Google just rolled out Gemini 2.5 Deep Think to subscribers of its Google AI Ultra service. What makes Deep Think differentMost generative AI models respond instantly. For Humanity’s Last Exam, a test that measures expertise across science, math, and other domains, Deep Think achieved 34.8%. Source: GoogleAugust, a big month for AI model releasesGoogle’s new version of Deep Think comes at an interesting time. This puts Google in a race against time to establish Deep Think before the AI landscape shifts again.