Microsoft replaces OpenAI's image-generating models with its MAI models in its products; Mustafa Suleyman says MAI models are ~85% cheaper to run in PowerPoint
Microsoft Corp. is replacing OpenAI's image-generating models with its own technology in popular products like PowerPoint and Bing.
Context & Ripple Effects
Microsoft’s move from experimenting with MAI in Copilot to replacing external models in productivity software has been building: earlier reporting said it was testing MAI replacements for OpenAI and Anthropic models in Excel and Outlook.
The image-model rollout follows MAI-Image-2’s strong text-to-image benchmark showing, giving Microsoft a quality signal alongside its stated cost rationale.
First-order effects
- Microsoft shifts image-generation workload in PowerPoint and Bing from OpenAI to MAI, reducing OpenAI’s role in those product experiences.
- At roughly 85% lower running cost in PowerPoint, MAI gives Microsoft a materially cheaper serving option for that feature.
Second-order effects
- The deployment strengthens the business case for Microsoft’s broader replacement testing in Office products, where lower inference costs can make internally run features easier to scale.
- OpenAI faces added pressure to preserve product deployments on performance, capability, or commercial terms rather than relying on Microsoft’s distribution alone.
Third-order effects
- If comparable quality and cost gaps persist, large AI product companies are likely to treat frontier-model suppliers as interchangeable inputs for more workloads, increasing their negotiating leverage.
- The shift points toward a more industrial model market in which owning distribution and optimizing inference economics can matter as much as access to a leading model.
The trend: Enterprise AI platforms are moving from dependence on a single model partner toward cost-optimized, internally controlled model portfolios.