Mozilla DeepSpeech

by Mozilla

The original open RNN-T from Mozilla — archived but historic.

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Upstream is archived. Mozilla DeepSpeech’s repository has been set read-only by its owner, so there are no further releases, fixes, or security patches. The last commit landed 2025-06-19. It can still be cloned and run, and forks may be maintained elsewhere. See the repository.

TL;DR

Best for reference implementations + historical models for low-resource languages. Pricing: free.

Category
Open source
License
MPL-2.0
Stars
★ 26.8k
Last push
2025-06-19
Pricing
free
Platforms
Linux, macOS, Windows, Android, iOS

What it is

The repo that introduced open-source streaming ASR to many developers. MPL-2.0.

Best for: Reference implementations + historical models for low-resource languages.
Watch out for: Archived; superseded by Coqui STT and modern E2E systems.

Install / use

pip install deepspeech

Features

Speaker diarizationNo
Word-level timestampsYes
Streaming / real-timeYes
Languages supported2
HIPAA eligibleNo

Links

GitHub repo ↗

Mozilla DeepSpeech vs Whipscribe

FeatureMozilla DeepSpeechWhipscribe
CategoryOpen sourceTranscription APIs
Pricingfree$4–$24 one-time packs (credits never expire) · $2 single unlock · 60 min free on signup
Speaker diarizationNoYes
Word timestampsYesYes
StreamingYesNo
Languages299
PlatformsLinux, macOS, Windows, Android, iOSWeb, API, MCP

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