Offline Speech to Text

If you want to judge the transcription quality before installing anything, the browser transcribe tool takes a file and hands back text. Fair warning: that tool runs in the cloud, so it needs a connection and isn't private. It shows you the output, nothing more.

The Superwhisper app is the offline version. It runs the same class of speech models directly on your Mac, Windows PC, or iPhone. The audio is processed on your own hardware and never touches the internet. That's the difference between a browser tool and something you can use behind a firewall.

Most speech to text tools ship your audio to a server. Your words cross the internet, get processed on hardware you don't own, and land in a log you can't see. You're trusting someone else's retention policy with everything you say.

Superwhisper works the other way around. The model loads onto your machine, your audio goes straight into it, and the text comes back out. Nothing leaves to be intercepted. This isn't a setting you switch on. The system is built this way from the ground up.

Because there's no network round trip, it also keeps working when the connection doesn't. On a plane, in a basement, on a hotel's flaky wifi, the transcription behaves the same whether you're online or not.

The offline models download once, then run locally for good. Apple Silicon Macs handle the largest local models comfortably, and the bigger the model, the closer it gets to cloud accuracy. English is the strongest, though it handles 100+ languages with automatic detection.

On older Macs, Intel machines, and Windows PCs, a mid-size model keeps things quick and is still accurate enough for daily dictation. You pick the size that fits your machine. If you want to compare the options before downloading, the transcribe tool shows the same model quality on a file of your own.

Security teams and people in classified environments don't get a choice about this. Audio can't leave the network, and that's a rule, not a preference. Offline mode gives them modern transcription with nothing crossing the perimeter.

Clinicians and lawyers handle sensitive material all day, from patient notes to privileged calls. With on-device processing there's no cloud vendor to vet and no extra data processor in the chain for the transcription layer. Superwhisper is SOC 2 Type II certified and HIPAA compliant, which is the formal side of the same story.

Travelers lean on it when the wifi is unreliable or absent. Developers use it to talk to coding tools while working on private codebases, without piping their voice through an outside service. When there's no voice data leaving the device, rules like GDPR and CCPA get a lot simpler to reason about.