AI日报：昆仑万维发布SkyReels-A3模型；百度搜索PC端全面上线AI搜索；Grok 4 AI模型永久免费开放
【AI日报速览】1.昆仑万维发布SkyReels-A3模型，实现语音驱动数字人表演，支持60秒视频生成与专业运镜控制；2.xAI宣布Grok4永久免费开放；3.OpenAI发布GPT-5提示词指南，强化编程与多模态能力；4.百度PC搜索上线AI功能，月活用户超3.22亿；5.Windows Copilot接入GPT-5，使用限制更宽松；6.百川智能Baichuan-M2医疗模型全球评测第一；7.iOS 26将集成ChatGPT-5；8.谷歌推出3D编辑框架BlenderFusion；9.轻量级TTS模型Kitten TTS仅25MB；10.MiniCPM-V4.0移动端视觉模型表现优异；11.Stripe报告显示AI经济增速达SaaS三倍。（140字）
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