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whisper.cpp vs WhisperX

The same facts for both, read from GitHub every night, and the relation a person reviewed.

whisper.cpp vs WhisperX
Fact	whisper.cpp	WhisperX
Language	C++	Python
Licence	MIT	BSD-2-Clause
Stars	54k	25k
Latest	v1.9.5	v3.8.6
Last push	2026-10-12	2026-10-18
Release cadence	too few releases	about 7 days between releases
Active contributors	178+ commit authors on the default branch in the last 90 days	3 commit authors on the default branch in the last 90 days
Flags	none	none

How they relate

Both replace Whisper. Alternatives to Whisper →
Full replacementwhisper.cppC and C++ port of Whisper that runs on CPU and Apple silicon without Python or PyTorch.
Full replacementWhisperXAdds word-level timestamps, voice activity detection and speaker diarization on top of faster-whisper.