Context
Google began rolling out Gemini 3.8 Live to Search Live on September 15, 2026. Google states that the model powers step-by-step, real-time troubleshooting inside Search Live and is rolling out to everyone on that surface.
What changed
The model layer behind Google Search Live changed to Gemini 3.8 Live, adding a newer real-time conversational model with visual grounding, multilingual switching, and background tool/API execution.
Why it matters
Search Live is an AI discovery surface that exposes web links during conversational voice interactions. A model-layer change creates a new measurement boundary for source selection, citation exposure, follow-up behavior, and multimodal discovery experiments.
Visibility OS interpretation
Visibility OS treats Search Live as a distinct discovery surface that should be measured separately from typed AI Mode and AI Overviews. The official announcement establishes the model rollout, but does not establish that ranking, retrieval logic, citation probability, or outbound traffic changed.
What remains uncertain
Did the rollout alter query formulation, retrieval, source selection, source diversity, citation/link exposure, or follow-up behavior in Search Live? Are any changes stable across languages and multimodal sessions?