Google rolls out Gemini 3 Deep Think mode to AI Ultra subscribers for complex problem-solving

Google rolling out Gemini 3 Deep Think to AI Ultra

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 a few minutes to come back. Building on the Gemini 2.5 version introduced in August, Deep Think has marked improvements in the following benchmarks: In mid-November, Google said it needed "extra time for safety evaluations and input from safety testers." Google AI Ultra subscribers ($250/month) can now access "Deep Think" from the Tools menu when "Thinking" is set in the model dropdown.

Gemini 3 Deep Think is now available in the Gemini app.

Today, we're rolling out Gemini 3 Deep Think mode to Google AI Ultra subscribers in the Gemini app. This new mode delivers a meaningful improvement in reasoning capabilities, designed to tackle complex math, science and logic problems that challenge even the most advanced state-of-the-art models. Gemini 3 Deep Think excels on rigorous benchmarks like Humanity's Last Exam and ARC-AGI-2. This is because it uses advanced parallel reasoning to explore multiple hypotheses simultaneously -- building on Gemini 2.5 Deep Think variants that recently achieved a gold-medal standard at the International Mathematical Olympiad and at the International Collegiate Programming Contest World Finals. Ultra subscribers can try Gemini 3 Deep Think mode today by selecting "Deep Think" in the prompt bar and Gemini 3 Pro in the model dropdown.

Google Launches Gemini 3 Deep Think Mode for Ultra Subscribers | AIM

The system uses parallel reasoning to test multiple hypotheses, building on earlier Deep Think variants. Google has introduced Gemini 3 Deep Think mode within the Gemini app, offering advanced reasoning capabilities for complex problem-solving. "Gemini 3 Deep Think is now available in the Gemini app," wrote Tulsee Doshi, senior director of product management, in an announcement on December 4. The new mode is available to Google AI Ultra subscribers and is designed to handle complex math, science, and logic queries. Users can access the feature by selecting "Deep Think" in the prompt bar and choosing Gemini 3 Pro from the model menu. According to Google, Gemini 3 Deep Think demonstrates strong performance on benchmarks such as Humanity's Last Exam, where it scored 41% without tools, and ARC-AGI-2, where it reached 45.1% with code execution. The system uses parallel reasoning to test multiple hypotheses, building on earlier Deep Think variants that performed well in competitions like the International Mathematical Olympiad and the ICPC World Finals. Google recently launched the broader Gemini 3 lineup, positioning it as a step toward more capable AI systems. The company said Gemini 3 Pro outperforms Gemini 2.5 Pro, OpenAI's GPT-5.1, and Anthropic's Claude Sonnet 4.5 across benchmarks, including LMArena, Humanity's Last Exam, GPQA Diamond, and MathArena Apex. With expanded multimodal inputs, extended context windows and new planning tools, Google said Gemini 3 can be applied to tasks such as analysing research papers, translating handwritten documents, generating visualisations, and evaluating sports performance. The company also said Search's AI Mode now includes generative UI features and interactive simulations.

Google rolls out Gemini 3 Deep Think to AI Ultra subscribers

Google is rolling out Gemini 3 Deep Think mode to Google AI Ultra subscribers in the Gemini app to enhance reasoning capabilities for complex math, science, and logic problems that challenge advanced models. This mode provides a substantial boost in handling intricate tasks. It excels on demanding benchmarks, achieving 41.0 percent on Humanity's Last Exam without tools and an unprecedented 45.1 percent on ARC-AGI-2 with code execution. These results position Gemini 3 Deep Think as a leader in the industry for rigorous evaluations. The technology relies on advanced parallel reasoning, which allows simultaneous exploration of multiple hypotheses. This approach builds directly on the capabilities of Gemini 2.5 Deep Think variants. Those earlier versions recently met gold-medal standards at the International Mathematical Olympiad and the International Collegiate Programming Contest World Finals, demonstrating high performance in competitive mathematical and programming challenges. Ultra subscribers gain immediate access to Gemini 3 Deep Think mode. They can activate it by selecting "Deep Think" in the prompt bar and choosing Gemini 3 Pro from the model dropdown within the Gemini app.