Google is rolling out today Gemini 3 Deep Think inside the Gemini app for Google AI Ultra subscribers. What does this mean for you? Basically, a version of the assistant designed to think better about complex math, science, and logic problems that often trip up less advanced models.

What is Gemini 3 Deep Think

Gemini 3 Deep Think is an advanced reasoning mode added to Gemini 3. It’s not just faster at answering — it improves the ability to explore complex solutions using what Google calls parallel reasoning: the model generates and compares several hypotheses at the same time to find more robust answers.

Available today for Ultra subscribers: select Deep Think in the prompt bar and Gemini 3 Pro in the model dropdown.

Gemini 3 Deep Think shines on demanding benchmarks like Humanity's Last Exam and ARC-AGI-2. Its earlier variants (like Gemini 2.5 Deep Think) reached gold standards in high-level competitions such as the International Mathematical Olympiad and the ICPC finals.