Harvard Business School Case Collection
Working Paper No. 726-415
Date of Publication: September 2025
This short supplement follows the earlier case “OpenAI and Microsoft (A): Partnership or Alliance?” (726-372). It provides an update as of after July 2025 on the negotiations between OpenAI and Microsoft during OpenAI’s restructuring, focusing on how the evolving partnership and governance choices affect control, ownership, and strategic options for both parties.

Citations

Alcácer, Juan, Raffaella Sadun, Tom Quinn, and Kerry Herman. OpenAI and Microsoft (B): Partnerships Heat Up. Harvard Business School Supplement 726-415, September 2025. (Revised December 2025.) Available at: https://www.hbs.edu/faculty/Pages/item.aspx?num=67994