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Details
- Google DeepMind has introduced Deep Think, a powerful new reasoning mode for its Gemini 3 model family as of December 4, 2025.
- This mode evaluates multiple solution pathways simultaneously, then ranks and merges them to generate a single, refined answer.
- Internal demonstrations show the model successfully coding an entire simulated dominoes game from just one natural-language instruction.
- Deep Think outperforms Gemini 3 Pro on major reasoning benchmarks, including Humanity’s Last Exam and ARC-AGI-2.
- The rollout starts immediately in the Gemini mobile app for Google AI Ultra subscribers, with web access planned in the following weeks.
- No additional processing delays are expected, thanks to optimized memory management with selective branch pruning.
- Google intends to make the mode available through the Gemini API in early 2026, offered at a premium pricing tier.
Impact
The Deep Think update puts pressure on rivals like OpenAI and Anthropic, as they prepare competing models focused on reasoning depth. By integrating such advanced capabilities directly into mainstream consumer apps, Google is narrowing the gap between cutting-edge research and everyday use. If latency stays low, this approach to parallel hypothesis reasoning could soon become the standard across enterprise AI platforms, fueling greater demand for memory-rich hardware.
