OpenAI names GPT-5.6 Copilot's 'preferred model' to counter Microsoft breakup talk
OpenAI used its GPT-5.6 launch to name the model the 'preferred' engine for Microsoft 365 Copilot across apps like Word and Excel, a direct rebuttal to Bloomberg's report that Microsoft is shifting some workloads to in-house MAI models to cut costs. The label settles nothing concrete — 'preferred' doesn't bar Microsoft from routing more work to MAI — so the cost-driven drift toward first-party models stands, and the strain in the partnership is unresolved.
Source: techcrunch.com ↗
Our partnership with Microsoft has always been about bringing the benefits of advanced AI to more individuals and organizations, and we're excited to continue building on that shared commitment.
OpenAI
Why this matters
- → Microsoft continues diversifying away from OpenAI despite partnership theater.
- → Cost pressure is reshaping AI vendor relationships in enterprise software.
- → 'Preferred' label masks ongoing technical and financial recalibration between allies.
Partnership theater