Google Unveils Gemini 3.5 Flash as Default AI Search Model Worldwide
Google has rolled out Gemini 3.5 Flash as the new default model powering AI Mode across Search globally, marking a significant upgrade to its AI-powered search experience.
A New Default
The announcement came during Google I/O 2026, where the company revealed that Gemini 3.5 Flash will now serve as the default model for everyone worldwide. The move follows increased use of its AI model by users globally.
“Just one year after its debut, AI Mode has surpassed one billion monthly users, with queries more than doubling every quarter since launch. As users discover how much more Search can deliver, engagement has soared to an all-time high,” Google said in a statement.
Redesigned Search Input
Google has also redesigned the Search input field with AI, giving users ample space to describe exactly what they need. The new AI-powered suggestions help users formulate nuanced questions, and the upgrade supports seamless cross-modality inputs.
Users can now use text, images, files, videos, or Chrome tabs simultaneously. The new AI Search box has been rolled out across all countries and languages where AI Mode is available.
Conversational Search
Users will be able to have seamless conversational flow on Search by asking a follow-up question right from an AI Overview on the search results page, flowing instantly into a conversational back-and-forth with AI Mode.
“Context is preserved throughout the interaction, continuously refining the relevance of supporting links and articles. This seamless experience is live today across both desktop and mobile devices worldwide.”
Agentic Booking
Google is also expanding agentic booking capabilities in Search to a wide range of new tasks, including local experiences and services. Users can input specific, multi-layered criteria — such as finding a private karaoke room for six on a Friday night that serves food late — and Search will consolidate live pricing and availability with direct booking links.
For categories like home repair, beauty, or pet care, users can ask Google to call businesses on their behalf. These capabilities will roll out to everyone in the U.S. this summer.
