OpenAI's annualized revenue at about $50 billion — $20 billion below prior assumption
OpenAI's annualized revenue figure of around $50 billion as of September 2026 — roughly $20 billion below the level investors and media had previously assumed — became known on October 8 through the Financial Times. The report triggered an immediate drop in AI and chip stocks. But the gap appears to have less to do with lost sales and more with an accounting question: whether revenue through cloud partners should be counted or not. In a sector facing a giant funding round and a planned IPO, the confusion revealed how vulnerable the market is to private figures that no one outside investor circles can verify.
What has actually changed
The Financial Times reported on October 8, 2026 that OpenAI's annualized revenue "peaked at about $50 billion" as of September, according to Yahoo Finance citing the paper (21e0ab43). The FT's own headline confirms the core of the finding: "OpenAI annualised revenues $20bn less than previously signalled" (872ee1c0).
It is worth being precise about what kind of figure this is. OpenAI has not "corrected" any public reporting — the company is private and does not publish accounts in this way. What happened is that a figure from a private investor presentation document began circulating, and it sits considerably below the $68–70 billion previously reported and cited. The sources disagree on that earlier figure: Yahoo Finance/FT put it at $70 billion (21e0ab43), while CNBC via Quartz/Yahoo Finance puts it at $68 billion (0b07ce64). The safe statement is a range of roughly $68–70 billion as the "previously assumed" level.
Why two such different figures?
The explanation, as relayed in the sources, is about comparability — not disappearing sales.
Anthropic, OpenAI's foremost competitor, includes, according to the FT, revenue from sales via cloud partners such as Amazon Web Services and Google Cloud in its annualized figures. OpenAI does not. When OpenAI investors tried to compare the two companies directly, they therefore added OpenAI's partner revenue (gross revenue from partner companies) to put the companies on an equal footing. That was the method behind the widely cited figure of $68–70 billion, according to a person familiar with the matter whom CNBC spoke with (0b07ce64, e93a6fd0).
CNBC's source is clear on the point: according to CNBC's reporting, the difference between the two revenue figures does not reflect any fall in sales (0b07ce64).
There is, however, a somewhat different account of how the $70 billion figure arose. Yahoo Finance/FT describes a process in which investors first tried to establish whether OpenAI's sales had reached $40 billion in August. When OpenAI later stated that revenue had grown 70 percent, investors applied that growth rate to the original August figure and landed on $70 billion (21e0ab43). The two explanations — partner revenue added for comparability, and $40 billion plus 70 percent growth — may well be parts of the same process, but the sources do not fully reconcile them. Common to both is that the higher figure was an investor calculation, not an official OpenAI account.
Daniel Newman, chief executive of Futurum Group, summed up the confusion bluntly: "Jesus. The entire OpenAI drama today was that people didn't know the difference between gross and net revenue," he wrote in a post on X, as reported by Stocktwits (e93a6fd0).
The market sold off — the same day
The reaction came quickly. In Thursday trading, Nvidia fell 2.9 percent, AMD 3.9 percent and Micron 4.8 percent, while the Nasdaq Composite lost 1.3 percent (8f7f3c48). The iShares Semiconductor ETF (SOXX) fell 3.4 percent in regular trading — its worst drop since September 14. In overnight trading, chip and cloud stocks turned slightly higher again, with SOXX up 0.03 percent (e93a6fd0).
Stocktwits framed the reaction as a re-ignition of AI bubble fears, among investors already asking themselves whether the industry's massive infrastructure investments can deliver adequate returns (e93a6fd0). That is an analytical frame from the source, not a conclusion — but it explains why an accounting-nuanced figure could move billions in market value in an afternoon.
Why the figures cannot be compared directly with Anthropic
One of the most debated consequences of the new figure is the ranking: at $50 billion in annualized revenue, OpenAI would sit below Anthropic's stated $65 billion in annualized sales, according to Yahoo Finance (21e0ab43). Yahoo Finance, however, provides no originally attributed basis for Anthropic's $65 billion figure in the available source material, so this figure too should be treated with caution.
More fundamentally: the two companies report under different methodologies. Anthropic's figure includes, according to the FT, revenue via cloud partners; OpenAI's does not. A direct ranking of "who is bigger" without adjusting for this does not compare like with like — this was precisely what investors tried to correct when they built the higher figure for OpenAI. At the same time, it means OpenAI's $50 billion is not automatically "less sales" than Anthropic's $65 billion; it is a question of what is counted, and the sources provide no basis for determining how the figures would look under a common methodology.
Why the figures are material right now
The timing is no coincidence. According to CNBC, OpenAI is in the process of seeking around $30 billion in a new funding round, with no final term sheet in place, and the round is driven by investor demand. The company is also reportedly preparing an IPO targeted at 2027, at a current valuation of $852 billion (0b07ce64).
In that context, the revenue figure is more than a curiosity: it is one of the key numbers that will underpin the valuation in both the funding round and a potential IPO. The investor presentation is also said to have shown third-quarter run-rate growth of 77 percent for the business overall and 107 percent in the enterprise segment — figures CNBC attributes to a person familiar with the presentation who wished to remain unnamed (0b07ce64). These are single-source figures, via a single outlet, and deserve corresponding caution.
What remains to be known
Several questions remain open. First, there is no public primary documentation: the FT article is behind a paywall, and everything else in the source material is secondary reporting on a private document. OpenAI itself has not published the figure in any of the available sources. Second, the earlier figure — $68 or $70 billion — and the exact mechanism behind it are not fully reconciled across sources. Third, Anthropic's $65 billion is unattributed at Yahoo Finance. And fourth, we do not know how this will play out in practice: whether investors in the funding round adjust the valuation, and how a potential 2027 IPO prospectus would define and document revenue in a way that makes this kind of confusion impossible.
What does appear reasonably well established is the core of the story: a privately calculated investor figure that added partner revenue for comparability was received badly by the market, chip and AI stocks fell noticeably in a single day, and the gap does not appear to reflect lost sales. It is a reminder that in a sector valued in the hundreds of billions on the basis of private figures, an accounting question can be enough to shake the entire market.