微软采用 MAI-1 削减成本，但 GPT-5.6 仍是'首选'
openai 指定 gpt-5.6 为 microsoft 365 copilot 的首选模型，反驳了有关微软正转向成本更低的内部 mai 模型的报道。
openai announced that gpt-5.6 is the preferred model for microsoft 365 copilot, powering productivity apps like word, excel, and powerpoint. this statement directly addresses bloomberg reports that microsoft was increasingly deploying its own internal mai models to reduce dependency on openai and lower costs. although the partnership is reaffirmed, the terminology implies a shared ecosystem rather than an exclusive lock-in, signaling that microsoft is likely hedging its strategy with proprietary models.