Microsoft reveals the true scale of its OpenAI investment — over $100 billion

Microsoft has revealed the true scale of its investments in OpenAI, exceeding $100 billion by June 2026. This figure is seven times larger than the officially announced sum of $13 billion, which the company has cited since early 2023.

How

Investors Count Investments On the surface, the figures appear contradictory, but in reality these are different calculation approaches. When Microsoft announces $13 billion, it primarily refers to direct capital investments in the OpenAI company. However, actual costs are much broader: they include not only shares and loans, but also operational expenses for using OpenAI's technologies in its own products and services.

Microsoft embeds OpenAI's models and APIs across all its platforms — from the Azure cloud service to office applications like Word and Excel. This requires continuous payments for model queries, use of computational resources, and infrastructure development for technology integration. Adding everything together — capital investments plus current expenses — yields $100 billion over three and a half years.

What the

Sum Includes Direct capital investments in OpenAI's development Payments for using models and APIs in cloud services Expenses for cloud infrastructure to integrate technologies Development of proprietary copilots and assistants * Licensing and technological partnerships ## Disclosure in Legal Proceedings The information surfaced unexpectedly — the company announced the figure in court rather than in an official press release. This suggests that Microsoft takes its AI investments seriously and is prepared to defend its interests in OpenAI at the legal level. Such a large sum also demonstrates the priority that the IT giant places on collaboration with ChatGPT's creators.

What

This Means For the market, this is a signal: investments in AI startups may be orders of magnitude larger than public statements suggest. The race among technology companies for leadership in generative AI carries a substantially higher cost than analysts and investors realize. Microsoft is betting on OpenAI and willing to pay top dollar for access to cutting-edge models and future technological breakthroughs.