Fact

OpenAI — Equity Value: $135 billion

confirmed95% confidence

1 evidence check

Last checked: 3/31/2026

The source directly confirms both key components of the claim: (1) Microsoft owns 27% of OpenAI, and (2) this stake is valued at $135 billion. The source also confirms the context that this valuation is based on the PBC restructuring. The date context (October 28, 2025 publication) aligns with the claimed timeframe of 2025-10. All elements of the claim are explicitly stated in the source text.

Evidence — 1 source, 1 check

www.constellationr.com/blog-news/insights/microsoft-owns-27-openai-worth-135-billion(1 check)

confirmed95%primaryHaiku 4.5 · 3/31/2026

Found: Microsoft's 27% stake in OpenAI is worth $135 billion, based on OpenAI's recapitalization as a public benefit corporation (PBC). The source states: 'Microsoft's stake in OpenAI has a number: $135 bill…

Note: The source directly confirms both key components of the claim: (1) Microsoft owns 27% of OpenAI, and (2) this stake is valued at $135 billion. The source also confirms the context that this valuation is based on the PBC restructuring. The date context (October 28, 2025 publication) aligns with the claimed timeframe of 2025-10. All elements of the claim are explicitly stated in the source text.

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Record type: fact

Record ID: f_swFnF8WXew