Google has launched Gemini 2.5 Deep Think for its ultra customers. This is considered a big step in the AI world. This feature was first shown at Google I/O 2025 and is now available for Ultra plan users with $250 / month. Deep Think is the advanced logic mode of Gemini 2.5 Pro, which can solve even extremely complex problems by thinking like multiple AI agents at once, such as advanced math, coding, or research.
Its biggest achievement was winning the gold medal at the 2025 International Math Olympiad (IMO), where the system was able to solve five complex problems in human-like language. Now it has been made more fast-paced and practical for customers.
What is Gemini 2.5 Deep Think?
This is a new logic mode of Google Gemini 2.5 Pro. It adopts the technique of solving more than one solution, colliding and improving ideas “in parallel” instead of solving things one by one like normal AI.
According to WebProNews, ” it’s as if many people are brainwashing, arguing, then getting the best answers.”
Main features:
Parallel thinking: tries several solutions at the same time, increasing creativity and reducing mistakes.
Multimodal input: works with text, audio, video and photos, with a huge reference window of 1 million tokens.
Human-like audio: answers in human-like voice in 24+ languages.
Google Search / code execution integration: for a more accurate and relevant answer.
Thought summary: especially in coding, AI will also tell your way of thinking that helps in debugging, correction or investigation.
Benchmark:
CodeBench V6: 87.6% (better score than GPT-4o)
Multimodal Reasoning: 84.0%
AIME 2025: 99.2%
What special for ultra customers?
Complex problem-solving: now users can make better use of AI for the complex challenges of maths, coding or business research.
Communication and transparency: thoght summary beneficial for both creative and technical users.
Speed and control: can set the “budget” of thinking (up to 32k tokens) – that is, how deep the model thinks.
Industry application: accurate and fast for healthcare, finance, education, scientific research, etc.
How to take full advantage of deep think?
How to start: go to the Gemini app, select Gemini 2.5 Pro from the Model dropdown and turn on the “Deep Think” toggle on the prompt bar.
Where to use: mobile or web, daily in fixed limits.
Examples of Use: code of complex web apps, analysis of Big Data, Creative Audio or graphics output, etc.
Best practices:
Keep the prompt clear and specific.
Read the thought summary and improve the prompt.
Adjust the thinking budget for speed vs depth.
Updates: Google will soon roll out API access and new features as well.
Challenges
Cost: $ 250 / month premium plan not possible for everyone.
Resource consumption:parallel thinking uses more computing, may come latency.
Competition: companies such as OpenAI GPT-5, xAI’s Grok 4 could also challenge soon.
Conclusion (Main Takeaway)
Gemini 2.5 Deep Think gives Ultra users a new kind of AI capability, a tremendous mix of logic, creativity and transparency. This brings the dream of Google’s “universal assistant” closer, especially in research, development and complex tasks.
What next?
Right now, the feature is only for select customers, but Google will soon give APIs to more developers and add new features in the coming months.
Check the Gemini app or Google DeepMind blog to explore it.
Share your thoughts or bookmark articles-this journey to Google AI is not going to stop yet!