Anthropic filed a confidential S-1 with the U.S. Securities and Exchange Commission in early June 2026, at a $965 billion valuation and roughly $47 billion in annualized revenue. The filing means Anthropic has beaten OpenAI to the SEC in the race to go public.
No IPO date is set, and the full document is not yet public. But the order of filing is a signal in itself: the safety-first challenger reached the regulator first.
What the filing confirms
The confidential S-1 locks in two numbers that had been reported but not formally documented: a $965 billion valuation and a $47 billion revenue run rate. A confidential filing lets a company begin SEC review without publishing financials to competitors until closer to launch.
The valuation matches the Series H round Anthropic closed at $965 billion in late May, suggesting the private and public-market prices are converging rather than diverging.
Goldman Sachs and JPMorgan are in early talks
Goldman Sachs and JPMorgan are in early conversations on the offering. Their involvement is the standard signal that a large-cap technology IPO is moving from possibility to process — these are the banks that underwrite the decade’s biggest listings.
Anthropic vs OpenAI: the IPO scoreboard
| Factor | Anthropic | OpenAI |
|---|---|---|
| S-1 filed | Yes (confidential) | Not yet |
| Valuation | $965B | $852B |
| Revenue run rate | ~$47B | Reported lower |
| Target listing | Q4 2026 | Q4 2026 |
| Key obstacle | None disclosed | Musk v. Altman trial; CFO timeline concerns |
The OpenAI timing problem
OpenAI has been expected to file, but its path is more complicated. CFO Sarah Friar reportedly warned internally that CEO Sam Altman’s timeline is “too aggressive.” The Musk v. Altman trial is actively complicating OpenAI’s IPO calendar, adding legal uncertainty that underwriters dislike.
Both companies target Q4 2026 listings, but only one has filed. The friction inside OpenAI is precisely the kind of distraction that lets a disciplined competitor move first.
What two S-1s will finally reveal
The real value of these filings is disclosure. Frontier-AI economics have been argued from leaks and estimates; S-1s will show audited revenue, gross margins, compute costs, and customer concentration. For the first time, the market will see whether a $47 billion run rate is profitable or subsidized.
That transparency cuts both ways. The filing that reaches investors first also gets scrutinized first — and Anthropic’s numbers will set the benchmark OpenAI’s are measured against.
Watch the valuation range in the eventual public filing. If it holds near $965 billion, the IPO becomes a referendum on whether AI revenue growth justifies near-trillion-dollar pricing.
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