Vertex AI Search: Gemini 3 Pro (Preview) for answer generation discontinued

Vertex AI Search: Gemini 3 Pro (Preview) for answer generation discontinued

The Gemini 3 Pro (Preview) model has been discontinued and is no longer available for answer generation. If you have been using that model, upgrade to the Gemini 3.1 Pro (Preview) model.

For information about available models, see Answer generation model versions and lifecycle.