OpenAI files for IPO, following Anthropic
OpenAI just filed for IPO. Here's why the timing matters for every AI investor watching.
Why it matters
OpenAI's confidential S-1 filing marks a watershed moment for AI company valuations—this is the formal start of what could be a multi-hundred-billion-dollar public market debut, with major implications for how the industry gets valued and how capital flows to AI infrastructure vs. apps.
The key facts
5 to knowOpenAI filed confidential Form S-1 with SEC on Monday, June 8, 2026
Follows Anthropic's confidential S-1 filing on June 1, 2026
Anthropic valued as world's most valuable startup in most recent fundraise
Confidential filing obscures executive compensation, business risks, and detailed financials pending public disclosure
IPO race between OpenAI and Anthropic spans past year of competition
Go to the source
The Verge AItheverge.com
Publisher excerpt: OpenAI on Monday checked off a preliminary step in the IPO race that it and rival Anthropic have been competing in for the better part of a year: The company announced it has confidentially submitted a Form S-1 with the US Securities and Exchange Commission, following Anthropic's decision to do the…