Bullstory
Jun 7, 2026

Microsoft, OpenAI stake 27% retained ·1,350billion dollar valuation

Microsoft is developing its own AI models, inference systems, and infrastructure to reduce its dependence on OpenAI. The company is maintaining a stake of 27%, and that stake is valued at 1,350billion dollars. Some analysts assess this transition as favorable to investors.


Microsoft, OpenAI stake 27% retained ·1,350billion dollar valuation

The cooperation between Microsoft and OpenAI has deteriorated. Reports indicate that OpenAI may have potentially violated its exclusive contract with Microsoft by signing an infrastructure agreement with Amazon. The agreement relates to the provision of infrastructure.

Microsoft is developing its own AI models, inference systems, and infrastructure to reduce its dependence on OpenAI. The company is strengthening the AI capabilities of its Azure cloud service with its own technology. The development scope includes model design and data-processing infrastructure.

Microsoft maintains a stake of 27% in OpenAI. That stake is valued at 1,350billion dollars. The stake will continue to be held.

Some market analysts assessed that Microsoft's transition would reduce vendor risk and enhance Azure's competitiveness. Analysts at multiple institutions raised similar views. From the analysts' perspective, the implications for investors are being discussed.

Amazon has been mentioned as an infrastructure contract partner for OpenAI. The contract includes work related to the provision of cloud infrastructure. Because of the nature of the contract, whether the partnership is exclusive has become a point of contention.

The article reports developments by also citing companies' official additional announcements. Microsoft's in-house development plans and details of the OpenAI–Amazon contract were reported at the same time. Further disclosures and comments from the companies involved are expected to follow.

Sources: The Motley Fool

Bullstory synthesized this report from the linked sources. AI may have assisted the writing process. Check the original reports for factual confirmation.