Anthropic's IPO Filing Signals Race to Lead Over OpenAI

The competitive AI arena is heating up as Anthropic, a leading AI safety and research company, has reportedly filed confidentially for an Initial Public Offering (IPO). This move signals a direct challenge to OpenAI, its prominent rival, as both companies vie for market dominance and significant capital investment. The race for funding in the AI sector has become increasingly intense, with both Anthropic and OpenAI reportedly aiming for valuations in the tens of billions of dollars.

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Profiles of the companies named in this story, with funding and a one-liner from our database.

Anthropic

Private / $100B+ est

Anthropic is an AI safety and research company building reliable, interpretable, and steerable AI systems, best known for the Claude family of models.

OpenAI

Private / $100B+ est

OpenAI is an AI research and deployment company dedicated to ensuring that artificial general intelligence benefits all of humanity.

Matthew Bloxham, a Senior Tech Analyst at Bloomberg Intelligence, discussed the implications of Anthropic's IPO filing, noting that the company's annualized revenue run rate was around $10 billion by the end of last year and could potentially reach $50 billion by the end of this year. Bloxham highlighted that companies like Anthropic are not only looking to raise capital but also to establish a strong market position by going public earlier than competitors.

The AI IPO Race and Investor Scrutiny

The current market environment for AI companies is characterized by intense investor interest, but also by a heightened level of scrutiny regarding revenue models and profitability. Bloxham drew parallels to the dot-com bubble, where companies were often valued based on future potential rather than current earnings. He suggested that investors are now carefully evaluating these metrics, looking for companies that can demonstrate sustainable growth and a clear path to profitability.

The full discussion can be found on Bloomberg Podcast's YouTube channel.

The analyst explained that while both Anthropic and OpenAI are seen as frontrunners in the generative AI space, their approaches to monetization and market strategy may differ. The decision for Anthropic to file for an IPO, especially confidentially, suggests a strategic move to secure capital and potentially gain a first-mover advantage in the public markets. This could put pressure on OpenAI to expedite its own public offering plans.

Valuation Metrics and Market Positioning

Bloxham touched upon the valuation metrics that investors are considering for these AI companies, noting that they are often looking at multiples of revenue. He indicated that some companies are valued at 20 times their sales, implying a significant premium based on future growth expectations. This suggests that companies with strong performance and a clear ability to scale their operations are likely to attract more investor attention.

The discussion also touched upon the broader market sentiment towards AI investments. While there is considerable excitement and capital flowing into the sector, investors are also becoming more discerning. Companies that can demonstrate robust revenue streams and a solid business model are expected to perform better in the IPO market. The competition between Anthropic and OpenAI is not just about technological advancements but also about capturing market share and investor confidence.

Risk and Diversification for Investors

Bloxham also offered insights into how investors might approach these high-growth AI companies. He noted that many portfolios are already heavily concentrated in the tech sector, particularly in companies that are enabling AI development, such as chip manufacturers. This concentration can lead to significant risk if these companies face challenges.

He suggested that investors might look to diversify their exposure to the AI boom by investing in companies that are either directly benefiting from AI advancements or are indirectly positioned to do so. This could include companies that provide infrastructure, software, or services that support the broader AI ecosystem. For instance, investing in a company like Nvidia (NASDAQ:NVDA), a key provider of AI chips, offers a different kind of exposure compared to investing directly in an AI model developer.

The conversation underscored the dynamic nature of the AI industry and the strategic decisions companies are making to secure their positions. Anthropic's IPO filing is a significant development that will likely shape the competitive landscape and investor sentiment in the months to come.

Anthropic IPO Filing Update: July 2026

Last updated: July 2026

Significant milestones have emerged since this article was published. Anthropic officially filed its S-1 confidentially with the SEC on June 1, 2026, and is targeting a Nasdaq listing in October 2026. Goldman Sachs, JPMorgan, and Morgan Stanley are serving as lead underwriters for an offering that could exceed $60 billion -- ranking among the largest IPOs in U.S. history. Anthropic's valuation has surged to approximately $965 billion following its May 2026 Series H-1 funding round, far above earlier estimates. Annual revenue has grown from a $9 billion annualized run rate in January 2026 to $47 billion by May, roughly 5x growth in five months. One complication: trademark litigation flagged in July 2026 adds a wrinkle to the path to listing, though bankers are pressing ahead with investor roadshow preparations. (Sources: CNBC, The Street, The Agent Report.)

Frequently Asked Questions

Has Anthropic officially filed for an IPO?

Yes. Anthropic filed its S-1 confidentially with the SEC on June 1, 2026. The public prospectus is expected ahead of a roadshow, with an October 2026 Nasdaq listing as the current target.

What is Anthropic's IPO valuation?

Anthropic's May 2026 Series H-1 funding round valued the company at approximately $965 billion. This reflects extraordinary revenue growth: from a $9 billion annualized run rate in January 2026 to $47 billion by May 2026 -- roughly 5x in five months.

Who are the underwriters for the Anthropic IPO?

Goldman Sachs, JPMorgan, and Morgan Stanley are the lead underwriters. If the offering exceeds $60 billion in total proceeds, it would rank among the largest IPOs ever listed on U.S. markets.

How does Anthropic's IPO compare to OpenAI's plans?

Anthropic has a clear head start: it filed its S-1 a week before OpenAI (June 1 vs. June 8) and is targeting an October 2026 listing. OpenAI's IPO is broadly expected to slip to 2027. Prediction markets on Polymarket currently give Anthropic approximately 87% odds of IPOing before OpenAI.