One hotkey. Hold to dictate locally. Double-tap to send Claude a transcript and a screenshot for a polished reply.
Murmur collapses all of it to one hotkey. AI comes to your screen, not the other way round.
Whisper runs on-device, fixes punctuation, drops the result in the active field.
No API call.
Skip the copy-paste-to-ChatGPT round trip. Murmur sends the screen and your rough thought to Claude, drops the polished reply where you were already typing.
When the screen says it all. No retyping the question into ChatGPT. Double-tap, Claude reads what's in front of you and writes the reply.
api.anthropic.com with your transcript, discarded on receipt.~/.config/voice-reply/config.json), readable only by your user. No server to send them to.Unlike cloud dictation tools, Murmur talks directly to api.anthropic.com. There's no Murmur server in the middle.
Switch any time. Models cache locally; delete from the picker.
Teach Murmur your proper nouns. Add phrase = value lines to expand text on the fly.
Edit length, tone, formality. Saved instantly. No restart.
Unlock AI mode and Silent mode. Your key, your bill. $29 lifetime, with a 14-day trial.
Two months of Wispr Flow Pro costs more than a lifetime of Murmur.
| Murmur | SuperWhisper | Wispr Flow | VoiceInk | Aqua Voice | |
|---|---|---|---|---|---|
| Price | $29 lifetime | $249 lifetime | $144 / year | $25 lifetime | $96 / year |
| Brings AI to your active app | ✓ | ||||
| Tap to dictate, double-tap to polish | ✓ | ||||
| Silent polish (screenshot only) | ✓ | ||||
| Local transcription | ✓ | ✓ | ✓ | ||
| Active-window-only screenshot | ✓ | n/a | full screen | n/a | full screen |
| Direct to AI provider (no proxy server) | ✓ | n/a | n/a | ||
| Editable polish prompt | ✓ | presets | presets | n/a | presets |
| Multilingual | ✓ | ✓ | ✓ | ✓ | ✓ |
| Available on Windows / iOS | Mac only | ✓ | ✓ | Mac only | ✓ |
| Buy Murmur · $29 → | See full comparison → | See full comparison → | See full comparison → | See full comparison → |
Honest gaps for now: multilingual and cross-platform. Both are on the roadmap. See full side-by-side comparisons →
No. Whisper runs locally on your Mac via Apple's MLX framework. There's no streaming, no upload, no cloud transcription option. Both quick mode and AI mode transcribe on-device.
You double-tap and hold Right ⌘. Murmur captures a screenshot of the active window, transcribes your audio locally, and sends both (plus your customisable prompt) to Claude's API. Claude returns a polished reply, which Murmur pastes into the focused text field.
Only for AI mode and Silent mode. Quick mode (local Whisper dictation) needs no key and no internet. If you want polish, you bring your own key from console.anthropic.com. Murmur stores it locally; we never see it.
Quick mode is free forever. AI mode and Silent mode unlock with a one-time $29 lifetime licence (14-day trial first). You also pay your own Claude API costs, which for typical use run a few dollars a month.
Yes. Quick mode (local dictation, vocabulary, snippets, three Whisper tiers) is permanently free. No account, no signup, no time limit. The Pro licence only gates the AI features.
Quick mode does. Whisper runs entirely on-device. AI mode and Silent mode need an internet connection because they call Claude's API.
Only if you opt in to screen context, only in AI mode, only when you trigger a request. Murmur captures the active window, never the full screen, never other apps, never your desktop. The image goes to api.anthropic.com with your transcript and is discarded on receipt.
Not yet. Mac-only today (macOS 12+, Apple Silicon). Cross-platform is on the roadmap but not promised on a date.