Anthropic’s confidential filing for a US IPO signifies a major move in the AI industry’s race to go public, surpassing OpenAI in valuation and reshaping investor expectations amid a rising market.
Anthropic has quietly taken a decisive step towards the public markets, confidentially filing for a US initial public offering and beating OpenAI to the punch in a race that has become central to how investors may value artificial intelligence businesses.
According to reporting by Axios, The Associated Press and other outlets, the company behind Claude submitted its draft registration to the US Securities and Exchange Commission this week, allowing regulators to review the paperwork before Anthropic is forced to reveal the financial details to the market. The company has not yet disclosed how many shares it plans to sell or what pricing range it is considering.
What is already clear is the scale of the ambition. Anthropic’s latest private funding round, completed in late May, valued the company at $965bn after a $65bn Series H raise, placing it just short of the trillion-dollar mark and ahead of OpenAI on valuation. That is more than double the $380bn it was assigned in February, when it raised $30bn from investors including Blackstone, Brookfield, General Catalyst and Singapore’s GIC.
The filing alters the dynamics of the AI listing race. For months, OpenAI had been widely viewed as the likelier first mover, helped by ChatGPT’s far greater public profile and stronger consumer brand recognition. But Anthropic has moved first, and now the burden of disclosure falls on its rival. Sam Altman told CNBC that OpenAI was not focused on the timing of a flotation and would go public when the company judged the time was right.
Analysts see both risk and advantage in Anthropic’s move. PitchBook’s Harrison Rolfes has argued that filing first gives Anthropic a narrative edge, but it also means the company is the one exposing itself first to scrutiny over revenue, margins and growth assumptions. OpenAI, by contrast, may be able to study investor reaction before setting its own course.
The timing also matters because the broader IPO market has been improving. Dealogic data show that companies raised $87.5bn globally through late May, the strongest year-to-date total since 2021. Anthropic’s move follows closely after SpaceX’s own planned flotation, with some analysts warning that several enormous listings arriving in close succession could strain institutional demand.
Kat Liu, vice president at IPO research firm IPOX, told CNBC that filing after SpaceX could help Anthropic tap into strong appetite for AI and growth stocks while conditions remain favourable. Others, including D.A. Davidson’s Gil Luria, have warned that a crowded field of high-valuation listings could make it harder for each company to secure the pricing it wants.
Anthropic is selling more than a valuation story. Founded in 2021 by former OpenAI executives, the company has built its reputation around safety, reliability and controllability in frontier models. Its Claude assistant has become a serious rival in the enterprise AI market, particularly in coding and productivity tasks, where Claude Code has emerged as one of its most visible products.
The company’s rapid rise has not been without controversy. As its more capable tools have spread, investors have also begun to weigh the disruption they could bring to software and IT businesses, adding another layer of scrutiny ahead of a public listing.
For now, the filing remains confidential, which means the real test is still ahead. Once Anthropic’s paperwork becomes public, investors will get a clearer look at the numbers supporting one of the most striking valuations in the technology sector. Whether the market decides that near-trillion-dollar price tag is justified will depend on growth, profitability and whether the company can convince public investors that its business is ready for Wall Street’s demands.
- https://vocal.media/01/anthropic-just-filed-for-an-ipo-and-it-beat-open-ai-to-the-punch – Please view link – unable to able to access data
- https://www.axios.com/2026/06/01/anthropic-ipo-openai – Anthropic has confidentially filed for an initial public offering (IPO) with the U.S. Securities and Exchange Commission (SEC), positioning itself as a potential $1 trillion company. This follows a $65 billion Series H funding round, valuing the company at $965 billion, surpassing OpenAI’s valuation. The filing allows Anthropic to receive SEC feedback before publicly disclosing detailed information to investors. ([axios.com](https://www.axios.com/2026/06/01/anthropic-ipo-openai?utm_source=openai))
- https://www.tomsguide.com/ai/breaking-anthropic-just-filed-for-an-ipo-heres-what-it-means-for-claude-users – Anthropic, the developer behind the Claude AI, has confidentially filed for an IPO, potentially marking one of the largest tech IPOs in history following a $965 billion valuation. This strategic move is expected to significantly impact the AI industry and everyday Claude users. With IPO funding, Anthropic could accelerate Claude’s development, leveraging greater computing resources to enhance model capabilities and roll out features faster. Despite monetization objectives, the free Claude tier is likely to remain, helping Anthropic attract new users in a competitive landscape. ([tomsguide.com](https://www.tomsguide.com/ai/breaking-anthropic-just-filed-for-an-ipo-heres-what-it-means-for-claude-users?utm_source=openai))
- https://apnews.com/article/572bb6cc12053c7aa95f775285cf4b73 – Anthropic, a rapidly growing AI company, has confidentially filed for an initial public offering (IPO) with the U.S. Securities and Exchange Commission (SEC), signaling its intention to go public. The company recently secured $65 billion in private funding, raising its valuation to $965 billion, surpassing rival OpenAI in market value and revenue. Founded in 2021 by former OpenAI leaders, Anthropic develops the Claude chatbot and recently launched its latest AI model, Claude Opus 4.8, which offers improved performance in coding and professional tasks. The move positions Anthropic ahead of OpenAI and SpaceX in the race to go public, marking a potential revitalization of the IPO market. Experts view this development as reminiscent of the early internet-era IPO boom, raising questions about the sustainability of high tech valuations amid an AI bubble. Still, analysts argue that the underlying technology shows promise and growing demand, potentially paving the way toward artificial general intelligence (AGI). As public companies, these AI firms will soon be required to disclose earnings and investments, offering greater transparency to investors. ([apnews.com](https://apnews.com/article/572bb6cc12053c7aa95f775285cf4b73?utm_source=openai))
