Microsoft has acquired a 27% stake in OpenAI, valued at $135 billion. This investment marks a significant development in the ongoing partnership between the two companies. The announcement was made on October 28, 2025, via a blog post on Microsoft"s official website.
The partnership between Microsoft and OpenAI has been evolving, with Microsoft previously investing in OpenAI to enhance its artificial intelligence capabilities. This latest stake further solidifies Microsoft"s commitment to advancing AI technologies.
For more information on related developments, see recent developments in other sectors.
The collaboration is expected to drive innovation in AI applications and services, benefiting both companies and their users.








