To enable deep think mode, you need to first switch the model to gemini 2.5 pro, and then select "deep think" below the input box. There is a fixed daily usage limit, but longer and more complex reasoning output is supported. Zhihu, a high-quality Q&A community on the Chinese Internet and an original content platform where creators gather, was officially launched in January 2011 with the brand mission of "allowing people to better share knowledge, experience and insights, and find their own answers." Zhihu relies on seriousness and professionalism.
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