OneSentence – An offline macOS voice utility built entirely with AI

Show HN: OneSentence – An offline macOS voice utility built entirely with AI

OneSentence – An offline macOS voice utility built entirely with AI is active in the show hn launch space.

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Hi HN, I’m sharing OneSentence, an offline voice utility for macOS (M-series). I built this for two reasons: first, I wanted to see how far I could push cheap AI, and second, I wanted to use this utility. The idea was born out of using Emacs packages with Whisper to dictate to my machine. I had found it effective to simply speak and articulate context to coding agents. OneSentence does four things well: privacy, speech-to-text, text-to-speech, and template insertion.The development process was probably the most interesting part. I used Gemini 3 Pro Preview and 3 Flash Preview almost exclusively (yes, it was not Claude). It went from chatting to writing light specs and decomposing to tasks, t

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Website: www.onesentence.app