Microsoft shifts Copilot traffic to MAI models for cost optimization
Key Questions
Why is Microsoft routing Copilot traffic to its own MAI models?
Microsoft is shifting selected prompts in Excel and Outlook from OpenAI/Anthropic to internal MAI models to reduce costs, treating frontier models as replaceable infrastructure.
What does Suleyman's quote indicate about Microsoft's long-term plans?
The 'reduce and eliminate' comment signals intent to minimize reliance on external models over time, while still maintaining ties such as GPT-5.6 as the preferred model in other apps.
How might the MAI model shift affect enterprise users?
The change could influence performance, pricing, and governance considerations, with a bifurcated strategy where GPT-5.6 remains preferred across most M365 Copilot apps.
Microsoft is quietly routing Copilot prompts from OpenAI/Anthropic to its own MAI models in Excel and Outlook to cut costs, confirmed by Bloomberg and a new article detailing scope and Suleyman's 'reduce and eliminate' quote. This is not a divorce but a cost-optimization play, treating frontier models as replaceable infrastructure. Suleyman's 'reduce and eliminate' quote signals long-term intent. Signals potential changes in performance, pricing, and governance—important for adoption planning and enterprise risk posture. First seen this week, now confirmed with multiple sources. Note: GPT-5.6 is now the preferred model for other M365 apps, indicating a bifurcated model strategy.