OpenAI October valuation: what the live market says

The OpenAI October valuation market is a range-of-outcomes contract, not a direct quote for the company. On the live Polymarket page opened on Oct. 2, 2026, the leading outcome was "$1.00-$1.10T" at 41%, with a Buy Yes price of 41¢. The page also showed $9,596 in volume and an Oct. 31, 2026 end date. TechCrunch's Sept. 29 report is a separate source: it says OpenAI is in talks to raise at least $30 billion at a valuation of roughly $1.4 trillion. Those are different objects. This is not investment advice.

TL;DR - The favorite is "$1.00-$1.10T": a 41% card label and 41¢ Buy Yes price. - The $900B-$1.00T card says 21%, its FAQ says 22%, and its Buy Yes price is 22¢. Those values should not be averaged. - The $1.30T+ summary label is 16.7%, the outcome card says 17%, and Buy Yes is 19.7¢. - The page's market-context text is experimental, updated Oct. 2, 2026, 1:02 AM UTC, and explicitly has no role in resolution.

What actually happened

The OpenAI October valuation question is narrower than the fundraising headline. TechCrunch says Bloomberg reported that OpenAI was talking with investors about at least $30 billion in a pre-IPO funding round at a valuation of roughly $1.4 trillion. The article says investors wanted exposure before an anticipated public-market debut next year. It also says a strategic refocus on areas such as coding helped drive a 70% jump in run-rate revenue since July, reaching $40 billion in August, according to the report. TechCrunch says OpenAI did not respond to its request for comment. These are the figures and qualifications on that TechCrunch page, not Polymarket prices.

The same TechCrunch story says OpenAI raised $122 billion in March at an $852 billion valuation. That round was expected to be its last private raise before an IPO that had been expected in 2026. The article says CEO Sam Altman has ruled out a public debut in 2026 to prioritize AI safety, and it quotes his warning about taking a 10% chance of killing everybody by the end of the decade. TechCrunch describes the new fundraising, if it happens, as a bridge round to an IPO. In talks is not the same as closed, and roughly $1.4 trillion is not one of the central Polymarket buckets.

The live contract is split into nine outcomes. The visible rows showed <$600B at 5% with Buy Yes 10.4¢; $600-$700B at 5% with 10.0¢; $700-$800B at 1% with 1.0¢; and $800-$900B at 6% with 11.4¢. The next rows showed $900B-$1.00T at 21% with 22¢; $1.00-$1.10T at 41% with 41¢; $1.10-$1.20T at 17% with 19¢; $1.20-$1.30T at 8% with 12.7¢; and $1.30T+ at 17% with 19.7¢.

That list keeps labels and buttons in their own columns. The page's top summary displayed $1.30T+ at 16.7%, while its outcome row displayed 17%. Its FAQ described $900B-$1.00T as the runner-up at 22%, although the outcome card displayed 21%; the card's Buy Yes was 22¢. These are page elements that do not line up perfectly. The leading row is cleaner because its 41% label and 41¢ button agree. A recap should report the disagreement instead of manufacturing a blended probability.

What Polymarket thinks

Polymarket's page includes a market-context paragraph, but it labels that material “Experimental AI-generated summary referencing Polymarket data.” It says the text is not trading advice and plays no role in how the market resolves. The page says it was updated Oct. 2, 2026, 1:02 AM UTC. That status matters: the paragraph is context attached to the market, not a primary news report or a resolution rule.

The live blurb says, verbatim:

OpenAI’s push for a new bridge funding round targeting at least $30 billion at roughly $1.4 trillion valuation has anchored trader sentiment for its end-of-October 2026 mark, following the March close at $852 billion post-money. Strong revenue momentum, with annualized run rates reported near $40 billion in August after a 70% jump since July, supports expectations of modest uplift into the $1.0–1.1 trillion range that currently leads implied probabilities. The October 1 completion of SoftBank’s final $10 billion tranche from the prior round reinforces recent capital inflows, while CEO Sam Altman’s decision to delay any IPO until 2027 over AI safety concerns limits near-term public-market catalysts. Traders appear to weigh these growth signals against the early-stage nature of the latest talks and typical private valuation step-ups, positioning outcomes near $1 trillion as the consensus ahead of month-end resolution.

The sentence about a $1.4 trillion valuation is the blurb's wording; it does not say “pre-money.” That distinction matters because TechCrunch says “a valuation of roughly $1.4 trillion,” while the page's experimental paragraph gives its own framing. The blurb uses near $40 billion in August. Those statements belong to the blurb and should not be repeated as independently verified news facts. The exact notice says the summary has no role in resolution.

The contract itself points to a narrower reading than the headline rumor. The leading 41¢ Yes price belongs to a $1.00-$1.10T range. The $1.30T+ outcome is much wider, but its card is only 17% and its Buy Yes is 19.7¢. That does not prove the funding talks will fail; it shows only how this small market was priced when the page was opened. The $9,596 volume also argues for restraint. A few trades can move a displayed price, and a range outcome is not a single valuation midpoint.

The Gemini 4 Argon launch and October Fed odds are different markets with different resolution questions. They cannot supply evidence for this contract. The live page names a SecondMarket company-data URL as its resolution source, so the eventual result will depend on that rule set rather than on whether a headline sounds plausible.

What to do as a reader (not a trade)

Read the page as three ledgers. Ledger one is the contract: "$1.00-$1.10T" leads at 41% and 41¢, $900B-$1.00T shows 21% on its card but 22¢ for Buy Yes and 22% in the FAQ, and $1.30T+ shows 17% on its row, 16.7% in the top summary, and 19.7¢ for Buy Yes. Ledger two is TechCrunch: at least $30 billion in talks, roughly $1.4 trillion valuation, a March $122 billion raise at an $852 billion valuation, $40 billion run-rate revenue in August after a 70% rise since July, and no 2026 IPO. Ledger three is the experimental Polymarket blurb, which is explicitly not part of resolution.

Do not turn the favorite into “the market says OpenAI is worth $1.05 trillion.” The market says one range is currently the most prominent outcome. Do not turn the TechCrunch report into a completed financing. Its wording is in talks and if it transpires. Do not use the blurb's AI-generated synthesis as a news fact, and do not average a card label with a button price. The honest summary is that a thin, live contract favors the $1.00-$1.10T bucket while a separate report describes a much higher possible financing valuation. An OpenAI October valuation recap should preserve that separation.

Before repeating an OpenAI October valuation claim, check the page again: prices can change, the displayed date can pass, and the rules determine settlement. A reader can follow the market without trading. Nothing here is investment advice.