A massive valuation for a "seed" round can be misleading. Often, insiders have participated in several unannounced, cheaper tranches. The headline number is just the final, most expensive tier, used to create FOMO and set a high watermark for new investors.

Anthropic may leapfrog OpenAI in valuation due to factors beyond technology. Investors are betting on its stable leadership and lack of public controversy, which has made it highly successful in recruiting senior executives from major tech companies.

The intense competition between Anthropic and OpenAI to IPO first is a key driver of their dramatic marketing. Announcements like Mythos are framed to build hype, secure a higher valuation, and gain a competitive edge in the public markets, where being the second to list could be a significant disadvantage.

The rush for OpenAI and Anthropic to go public is a strategic weapon, not just a financial necessity. The first AI leader to IPO can define market expectations for growth and valuation, putting immense pressure on the second company, which may have to compete against an already-established narrative.

OpenAI's $110B round, heavily funded by strategic partners, is pushing the limits of what private capital can provide. Even giants like Amazon and NVIDIA have finite free cash flow to invest. This exhaustion of private funding sources means the next logical step for companies like OpenAI, Anthropic, and SpaceX is a public offering.

Investing in a major AI lab like Anthropic has become a table-stakes branding move for VC firms. The logo signals relevance and is seen as essential for raising a firm's next fund, driving firms to join late-stage, party rounds just to get the association and avoid a "red flag" for their brand.

Despite massive operating losses, OpenAI is likely accelerating its IPO to get to market before Anthropic. This allows OpenAI to set the investment narrative and valuation benchmark, rather than reacting to a potentially faster-growing competitor's story.

Despite its massive price tag, Anthropic's valuation is justifiable on a forward revenue multiple basis. If they achieve another year of hypergrowth, their NTM revenue multiple would be lower than public tech companies like Palantir, making the current round look inexpensive.

The enormous private capital available to AI leaders, shown by Anthropic's $10B and xAI's $20B rounds, reduces the urgency to go public. This nearly unlimited appetite from private markets allows these companies to continue their aggressive growth and infrastructure build-outs without the regulatory scrutiny and quarterly pressures of being a public company.