- https://fortune.com/2026/06/01/anthropic-confidentially-files-ipo-965-billion-valuation/ – Anthropic PBC has confidentially submitted draft paperwork for a public listing as it races longtime rival OpenAI to make a Wall Street debut as soon as this fall. The Claude maker recently raised $65 billion in a funding round at a $965 billion valuation, including the investment, eclipsing rival OpenAI’s value for the first time. Anthropic has seen a surge in demand as customers look to use its tools to streamline coding and other tasks. Anthropic and rival OpenAI have been one-upping each other in recent months as they’re both pursuing public listings. ([fortune.com](https://fortune.com/2026/06/01/anthropic-confidentially-files-ipo-965-billion-valuation/?utm_source=openai))
- https://techcrunch.com/2026/06/01/anthropic-files-to-go-public/ – Anthropic, the AI lab behind Claude, has filed confidentially for an initial public offering, the company said in a blog post Monday. The company, which is valued at close to $1 trillion, submitted a draft registration statement to the U.S. Securities and Exchange Commission for a proposed initial public offering. Anthropic has yet to list the number of shares or set the price. The filing comes less than a week after Anthropic raised $65 billion in a Series H funding round that pushed its valuation to $965 billion. ([techcrunch.com](https://techcrunch.com/2026/06/01/anthropic-files-to-go-public/?utm_source=openai))
- https://www.megamobilecontent.com/news/2026/06/02/anthropic-ipo-sec-filing-965-billion-valuation-openai/ – Anthropic has confidentially submitted a draft registration statement on Form S-1 to the SEC, setting the stage for what would be the largest IPO in AI industry history. The Claude developer is now ahead of OpenAI in the race to public markets, having filed first despite trailing its rival in total capital raised. The filing follows Anthropic’s $65 billion Series H funding round, which closed in late May and valued the company at $965 billion post-money. That figure surpasses OpenAI’s $852 billion valuation from its March funding round, making Anthropic the most valuable AI company in the world heading into a public listing. Samsung, SK Hynix, and Micron all participated in the round as strategic investors, a detail covered in our report on Samsung’s Anthropic investment and AI chip ambitions. The confidential filing process allows Anthropic to begin SEC review without immediately disclosing revenue, margins, or risk factors to the public. The number of shares to be offered and the price range have not been determined. Anthropic is targeting a public listing as early as October 2026, though the company cautioned in its statement that the timeline depends on market conditions. Anthropic’s annualized revenue reportedly crossed $30 billion as of April 2026, up sharply from roughly $9 billion at the end of 2025. The growth reflects surging enterprise demand for Claude across coding, research, and business automation. ([megamobilecontent.com](https://www.megamobilecontent.com/news/2026/06/02/anthropic-ipo-sec-filing-965-billion-valuation-openai/?utm_source=openai))
Noah Fact Check Pro
The draft above was created using the information available at the time the story first
emerged. We’ve since applied our fact-checking process to the final narrative, based on the criteria listed
below. The results are intended to help you assess the credibility of the piece and highlight any areas that may
warrant further investigation.
Freshness check
Score:
8
Notes:
The news of Anthropic’s confidential IPO filing is recent, with reports from June 1, 2026. The earliest known publication date of similar content is June 1, 2026. The narrative appears original, with no evidence of recycling from low-quality sites or clickbait networks. The article is based on a press release, which typically warrants a high freshness score. No discrepancies in figures, dates, or quotes were found. However, the reliance on a press release means the information is from Anthropic’s perspective, which may introduce bias. While the content is fresh and original, the potential bias from the company’s own release slightly reduces the score.
Quotes check
Score:
7
Notes:
The article includes direct quotes attributed to Axios, The Associated Press, and other outlets. However, the earliest known usage of these quotes cannot be independently verified. Without access to the original sources, it’s challenging to confirm the authenticity and context of these quotes. The inability to independently verify the quotes raises concerns about their accuracy and reliability.
Source reliability
Score:
6
Notes:
The narrative originates from a press release, which is a direct communication from Anthropic. While press releases provide firsthand information, they are inherently promotional and may lack objectivity. The article also references reports from Axios and The Associated Press, which are reputable news organizations. However, without access to the full articles, it’s difficult to assess the context and potential biases in their reporting. The reliance on a press release and the inability to fully verify the secondary sources slightly diminish the overall reliability.
Plausibility check
Score:
8
Notes:
The claims about Anthropic’s confidential IPO filing and its valuation are plausible and align with recent developments in the AI industry. The article mentions that Anthropic’s valuation has reached $965 billion after a $65 billion Series H funding round, surpassing OpenAI. This is consistent with reports from reputable sources like Axios and The Associated Press. However, the reliance on a press release and the inability to independently verify some claims introduce a degree of uncertainty.
Overall assessment
Verdict (FAIL, OPEN, PASS): FAIL
Confidence (LOW, MEDIUM, HIGH): MEDIUM
Summary:
The article reports on Anthropic’s confidential IPO filing and its valuation, with references to reputable news organizations. However, the reliance on a press release and the inability to independently verify some claims and quotes raise concerns about the accuracy and reliability of the information. The lack of independent verification sources further diminishes the overall credibility. Given these issues, the content does not meet the necessary standards for publication.