OpenASR review
A broad open-source option for private, offline transcription across desktop, CLI, and API workflows.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
OpenASR is a local-first speech-to-text project for people who want offline transcription across desktop and developer workflows. Its macOS and Windows applications transcribe audio files, insert dictated text into the focused application, and display live captions from microphone or system audio. A Rust CLI and local HTTP API extend coverage to Linux and server-style use, while locally installed model packs handle speech processing. OpenASR does not require an account, and normal transcription uses no cloud backend or telemetry.
Platform breadth is a central strength. Users can choose desktop applications, offline CLI transcription, or a local HTTP and OpenAI-compatible transcription API without changing the core on-device approach. The local model catalog uses verified .oasr model packs, and speaker separation with optional Voice ID adds structure for recordings involving multiple speakers. This makes OpenASR a practical fit for users who value local processing but still need more than a single dictation window. The open core is released under the Apache-2.0 license.
The main trade-off is feature focus. OpenASR does not provide verified custom vocabulary or voice commands, so it is less suitable for users who need extensive terminology tuning or command-driven control. Its core is open source, but the macOS and Windows desktop applications are closed-source products built on that core. Choose OpenASR for local, offline transcription with desktop, CLI, and API options; choose an alternative if custom vocabulary, voice commands, or fully open desktop applications are essential.
OpenASR pros and cons
- Where it wins
- Runs transcription locally across macOS, Windows, and Linux
- Dictates into focused apps and provides live captions
- Offers CLI, local HTTP, and OpenAI-compatible API access
- Where it doesn't
- No verified custom vocabulary support
- No verified voice-command support
- Desktop applications are closed source
OpenASR fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update