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WhisperX

Fast Whisper transcription with word-level timestamps and diarization

Self-Hosted AI ★ 23.5k stars Medium setup BSD-3-Clause

WhisperX extends Whisper with accurate word-level timestamps and speaker diarization. It uses forced alignment and voice activity detection to produce precise, batched transcriptions.

Key features

  • Word-level alignment
  • Speaker diarization
  • Batched inference
  • VAD preprocessing

Strengths

  • Released under the BSD-3-Clause license
  • Mature project with 23.5k GitHub stars
  • Written in Python

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