After previewing last month with the launch of Gemini 3 Pro, the new Deep Think mode is now available for Google AI Ultra subscribers. Deep Think is Google’s “most advanced reasoning mode” that leverages an advanced parallel reasoning technique to “explore multiple hypotheses simultaneously.” These “iterative rounds of reasoning” can result in “more refined, nuanced code” for better visualizations and prototyping. This is for complex math, science, and logic problems, with answers usually taking...