While whisper.cpp is faster than faster-whisper on macOS due to Apple's Neural Engine [0], if you have a GPU on Windows or Linux, faster-whisper [1] is a lot faster than OpenAI's reference Whisper implementation as well as whisper.cpp, with the CLI being wscribe or whisper-ctranslate2 as faster-whisper is only a Python library. It's pretty good.

[0] https://github.com/guillaumekln/faster-whisper/discussions/3...

[1] https://github.com/guillaumekln/faster-whisper