微軟採用 MAI-1 削減成本，但 GPT-5.6 仍是'首選'
openai 指定 gpt-5.6 為 microsoft 365 copilot 的首選模型，反駁了有關微軟正轉向成本更低的內部 mai 模型的報導。
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.