HyperWhisper

HyperWhisper converts spoken language into text on macOS and Windows, providing real‑time streaming transcription with sub‑700 ms latency. It supports automatic language detection for over 100 languages and can operate entirely offline, keeping all audio data on the local device. Users can import audio or video files, and the system will transcribe them while automatically detecting silence.

The tool offers a custom vocabulary feature that lets professionals add names, acronyms, and domain‑specific terms to improve accuracy. It includes several preset transcription modes—such as meeting, email, code, legal, and medical—each applying tailored prompts to format the output, and users can also create their own modes. Hybrid processing lets users choose between local models for privacy or cloud APIs for speed, with access to more than nine providers and thirty transcription models.

HyperWhisper is positioned for users who need fast, accurate, and privacy‑focused speech‑to‑text capabilities without subscription fees. It provides a one‑time purchase option with lifetime updates, as well as a free tier for limited daily use.