Blitztext macOS Preview does not include a hosted backend.
When you use the online workflows, your Mac sends data directly to OpenAI:
- audio recordings for transcription
- transcribed or typed text for rewriting
- custom terms and prompt context if you configured them
When Sicherer Lokaler Modus is enabled and a WhisperKit/CoreML model is installed, transcription runs on your Mac and does not send audio to OpenAI. Rewriting workflows still require OpenAI and are paused while secure local mode is active.
You are responsible for your OpenAI account, API usage, costs, and data handling.
The app stores:
- your OpenAI API key in the user's macOS Keychain
- workflow settings in local app support storage
- optional WhisperKit/CoreML model folders in local app support storage
- temporary audio files while a transcription is being processed; the app attempts to delete each recording when the workflow ends or is cancelled
Workflow output may also be placed on your clipboard so it can be pasted into another app. Auto-paste marks the clipboard entry as concealed for compatible clipboard managers, but the generated text intentionally remains on the clipboard as a fallback if automatic paste is blocked. Clipboard managers, macOS, or other apps may still observe clipboard contents while they are present.
The app uses the system TLS trust store for OpenAI and Hugging Face requests. It does not currently pin certificates. A user-installed or managed root certificate can therefore affect HTTPS trust decisions on that Mac.
Settings such as custom prompts, custom terms, and context are stored in local app support storage as plain JSON. Do not put secrets into those fields.
Only transcription can run locally. Any workflow that rewrites, improves, or transforms text still uses OpenAI.
Do not use this preview with confidential, regulated, or highly sensitive content unless you have reviewed the code, your OpenAI settings, and your legal/privacy requirements.