[UPDATE] Anthropic Says Its IPO Could Rival SpaceX's

When we wrote about Anthropic lining up investors for a fall listing, the open question was scale. Now there is a number attached, and it is a large one. On August 21, people familiar with the preparations told Bloomberg that Anthropic expects its initial public offering to match or beat the size of SpaceX's record $75 billion debut, and that it could file as soon as the end of this month.

The figure that makes bankers pay attention is revenue. Anthropic's annualized revenue reportedly reached around $65 billion by the end of July, a steep climb driven by enterprise spending on Claude and on the AI agents companies are wiring into their own software. A year ago that number would have read as a typo.

Why the timing

Two forces are pushing Anthropic toward the public markets faster than most people expected. One is appetite: investors have shown they will pay almost any price for a stake in a frontier lab, and a listing lets early backers and employees turn paper into cash. The other is cost. Training and serving frontier models burns through money at a rate private fundraising can only sustain for so long, and Anthropic has committed to compute contracts measured in the tens of billions.

A market with a lot riding on it

An offering this size would be a milestone for Anthropic and a test for everyone watching the AI trade. A record-breaking debut that then sags after the bell would hand the AI bubble skeptics a fresh data point. One that holds would tell the market that revenue, not just hype, is finally underneath these valuations.

For now the details are reported rather than confirmed. Anthropic has not published a prospectus, and plans of this kind can slip. What has changed since our last report is the ceiling. The conversation has moved from whether Anthropic will go public to whether it will do so at a size no private company has matched.