What actually changes when you move Mac dictation from the built-in tool to Zen Whisper
| What is being compared | Zen Whisper | Apple Dictation |
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| Where speech is processed | On the Mac, with speech packs you download. Core dictation never leaves the machine. | On device for some Mac and language combinations, on Apple servers for others. Keyboard Settings shows which side you are on. |
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| Working offline | Yes for everything core. Cloud engines are opt-in and only run on API keys you add yourself. | Only when on-device processing applies to your Mac and language. |
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| Recordings and links | Drop in MP3, WAV, M4A or MP4, or paste a YouTube or Instagram link. Everything transcribes on the Mac. | Not what it does. Dictation types as you speak, and nothing more. |
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| Your own vocabulary | A personal dictionary you edit, starred to prioritise and scoped per app, plus spoken snippets. Both stay on the Mac. | Recognition improves on its own. There is no recognition dictionary you can edit. |
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| Cost and requirements | Paid, with a 14 day trial that starts on your first transcription, not at install. Needs Apple Silicon, macOS 14 or later, and speech packs take real disk space. | Free and already installed on every Mac. |
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