Sam Altman’s OpenAI Is Officially the World’s Most Valuable Startup at $500B

observer.com/2025/10/sam-altman-openai-500b-valuation

OpenAI has reached a new milestone: a $500 billion valuation that makes it the world’s most valuable private company, surpassing Elon Musk’s SpaceX and widening the gap with other major private companies like its direct competitor, Anthropic, and TikTok parent ByteDance.
The staggering…

This story appeared on observer.com, 2025-10-02 23:33:34.
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