Vocabulary & accuracy
Apple Dictation uses a general-purpose model and tops out around 6.8% WER on technical English in our tests. Jarvis hits 3.1% WER on the same content. The gap is largest on jargon, code, names, and acronyms.
Phrase-length limits
Apple Dictation cuts off after roughly 50 words per phrase. Jarvis has no phrase limit. Dictate a whole paragraph or essay in one go.
Custom commands
Apple has Voice Control commands but they're fragile and don't compose. Jarvis runs natural-language commands and chains.
When Apple Dictation is enough
Quick notes, short messages, casual replies. If that's 90% of your voice use, the built-in tool is fine.
When to switch
Long-form writing, technical content, voice control of apps, multilingual workflows, or anything where the 50-word limit and accuracy gap matter.