Fact · Voice and AI
Home Assistant says you cannot use a language model as a fallback with Speech-to-Phrase, because unexpected commands cannot be converted into text for the model to process.
Checked against its source on October 17, 2026
In the source's own words
“because unexpected commands can’t be converted into text for the LLM to process”
Next iteration of our Voice Assistant is here (Voice chapter 10), Home Assistant project, Home Assistant blog, 2025, Speech-to-Phrase.
Open the original- What it measures
- This limit is the reason the project suggests Whisper for voice setups that include a language model.
- What it does not show
- A consequence of how the engine works, as the project explains it in June 2025.