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Ethan He, former head of world model at xAI and key contributor to Grok Imagine video generation, announced his departure. He built the multimodal video model from scratch in three months after joining xAI in July 2025.
Google DeepMind 研究员 Lun Wang 离职并撰文批评现有 AI 评测体系，认为其落后于模型演化，无法预测新能力，导致业界处于「盲飞」状态。