Gemini 2.5 Deep Think Rolls Out to Google AI Ultra Subscribers

Google Launches Gemini 2.5 Deep Think for AI Ultra Subscribers

At Squaredtech.co, we’re tracking the most important updates in AI—and this one stands out. Google has officially launched Gemini 2.5 Deep Think, its most advanced reasoning mode yet, for AI Ultra subscribers.

After debuting at Google I/O in May 2025, Deep Think is now rolling out to users of Gemini 2.5 Pro who are paying for the AI Ultra tier. The new feature is available via a button in the prompt bar, and it lets Gemini take extra time to process inputs and build more thoughtful, detailed responses.

Deep Think enables Gemini to generate many ideas at once, evaluate them simultaneously, revise them if needed, and combine them into a final answer. This means Gemini doesn’t just answer quickly—it thinks deeper and longer to deliver better results.

Google says it developed new reinforcement learning methods that help Gemini use these extended thinking paths effectively. As a result, Gemini is now able to reason across longer steps, solve harder problems, and improve over time with repeated use.

At Squaredtech.co, we see this as a major move in the AI space. Deep Think pushes Gemini from being just an assistant into something closer to a problem-solving collaborator.

Read More About Our Article of Google’s Gemini 2.0: A New Step in AI Reasoning. Published on December 20th, 2024 SquaredTech

Deep Think Improves Coding, Science, and Design Performance

The Gemini 2.5 Deep Think update brings measurable upgrades. According to Google, the system now scores 87.6% on LiveCodeBench, a competition-grade coding benchmark. That’s up from 80.4% when the feature was previewed in May.

Deep Think shows clear value in tasks that require step-by-step development. For example, in web design, it can improve both layout and code functionality. In science and mathematics, it helps formulate ideas and solve multi-layered problems, including reasoning through technical documents.

Google says Deep Think is especially strong in areas like:

• Iterative code writing
• High-level software design
• Mathematical conjectures
• Scientific research reading

The company even claims Gemini’s Deep Think can now match Bronze-level performance in the 2025 International Mathematical Olympiad (IMO). While earlier versions of this AI needed hours to hit gold-level scores, this release performs in real time—making it far more practical for daily use.

As editors at Squaredtech.co, we tested Deep Think in design and development workflows. In our experience, it delivered more useful output, caught logic flaws earlier, and responded with clearer explanations compared to standard Gemini 2.5 Pro sessions.

Gemini Deep Think Available Now to AI Ultra Users

To use Deep Think, users must be subscribed to the AI Ultra plan, which costs $249.99 per month in the U.S. Once enabled, Gemini 2.5 Pro users will see a new Deep Think button inside the prompt input area.

For now, Deep Think offers a limited number of prompts per day, both on mobile and web. This limitation helps control compute resources and maintain consistent quality as feedback continues to shape the product.

Google also plans to expand Deep Think testing through its Gemini API, offering versions with and without external tools. These builds will go to trusted testers in developer and enterprise environments over the next few weeks.

From a Squaredtech.co editorial standpoint, this signals Google’s intent to scale Deep Think beyond consumer AI tools, aiming for full adoption in enterprise and R&D workflows where problem-solving is critical.

Final Thoughts from Squaredtech.co

Google’s Gemini 2.5 Deep Think rollout marks a major moment in AI development. By giving the model more “thinking time,” Google has created a smarter assistant that doesn’t just react—it reasons.

For AI Ultra subscribers, this feature unlocks deeper conversations, stronger code support, and better design guidance. Gemini now handles complex inputs with multi-step planning, combining logic and creativity in real time.

Google’s own benchmark improvements show this isn’t just a performance tweak—it’s a leap in functionality. With Deep Think, Gemini 2.5 Pro becomes a tool for advanced users who want an AI that doesn’t just respond, but thinks with them.

We at Squaredtech.co believe this update moves Google closer to offering AI that can collaborate intelligently on real-world projects—from advanced coding to scientific discovery.

If you’re building complex systems, designing intricate workflows, or tackling tough math, Gemini 2.5 Deep Think offers value worth exploring. The subscription cost is high, but the functionality may justify it for users who rely on high-level reasoning tools every day.

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