OpenAI Gets Kneecapped by a Major Investor at the Worst Possible Moment

OpenAI is suddenly fighting on three fronts at once, and its biggest backer is one of them. Microsoft (NASDAQ:MSFT | MSFT Price Prediction) just gave OpenAI a hard nudge toward the exit lane, even as it keeps a $135 billion stake in the company. The timing could not be worse for Sam Altman.

Three Pressure Points Converging

Enterprise ROI doubts. On May 25, Uber (NYSE:UBER)’s COO publicly questioned the return on enterprise AI spending, putting a CFO-level vocabulary around what many buyers were already whispering. When a marquee customer says the math is not working, every procurement team in the Fortune 500 leans in.

Microsoft’s quiet defection. On June 2, Microsoft unveiled two in-house models, MAI-Code-1-Flash and MAI-Thinking-1, designed to reduce reliance on OpenAI and lower costs. At the same time, Microsoft canceled internal Claude Code licenses inside its Experiences and Devices division and redirected those workloads to GitHub Copilot CLI, citing token-based billing costs. Reddit caught the signal fast. The viral “Microsoft reportedly cuts Claude Code for GitHub Copilot CLI” thread pulled 1,232 upvotes on r/wallstreetbets and pushed sentiment into bearish territory at a score of 39 on May 27.

Anthropic at the IPO door. Anthropic’s S-1 filing puts OpenAI’s most credible rival on a path to public equity markets first. Public capital, public scrutiny, and a public stock as M&A currency are exactly what a frontier lab needs in a capex war.

Why Microsoft Holds the Cards

The restructured partnership gives Redmond optionality OpenAI cannot match. Microsoft’s IP rights for OpenAI models extend through 2032 and now include post-AGI models, and Microsoft can independently pursue AGI alone or with third parties. OpenAI is contracted to purchase an incremental $250 billion of Azure services, so Microsoft gets paid even when its own models win the workload.

The numbers behind that confidence are loud. Q3 FY26 revenue hit $82.89 billion, up 18%, with Azure growing 40% and the AI business clearing a $37 billion annual run rate, up 123% year over year. Commercial RPO nearly doubled to $627 billion. Satya Nadella framed the position bluntly: “We are only at the beginning phases of AI diffusion and already Microsoft has built an AI business that is larger than some of our biggest franchises.”

What the Market Is Pricing

Shares trade at $411.81, with the stock down 13% year to date and off 7% over the past week. Yet Polymarket gives Microsoft a 60% probability of carrying a higher valuation than Anthropic and OpenAI combined by year-end 2026, with the highest-liquidity June price market clustering around $405 at 76% probability.

OpenAI is being squeezed on demand, supply, and capital access at the same moment its anchor partner is hedging. Watch GitHub Copilot CLI adoption, Anthropic’s pricing terms in the S-1 amendment cycle, and Azure’s next quarterly growth report for confirmation of where the leverage actually sits.