Sundar Pichai’s breakthrough AI upgrade just hit Google’s Gemini Ultra tier—here’s what you need to know.
Key Takeaways:
- Gold-medal pedigree: Deep Think matched IMO top performers in math.
- Ultra-only release: Available now for Gemini Ultra subscribers on desktop; mobile rollout soon.
- Step-by-step access: Select “2.5 Pro” model, tap “Deep Think,” then submit your prompt.
- Expert-focused: Mathematicians get the full 2.5 Deep Think model for research.
Google just flipped the switch on a game-changing feature for its most devoted AI users. On August 1, 2025, CEO Sundar Pichai announced that Deep Think—a version of Google’s Gemini 2.5 model that clinched a gold medal at the International Mathematical Olympiad—is now available to Ultra subscribers in the Gemini app. The official, unrestricted version is already in the hands of professional mathematicians tackling complex proofs and scientific literature.
Imagine an AI that doesn’t just answer questions but truly reasons through them. That’s the promise of Deep Think. According to Pichai, Ultra users can “toggle it on when reasoning through complex scientific literature [or] tackling a coding problem” and expect elite-level performance.
How to Unlock Deep Think:
- Open the Gemini app and choose 2.5 Pro from the model dropdown.
- Tap the Deep Think icon in the prompt bar.
- Type your query and hit submit.
This feature is live on desktop today via gemini.google.com, with a phased rollout to mobile devices over the coming days, as the Gemini team confirmed in a follow-up tweet from @GeminiApp.
Ultra users, ready to Deep Think?
— Google Gemini App (@GeminiApp) August 1, 2025
Here's how:
1⃣ Select 2.5 Pro from the model drop down
2⃣ Tap ‘Deep Think’ in the prompt bar
3⃣ Type your prompt & submit
Deep Think is available on desktop at https://t.co/382WL5xkFE and is rolling out to mobile over the coming days.
Let us… pic.twitter.com/RUh67Mf3yN
Beyond the Ultra tier, Google DeepMind is spotlighting Deep Think’s advanced reasoning toolkit: parallel thinking and reinforcement learning techniques that “brainstorm” alongside you rather than simply respond. In a message to researchers, Google DeepMind highlighted how mathematicians have already pushed the model to its limits, exploring novel approaches to longstanding problems.
Senior Google AI Fellow Jeff Dean added that Deep Think’s debut isn’t just a marketing stunt. “Starting today, we’re offering Deep Think in the Gemini app for Google AI Ultra subscribers,” he tweeted, “and giving a collection of mathematicians access to the full version of the Gemini 2.5 Deep Think model that achieved gold medal🏅 level performance in the recent IMO competition.”
Why It Matters:
For developers, scientists, and academics, Deep Think represents a leap forward in AI-assisted exploration. Instead of plain Q&A, the model can suggest multiple angles on a problem, detect subtle assumptions, and even propose creative experiments. In fields where nuance matters—think advanced physics or theoretical computer science—this could shave weeks off research timelines.
From a user psychology standpoint, offering Ultra subscribers an “insider” tool taps into the desire for exclusivity and mastery. Early access to a gold-medal-caliber AI positions subscribers not just as spectators, but as collaborators in frontier research. Google’s roll-out strategy balances excitement (desktop launch) with anticipation (mobile coming soon), keeping users engaged and eager to explore.
Google’s Vision
- Mobile launch: Expect Deep Think on iOS and Android by mid-August.
- Expanded domains: Google hints at rolling out similar “Deep” features for other specialty tasks, like legal drafting and biomedical analysis.
- Community feedback: Ultra users will be invited to share their most remarkable Deep Think outcomes, with top use-cases featured in a showcase later this year.
This is more than a model update—it’s a statement. Google is signaling that the future of AI isn’t just about retrieving information, but about structured, creative reasoning at a world-class level. If you’re already a Gemini Ultra subscriber, dive in. If not, now might be the time to upgrade and see how far Deep Think can take you.