Microsoft Shifts Copilot Workloads to In-House MAI Models
July 8, 2026
Microsoft has begun replacing OpenAI and Anthropic models with internal MAI models for Excel and Outlook workloads. This move targets improved unit economics for Copilot and represents a practical off-ramp from third-party model dependencies.
HOW THIS AFFECTS YOU
●
founderWatch for shifts in how platform giants handle model margins and third-party dependencies.
●
investorThis signals a transition toward vertical integration that could improve Microsoft's AI service margins.