Superwhisper
AI voice dictation app for Mac that transcribes speech to text in any application using local Whisper AI - private, fast, and works without an internet connection.
Superwhisper is a macOS voice dictation utility powered by OpenAI's Whisper model running locally on the device. A global keyboard shortcut activates recording in any active application - from Notion to Slack to VS Code - and Superwhisper transcribes the spoken text and types it out automatically. Local processing means audio never leaves the device, addressing privacy concerns that cloud-based dictation services create. For users who prefer speed over privacy, a cloud mode routes transcription through external APIs. Superwhisper supports custom vocabulary for domain-specific terms and offers multiple Whisper model sizes to trade off between transcription speed and accuracy. It launched in 2023 and is particularly popular with writers, developers, and anyone who types long-form content regularly.
Key Features
- System-wide dictation - transcribe voice to text in any Mac app via a configurable global keyboard shortcut
- Local Whisper AI processing - all audio stays on device, ensuring complete privacy with no data transmission
- Cloud mode option - faster transcription via external APIs for users who prioritize speed over local processing
- Custom vocabulary - add technical terms, proper nouns, and acronyms for accurate domain-specific transcription
- Multiple Whisper model sizes - choose between Tiny, Base, Medium, and Large for speed vs. accuracy balance
- AI post-processing - automatically adds punctuation and paragraph breaks to raw dictated text
Use Cases
- Writers who think faster by speaking - dictating first drafts of articles, emails, and documents hands-free
- Developers dictating code comments, documentation, and chat messages without switching to a keyboard
- Privacy-conscious professionals who need voice input in confidential work contexts without cloud exposure
- Accessibility users who need fast, reliable speech-to-text that works offline and across all applications
Pros
- Local Whisper processing means audio never reaches external servers - strongest privacy guarantee in dictation tools
- Works in any Mac application with a single shortcut - no app-specific plugins or browser extensions needed
- Multiple Whisper model sizes give explicit control over the speed vs. accuracy trade-off per workflow
Cons
- macOS only - no Windows, Linux, iOS, or Android support limits its reach outside the Apple ecosystem
- Local Large model transcription on older Macs is slow - M1+ chip or higher needed for real-time speed
- No team or enterprise features - strictly a single-user personal productivity tool
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