Google now uses Gemini 3 Pro to generate some AI Overviews in Google Search. Google said for more complex queries Gemini 3 Pro is used for AI Overview.

This was previously announced for AI Mode results back in November and then in December Google began using Gemini 3 Flash for AI Mode. Now, Google is taking Gemini 3 Pro to AI Overviews for complex queries.

Gemini 3 Pro is used to generate AI Overviews for complex queries in English, globally for Google AI Pro & Ultra subscribers.

**What Google said. **Robby Stein, VP of Product at Google Search wrote:

• “Update: AI Overviews now tap into Gemini 3 Pro for complex topics.”
• “Behind the scenes, Search will intelligently route your toughest Qs to our frontier model (just like we do in AI Mode) while continuing to use faster models for simpler tasks.”
• “Live in English globally for Google AI Pro & Ultra subs.”

**Why we care. **The AI Overviews may be very different today than it was a week or so ago. Google will continue to improve its Gemini models and work those upgraded models into Google Search, including AI Overviews and AI Mode.

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About the Author

Barry Schwartz is a technologist and a Contributing Editor to Search Engine Land and a member of the programming team for SMX events. He owns RustyBrick, a NY based web consulting firm. He also runs Search Engine Roundtable, a popular search blog on very advanced SEM topics.

In 2019, Barry was awarded the Outstanding Community Services Award from Search Engine Land, in 2018 he was awarded the US Search Awards the "US Search Personality Of The Year," you can learn more over here and in 2023 he was listed as a top 50 most influential PPCer by Marketing O’Clock.

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