Google Search's AI Mode Now Runs on Gemini 3.7 Flash

Google Search's AI Mode is now powered by Gemini 3.7 Flash, according to a report from Search Engine Roundtable. The report's headline — "Google Search Using Gemini 3.7 Flash In AI Mode" — indicates the company has switched this conversational search surface to its Flash-tier model line.

The story comes from a trade outlet that tracks the search and SEO industry, and Google has not yet issued an official confirmation. AI Mode is the conversational interface inside Google Search where users ask questions in natural language and receive AI-generated answers.

Gemini 3.7 Flash belongs to the Flash line of the Gemini family, a tier positioned for fast responses and high-throughput usage — a natural fit for search, which handles high-frequency, massively concurrent queries.

For users, the model swap could mean faster answers, though it may also change the depth and quality of responses. For the SEO and content ecosystem, the underlying model powering AI Mode directly influences how traffic is distributed, which is why the change is drawing attention among search watchers.

The move is another sign that Google keeps iterating on the models behind its AI search surfaces. Model selection is one of the most visible levers in how AI Mode behaves, and putting a Flash-tier model behind a flagship search surface points toward a greater emphasis on speed and efficiency.

What to watch next: whether Google formally confirms the change, and how AI Mode's answer quality, latency, and content presentation shift under Gemini 3.7 Flash.