Official documentation

Voice Chapter 8: Assist in the home today

Home Assistant project, Home Assistant blog, 2024

Read on October 17, 2026

What it is: The December 2024 Home Assistant blog post that describes the state of Assist, its Piper text-to-speech system, its local Whisper speech-to-text and the choice between cloud and local processing.
How much weight it carries: The project's own description of its software at the end of 2024, reliable for its design choices. It is dated, and the project has since added Speech-to-Phrase and other features.