Mozilla DeepSpeech

by Mozilla

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

TL;DR

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

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

Category
Open source
License
—
Stars
—
Last push
—
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Watch out for: Archived; superseded by Coqui STT and modern E2E systems.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

Mozilla DeepSpeech vs Whipscribe

FeatureMozilla DeepSpeechWhipscribe
CategoryOpen sourceTranscription APIs
Pricingfreefree beta
Speaker diarizationNoYes
Word timestampsYesYes
StreamingYesNo
Languages299
PlatformsLinux, macOS, Windows, Android, iOSWeb, API, MCP

Alternatives to Mozilla DeepSpeech

OpenAI Whisper
OpenAI

The reference open-source multilingual ASR model from OpenAI.

OSS · MIT ★ 98.1k
whisper.cpp
Georgi Gerganov

C/C++ port of Whisper — runs on anything, from a Raspberry Pi to Apple Silicon.

OSS · MIT ★ 48.8k
faster-whisper
SYSTRAN

4× faster than reference Whisper using CTranslate2 — production sweet spot.

OSS · MIT ★ 22.3k

Whipscribe is a managed faster-whisper + whisperX service. If you want transcripts without running infrastructure, paste a URL or drop a file in the form below — you'll have a transcript in seconds.