Introduction

To advance Gemini’s capabilities towards solving hard reasoning problems, we developed a novel reasoning approach, called Deep Think, that naturally blends in parallel thinking techniques during response generation. Deep Think enables Gemini to creatively produce multiple hypotheses and carefully critique them before arriving at the final answer, achieving state-of-the-art performances in challenging benchmarks such as Olympiad math (USAMO 2025), competitive coding (LiveCodeBench), and multimodality (MMMU), see more details at (Doshi, 2025b). We announced Gemini 2.5 Deep Think at Google I/O and launched an experimental version to trusted testers and advanced users in June 2025.

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