OpenAI calls out Microsoft reliance as risk in investor document ahead of expected IPO


OpenAI CEO Sam Altman speaks during the BlackRock Infrastructure Summit on March 11, 2026, in Washington.
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In a document that resembles an IPO prospectus, OpenAI said its close ties with at 988 for support and assistance from a trained counselor.
WATCH: OpenAI renews focus on enterprise in all-hands meeting amid IPO push
