Google Rolls Out Gemini 3 Deep Think: AI's Most Advanced Reasoning Mode
Google Launches Gemini 3 Deep Think for Ultra Subscribers

Google has officially started the rollout of its most sophisticated artificial intelligence reasoning feature yet. The tech giant announced the launch of the Gemini 3 Deep Think mode, now available exclusively to its Google AI Ultra subscribers. This new capability marks a significant leap in how AI can process and solve intricate problems.

What is Gemini 3 Deep Think Mode?

According to Google, the Deep Think mode is engineered specifically to handle highly sophisticated challenges. This includes complex mathematics, advanced science queries, and intricate logic problems. The company states that this mode represents its most advanced reasoning capabilities to date.

The feature operates using a novel method. It employs iterative rounds of reasoning combined with advanced parallel processing. This allows the AI to explore multiple hypotheses and solution paths simultaneously. Google explains that this process leads to outputs that are more refined and nuanced.

"With Deep Think mode, Gemini uses iterative rounds of reasoning, resulting in more refined, nuanced code that helps you visualize, prototype and experiment with noticeably richer detail," the company said. This method is particularly beneficial for tasks requiring deep analysis, such as simulating complex 3D architecture or prototyping new ideas.

Leadership Announcement and Benchmark Dominance

Google CEO Sundar Pichai personally highlighted the launch on the social media platform X (formerly Twitter). He emphasized the model's power to manage highly complex queries, stating it "brings our strongest reasoning capabilities yet." He also shared an example showcasing its ability to simulate detailed 3D structures.

Google has backed its claims with impressive benchmark results. The company confirmed that Gemini 3 Deep Think is setting industry-leading standards on rigorous tests:

  • Humanity's Last Exam: The AI achieved 41.0% accuracy without using any external tools.
  • ARC-AGI-2: It reached an unprecedented 45.1% score with code execution enabled.

These achievements build upon the legacy of previous Deep Think versions from Gemini 2.5. That model recently performed at a gold-medal level in prestigious competitions like the International Mathematical Olympiad and the International Collegiate Programming Contest World Finals.

How to Access the New AI Power

For subscribers eager to test this new frontier in AI, access is immediate. Google AI Ultra users can start using the Gemini 3 Deep Think mode directly within the Gemini app. The process is straightforward: users need to select "Deep Think" from the prompt bar and ensure "Gemini 3 Pro" is chosen in the model dropdown menu.

This launch underscores Google's continued push to lead the generative AI race. By offering tiered access through its Ultra subscription, Google is making cutting-edge reasoning technology available to power users, developers, and enterprises who require the highest level of AI performance for complex problem-solving and innovation.