Dictation in Lumo

Dictation lets you speak to Lumo instead of typing. Your words are transcribed into text in real time in the chat window.

Like the rest of Lumo, which keeps your conversations and data confidential, dictation follows the same standards of encryption and privacy. Transcription runs on Proton’s servers when you use Lumo on your browser, or on device when using the Lumo apps. Your voice and what you say are never stored or shared, and not even Proton can listen to it.

Dictation is available now for all Lumo users on both web and mobile.

In this article, we explain:

• Lumo speech recognition model and supported languages
• How to use dictation
• How to change Lumo dictation language

Lumo speech recognition model and languages

Lumo’s dictation mode uses Qwen3-ASR-1.7B, an open-source, automatic speech recognition model. It supports language identification for 30 languages and counting, including:

• English
• Arabic
• Chinese (in 22 dialects)
• Dutch
• Filipino
• French
• German
• Indonesian
• Italian
• Japanese
• Korean
• Spanish
• Thai

You can choose your preferred dictation language before using dictation mode for the first time, or set it to Auto-detect. If you’re logged in with a Proton account, your chosen dictation language will be saved until you change it.

How to use Lumo dictation

1. Go to lumo.proton.me(नई विंडो) or open the Lumo mobile app.

2. Tap the 🎤 microphone icon under the chat window.

3. If you’re using dictation for the first time, you’ll be asked to select your preferred language. Once you’ve made your selection, click Continue. If prompted, enable your device’s microphone settings to allow Lumo to access your microphone.

Dictation is now active and you can start talking to Lumo immediately. Once you’re done speaking, click the ✓ checkmark icon for Lumo to transcribe. To turn off dictation, click the X icon.

How to change Lumo dictation language

After you’ve chosen your dictation language, you can change it any time within your settings.

1. Go to lumo.proton.me(नई विंडो) or open the Lumo mobile app and log in with your Proton account.

2. Open Settings:

• Web: Click the Settings (⚙) icon in the bottom-left corner.
• Mobile: Tap the Menu icon (☰), then tap Settings (⚙).

3. Select General from the sidebar.

4. Under Dictation language, select the language you wish to switch to from the dropdown list.

Your preferred dictation language is now updated.