Google has activated Deep Think for Gemini 3 within the Gemini app—created for complex, multi-step challenges that require thoughtful consideration over speed. Ultra subscribers can switch it on from the model selector. blog.google

What Deep Think changes

Deep Think requires Gemini 3 to evaluate more thoroughly before responding, aiding in synthesis, planning, code restructuring, and step-by-step analysis.

How to activate it (quick steps)

1. Open the Gemini app

2. Select Gemini 3 Pro

3. Tap Deep Think in the prompt bar

4. Pose a complex, context-rich question.

Where it’s available

Gemini 3 Pro is becoming available throughout the Gemini app and AI Mode in additional countries; Ultra (and sometimes Pro) subscribers receive higher limits and early features. Review your plan and region in the app.

Use cases for Canadian teams

• Quarterly planning and trade-off analysis

• Comparing policies and documenting decisions

• Code review and restructuring plans

• Risk management and mitigation strategies

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FAQ

Is Deep Think free?
No. It’s available in the Gemini app for Ultra subscribers using Gemini 3 Pro. blog.google

How do I activate it?
Select Gemini 3 Pro, then enable Deep Think in the prompt bar. blog.google

Does it work in AI Mode?
Gemini 3 features are expanding in AI Mode in more countries; confirm your region and plan. blog.google