WhisperX

Whisper plus word timestamps and diarization
Speech (STT / TTS)STT with alignmentBSD-2-ClauseRuns locallyPythonIntermediate
🛡 Published security advisories
A high count usually means the project is heavily examined. A low count usually means it is little examined — not that it is safe.
No public activity signals for this tool — it has no open repository we can measure.
OSAI Pulse ⓘ ★★★★★★★★★★ /100 signals tracked
🐳 Docker pulls 📦 PyPI downloads / month 📦 npm downloads / month 🚀 Latest release ·
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What is WhisperX?

WhisperX adds accurate word-level timestamps and speaker diarization on top of Whisper, ideal for subtitles and multi-speaker transcripts.

Why people choose WhisperX

WhisperX at a glance

CategorySpeech (STT / TTS)
TypeSTT with alignment
LicenseBSD-2-Clause
Runs locallyYes
Built withPython
Skill levelIntermediate
Best forsubtitles and multi-speaker transcripts

Open-source alternatives to WhisperX

Other open-source speech (stt / tts) tools worth comparing:

WhisperOpenAI's open speech-to-text baselinefaster-whisperWhisper, much faster and lighterPiperFast, local neural text-to-speechCoqui TTSDeep-learning TTS with voice cloningBarkText-to-audio with voices and effectsF5-TTSZero-shot voice cloning that actually convincesKokoroTiny 82M TTS with astonishing qualitywhisper.cppWhisper in pure C/C++, runs anywhereOpenVoiceClone a voice and control its emotionStyleTTS 2Human-level speech synthesispyannote.audioKnow who spoke whenSilero VADDetect speech in audio, instantly

WhisperX head-to-head

WhisperX vs WhisperWhisperX vs faster-whisperWhisperX vs PiperWhisperX vs Coqui TTSWhisperX vs BarkWhisperX vs F5-TTSWhisperX vs KokoroWhisperX vs whisper.cppWhisperX vs OpenVoiceWhisperX vs StyleTTS 2WhisperX vs pyannote.audioWhisperX vs Silero VAD

FAQ

Is WhisperX free?

WhisperX is free and open-source (BSD-2-Clause license), so you can use, self-host and modify it at no cost.

Can I run WhisperX locally?

Yes. WhisperX is designed to run on your own machine or server, keeping your data private.

What is the best alternative to WhisperX?

Popular open-source alternatives include Whisper, faster-whisper, Piper. See the comparisons above to choose.

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