最直观的是营销成本失控。完美日记的增长高度依赖营销投放，营销费用率常年居高不下，甚至一度超过 60%。随着小红书、抖音等平台流量成本逐年攀升，获客成本成倍上涨，烧钱换增长的模式在资本退潮、市场冷静的背景下，失去了可持续性。
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，详情可参考一键获取谷歌浏览器下载
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The numbers tell the story. ChatGPT reached 100 million users faster than any consumer application in history, hitting that milestone in just two months after launch. By early 2025, ChatGPT alone processes over 10 million queries daily through its web browsing feature. Perplexity has grown to millions of daily users who rely on it as their primary search tool. Google has responded by launching AI Mode, available in over 180 countries, which provides AI-generated answers above traditional search results.