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2026年11月，全球AI圈炸了——不是因为某家车企又发布了‘全栈自研智驾’，也不是因为哪家大厂突然宣布‘All in AGI’，而是谷歌在山景城总部低调却极具杀伤力地扔下了一颗技术核弹：Gemini 4 Hydrogen正式登场。没错，就在这个被业内称为‘大模型军备竞赛白热化元年’的2026年末，谷歌没有搞花里胡哨的发布会，而是用一行干净利落的公告+一套实打实的基准测试数据，把‘Gemini 4 ...
2023年前后，推荐系统行业里流行一句话：上线前先问问AI用户怎么看。听起来挺合理。毕竟真实的A/B测试太贵了，一个推荐策略改坏了，可能几天内就损失一大笔点击率和用户留存。如果能先找一个"假用户"帮你把关，省时省钱又安全。于是各家公司开始用大语言模型扮演用户，让它们在模拟环境里点来点去，提前预判新策略的效果。
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