Starting August 1, Gemini AI officially launched the revolutionary Google Gemini 2.5 Deep Think mode. This cutting-edge feature is only available to Google AI Ultra users who pay 250 per month, marking the first publicly available multi-agent reasoning model open to the general public. The AI system, which won a gold medal at the 2025 International Mathematical Olympiad (IMO), is set to redefine the boundaries of human–AI collaboration.Let’s check out the details with AGIYes.
Main Features of Google Gemini 2.5 Deep Think
The most eye-catching innovation of Deep Think mode is its multi-agent parallel-thinking architecture. Unlike traditional single-model reasoning, the system can simultaneously launch multiple AI “thinking threads” to analyze a problem from multiple angles and then synthesize the optimal solution. This mechanism is particularly suited to complex problems that require multi-dimensional consideration, effectively avoiding the limitations that can arise from a single line of thought.
In practical applications, Deep Think demonstrates astonishing ultra-long continuous reasoning ability. According to Google’s official disclosures, the system can keep thinking for hours without interruption. This trait makes it especially outstanding in scenarios requiring deep thought, such as advanced mathematical proof, cutting-edge scientific research, and large-scale programming projects. A participating MIT researcher noted during the closed beta: “It’s like a tireless research team that can maintain high concentration for hours—something almost impossible for humans.”
Deep Think in the Gemini app uses parallel thinking techniques to deliver more detailed, creative and thoughtful responses.
Deep Think is not just a thinking engine; it also comes with a complete intelligent-tool ecosystem. The system can automatically invoke a code-execution environment, real-time Google Search, and specialized calculation tools according to the task’s needs, forming a closed-loop problem-solving capability. On the output side, it breaks through the traditional length limits of AI, generating lengthy, well-structured, rigorously logical professional treatises.
In multimodal processing, Deep Think also excels. The system supports mixed input of text, images, audio, and video, and is paired with a context window of up to one million tokens, enabling it to handle extremely complex cross-media information. This ability allows it to shine in creative-design fields; whether it’s web-prototype design, algorithm optimization, or business-strategy planning, the system can output professional-grade solutions through iterative refinement.
Gemini 2.5 Deep Think Benchmark Results
On the authoritative LiveCodeBench programming benchmark, Deep Think set a new record with an astonishing 87.6 % accuracy, firmly securing the industry’s top spot. Even more impressive, on the “Humanity’s Last Exam” test that simulates overall human capability, it scored 34.8 %, leading competitors such as Grok 4 and ChatGPT o3.
Particularly noteworthy is its mathematical ability. The gold-medal version, specially optimized for IMO competitions, scored 35/42, while the public regular version still reaches International Mathematical Olympiad bronze-medal level. This professional-grade mathematical capability makes it an ideal assistant for researchers and competition participants.
Image Credits:Google
Gemini 2.5 Deep Think Pricing and Subscription
Currently, the Deep Think feature is only open to Google AI Ultra subscribers at 249 per month. New users can enjoy a 50 % discount for the first three months. Users simply select the “2.5 Pro” version in the Gemini App and toggle the “Deep Think” switch to experience this cutting-edge technology.
In terms of usage, the system sets a daily free prompt limit; once exhausted, users must wait until the next day for a refresh. Google also announced that in the coming weeks it will open testing permissions through the Gemini API to trusted developers, foreshadowing the emergence of even more innovative applications.
Target Users and Alternatives for Gemini 2.5 Deep Think
Deep Think is aimed primarily at high-end professional user groups, including senior programmers, academic researchers, professional competition participants, and creative workers who need deep reasoning support. For ordinary users, Google recommends first experiencing the basic functions of the Gemini 2.5 Pro version, which does not require an Ultra subscription and already meets most everyday needs.
With the launch of Deep Think, Google has once again established its leading position in the AI race. This system, which integrates multi-agent reasoning, ultra-long-duration thinking, and professional tool invocation, not only showcases entirely new possibilities in AI technology but also provides an unprecedented intelligent partner for humans tackling complex problems. At a time when AI technology is advancing daily, Gemini 2.5 Deep Think may mark the arrival of a new era of human-machine collaboration.
