Google has begun rolling out the Gemini 3 Deep Think mode to AI Ultra subscribers, offering enhanced reasoning for complex maths, science and logic tasks. The rollout follows last month’s preview during the Gemini 3 family release, allowing users to activate the mode directly within the Gemini app.
Deep Think builds on earlier Gemini 2.5 variants by utilising what Google refers to as parallel reasoning to test multiple hypotheses simultaneously. Early benchmark results show gains on structured problem-solving tasks, with improvements recorded on assessments such as Humanity’s Last Exam and ARC-AGI-2.
Subscribers can try the mode by selecting Deep Think in the prompt bar and choosing Gemini 3 Pro. Google states that the broader Gemini 3 upgrade enhances reliability when following lengthy instructions and reduces the need for repeated prompts during multi-step tasks.
Gemini 3 features stronger multimodal handling, enabling analysis of text, images, screenshots, PDFs and video. Capabilities include summarising lengthy material, interpreting detailed visuals and explaining graphs or charts with greater accuracy.
Larger context windows and improved planning support extended workflows such as research assistance and structured information management. Google describes Gemini 3 as its most secure model to date, with reinforced protections around sensitive or misleading queries.
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