaming as well as batch transcription
Mainly a developer toolkit with technical setup Models must be downloaded and chosen separately	Built for developers integrating an API, not a consumer app Usage beyond the free tier is paid
Downloadable app, Self-hosted	Self-hosted, Hosted service
Open source	Closed source
License: Apache-2.0	License not stated
No account needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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