Anthropic Files for IPO at $965 Billion Valuation — Racing OpenAI to Wall Street

When Anthropic was founded in 2021 by a group of former OpenAI researchers led by Dario and Daniela Amodei, it was widely characterized as the principled underdog — a safety-focused lab that prioritized getting AI right over getting it first. Five years later, the company has filed confidential IPO paperwork with the US Securities and Exchange Commission, positioned as the highest-valued private AI company on Earth at $965 billion.

The S-1 draft was submitted on June 1, 2026, just four days after Anthropic closed its Series H funding round — a $65 billion raise that set the post-money valuation and briefly placed the company’s implied worth above that of OpenAI. Goldman Sachs, JPMorgan Chase, and Morgan Stanley are expected to compete for lead roles on a deal that could be one of the largest technology IPOs in history.

The Numbers Behind the Filing

The financials Anthropic has shared with prospective investors tell a story of extraordinary growth velocity. The company’s annualized revenue run rate was approximately $4 billion in July 2025. One year later, that figure is projected to exceed $50 billion — a more than twelvefold increase in twelve months.

Q2 2026 revenue is expected to come in around $10.9 billion, more than double Q1’s figures. On a per-quarter basis, Anthropic is approaching profitability: the company has told investors it is “on pace for its first profitable quarter” — a milestone that, if achieved, would fundamentally reframe the narrative around AI lab economics. For years, the conventional wisdom was that frontier AI development was a capital-destruction enterprise requiring constant infusions of investor cash. Anthropic would be the first major frontier lab to suggest otherwise.

The revenue concentration, however, is notable. A substantial share of Anthropic’s income flows through Claude Code — its AI coding assistant — and through enterprise API contracts with Amazon Web Services, which has committed to making Anthropic’s models available through Amazon Bedrock. The Pentagon relationship, which generated significant revenue through defense applications of Claude, has been complicated by a supply-chain risk designation that is now the subject of legal proceedings. That overhang is one of the material risk factors investors will scrutinize carefully.

The Competitive Context: Leapfrogging OpenAI

Anthropic’s ascent from valued-but-distant number-two to market leader is a story driven largely by a single product: Claude Code. In a developer community that had largely assumed GitHub Copilot (backed by OpenAI) and Cursor would define the AI coding category, Anthropic’s Claude Code emerged as the preferred choice for agentic, multi-file, and long-horizon software engineering tasks. Enterprises running large-scale software modernization programs — migrating legacy codebases, performing security audits, automating testing workflows — found Fable 5 and its predecessors outperforming alternatives by margins that justified premium pricing.

OpenAI, meanwhile, has faced a more turbulent internal period. Product roadmap slippage, leadership changes, and a restructuring of its capped-profit model all created narrative uncertainty even as the company maintained strong absolute revenue. Sam Altman has described the AI landscape as shifting to a “new world order,” acknowledging that the dominance OpenAI enjoyed in 2023 and 2024 is no longer guaranteed.

The result is a reversal of fortunes that would have seemed unlikely two years ago. Anthropic, once a company that raised capital primarily through safety and ethics storytelling, is now the top revenue-generating AI lab, with a cleaner path to profitability and a higher implied valuation than the organization that effectively defined the modern AI era.

IPO Structure and Timeline

The confidential S-1 filing is the first formal step in a US public offering process. It allows Anthropic to begin the SEC review process privately — a mechanism created by the JOBS Act for companies with under $1 billion in revenue that has become standard practice for major tech listings regardless of size, as it avoids the public scrutiny of early-stage financial disclosure.

The public S-1 is expected to be filed in late summer 2026, with an institutional roadshow and pricing targeted for October. The listing is expected on the Nasdaq. The number of shares and offering price have not been set.

Both Anthropic and OpenAI are targeting a fall 2026 public debut, which sets up an unusual parallel where two of the most closely watched technology companies in history may be competing for investor attention simultaneously. For investment banks seeking lead mandates, the next several months represent one of the most significant underwriting opportunities of the decade.

For Anthropic, the race is not purely financial. Being first to public markets among the frontier AI labs would cement a narrative of operational discipline and organizational maturity. OpenAI’s IPO process has faced more visible complications, including questions about its governance structure following its transition from nonprofit to public benefit corporation.

What the Valuation Means

The $965 billion figure deserves some unpacking. It is based on a post-money valuation from a private financing round — a calculation that reflects what investors paid per share most recently, multiplied by total shares outstanding. It is not the same as an enterprise value derived from public market trading, and historically there has been a gap — sometimes significant — between late-stage private valuations and IPO pricing.

The relevant comparable is recent AI infrastructure valuations. At $965 billion, Anthropic’s implied market cap would place it ahead of Meta ($1.3 trillion at current prices) but below Microsoft and Apple. Whether public market investors are willing to sustain that valuation depends on a few key questions: Can the company maintain its revenue growth trajectory as the AI market matures? How durable is the Claude Code moat as Google, Microsoft, and others build competing coding products? And what is the path to sustainable profitability at scale?

The first profitable quarter, if it arrives on schedule, will go a long way toward answering the third question. The first two remain open in ways that will define the IPO story.

The Broader AI IPO Wave

Anthropic’s filing is a bellwether for a broader wave of AI company public listings that investors and analysts have anticipated since 2024. With H1 2026 venture funding reaching a record $510 billion — more than 60% of which flowed to AI-related companies — the pipeline of mature, well-capitalized AI companies approaching IPO-ready financials has grown rapidly.

Bending Spoons listed on Nasdaq in July 2026 at an $18 billion valuation. OpenAI’s own S-1 is expected to follow Anthropic’s public filing. Beyond the frontier labs, a cohort of AI infrastructure, developer tools, and vertical AI application companies is moving toward public markets.

The Anthropic IPO, if it prices successfully and trades well, will be interpreted as a green light for the broader wave. If it stumbles — whether due to macro conditions, investor skepticism about AI economics, or renewed concerns about the Pentagon designation — it could cool the entire category’s enthusiasm for public listings.

For now, the company that set out to build AI that is safe, beneficial, and interpretable is preparing to introduce itself to the retail investor as an $965 billion growth story. The idealism and the ambition, it turns out, are not mutually exclusive.