Anthropic, OpenAI and the other AI labs on their way to public markets — when, at what valuation, and who goes first. Grouped so the two races can be read side by side.
November remains the clear landing zone, but December is quietly gaining ground as the fallback — a market that has swung across conviction tiers seven times cautions against treating November as a certainty, even at 82%.
An IPO announcement before February looks virtually certain, and the valuation window is narrowing — but a 23% bankruptcy probability within three years and ten prior conviction-rung crossings mean the market is pricing a company navigating genuine existential uncertainty even as it goes public.
The $1.75–$2.0T band leads at just 30%, with a surging $1.5–$1.75T challenger closing fast — what had been an unlikely scenario for the lower range is now probably not out of the picture, and a market that has crossed conviction rungs thirteen times offers no stable anchor for where the stock actually lands on day one.
After trading near certainty just three months ago, SpaceX's grip on the top slot has dissolved — Anthropic's surge to 45% means the AI challenger has effectively drawn even, turning what looked like a foregone conclusion into the year's most genuinely open financial race.
A public offering before year-end is now a near-dead scenario — leaving OpenAI's valuation a matter of private negotiation rather than market discovery for at least another year. The conviction has been volatile enough that a late-2026 surprise cannot be entirely dismissed.
With 14 conviction-rung crossings since tracking began, this market has been anything but stable — the current 92% reading is strong, but the drift away from mid-December dates toward a post-Thanksgiving window suggests traders are recalibrating the precise timing even as the annual deadline holds firm.
The money is now confident OpenAI will go public before Anthropic and likely above an $800 billion valuation, but the $1.5 trillion threshold has slipped from coin-flip territory to the less-likely side — and with Sam Altman's super-voting share odds collapsing, the governance structure at IPO remains genuinely uncertain.
What had been a likely call is now very likely — and the sharper move is in the nearer window, with a December announcement surging to 86%, suggesting the market thinks this is imminent rather than a slow walk to the deadline. The Iran-adjacent cluster attached to this event ID is unrelated noise; the Anthropic signal itself is clear and tightening.
No single date commands meaningful conviction, and the probability of no IPO by November 30 is quietly gaining ground — the window is real but the timing is genuinely uncertain, not a matter of logistics.
A sub-$1T outcome is now the single leading bucket but at just 23% — meaning the other three-quarters of the money is scattered across a wide range of higher valuations, with no consensus landing zone; the IPO itself is not expected before 2027, giving that uncertainty plenty of time to deepen.
The $85B–$95B band surged as a contender, tightening the range around a $95B floor — the money is converging on a blockbuster-but-not-stratospheric raise, quietly walking back the moonshot valuations that briefly circulated.
An Anthropic IPO would be among the most consequential market debuts in years, signaling that the AI boom has matured enough for public investors to price existential risk as equity — though this market has swung dramatically, crossing conviction boundaries ten times, and is not settled.
A blockbuster debut near $1.8 trillion has shifted from a lean-yes to a lean-no almost overnight, with the money now distributing more weight toward the $1.5–1.8 trillion range — suggesting the market still believes the IPO happens, just at a more sober price.
The window is narrowing fast — having peaked at 57% just three weeks ago, confidence in a pre-June 2027 listing has fallen sharply, and a 2026 debut is nearly ruled out entirely. OpenAI will almost certainly go public before Anthropic, but the timing is drifting later than markets recently assumed.
Confidence in a blockbuster debut remains firm at the floor — but a sharp retreat in contracts above $1.2 trillion suggests the days of trillion-plus euphoria are fading, and the realistic central case is now a range well below the most optimistic projections.
One of them going public first is now treated as near-certain; the live question is timing, with Anthropic priced at 90% to cross the line by end of 2026, suggesting the race may resolve sooner than markets coverage implies.
The money has never settled on a view — thirteen conviction-rung crossings since tracking began make this one of the most unstable markets on the board, reflecting genuine disagreement about whether OpenAI's path to public markets is clear or blocked.
A coin-flip split on one of the most anticipated listings in years reflects genuine uncertainty about whether Elon Musk will take SpaceX public on any predictable schedule — the money is not betting against it, but it is not betting on it either.
What had been merely unlikely a month ago is now very unlikely — Amodei's grip on Anthropic's governance structure through dual-class shares appears to be a casualty of the IPO process itself, suggesting the company is moving toward a conventional public ownership model, though this market's volatility warrants caution.
No boutique bank commands real conviction here — the field is bunched tightly enough that the co-underwriting syndicate could look very different from what any single probability implies, and William Blair's sharp drop signals the field is still being reshuffled.
What had been very likely is now likely — Mizuho's lead has softened, and the syndicate below it remains fragmented, with Allen & Company, William Blair, and Raymond James all jostling in a wide-open secondary bracket.
Control of OpenAI's governance structure looks likely to be distributed — or constrained — rather than concentrated in Altman's hands at the moment of listing, a notable signal about the board's appetite for founder-style dominance after a turbulent few years, with conviction having hardened sharply from a coin-flip just a week ago.