Fact · Dictation in your apps
Microsoft says Dictation in Office is set to your document language by default.
Checked against its source on October 17, 2026
In the source's own words
“By default, Dictation is set to your document language in Office.”
Dictate your presentations and slide notes in PowerPoint, Microsoft Support, 2026, Spoken languages supported.
Open the original- What it does not show
- Microsoft lists the supported languages separately, and Preview languages may have lower accuracy.