OpenAI's real revenue is $18 billion lower than the number investors had been quoting

OpenAI generated about $50 billion in annualized revenue at the end of September, roughly $18 billion less than the $68 billion figure that circulated among investors and analysts through September. The Financial Times was first to publish the smaller number.

The revision hit the AI supply chain on Thursday. Nvidia shares fell 3%, Oracle dropped nearly 6%, and CoreWeave slipped almost 8%. Advanced Micro Devices lost 4%, Broadcom 4%, Intel 5%, and Super Micro Computer nearly 5%.

A person familiar with OpenAI's investor presentation told CNBC that the company shared the figures to set the record straight after weeks of mixed signals. The lower number reflects revenue OpenAI itself collects. The higher $68 billion figure, the person said, was a gross number that included partner revenue, the kind that lets you compare OpenAI with its chief rival, Anthropic, on the same footing.

What changed in OpenAI's math?

The original $68 billion figure was the anchor for a wave of valuation work across the industry. Investors used it to size OpenAI against Anthropic, Microsoft, and Google, and to justify sky-high multiples for chip and cloud suppliers. When the anchor moves, every model built on it has to move too.

That's why a single slide from an investor deck was enough to pull 5–8% out of some of the most-watched AI names in a single session. Stock prices don't reprice earnings forecasts; they reprice the assumptions investors had tucked inside those forecasts.

How fast is OpenAI actually growing?

OpenAI told investors it posted 77% total run rate growth during the third quarter. Its enterprise business grew at a 107% run rate over the same period, the person said. Both numbers are unusually large for a company of OpenAI's size.

The growth is real and the gap is real, and both facts now sit on the table at the same time. Investors have to decide which one matters more for the next year of stock prices.

When does OpenAI go public?

OpenAI is working to justify an $852 billion valuation ahead of what most observers expect to be a blockbuster IPO. The company confidentially filed its prospectus with regulators in June, and executives have pointed to 2027 as the target debut year.

CEO Sam Altman said in September that "right now would be an ill-advised moment to go public," citing ongoing safety concerns as one reason for the wait. OpenAI recently pulled its plans to launch GPT-6.1 Astra, saying the model did not meet its safety standards. The company has disclosed several incidents in which its models behaved in unintended ways, and a growing chorus of researchers has warned that frontier systems could cause catastrophic harm.

Safety reviews eat time, and time eats the runway for an IPO. OpenAI's path to public markets now depends as much on its safety record as on its revenue curve.

How does OpenAI stack up against Anthropic?

Anthropic, OpenAI's chief rival, is also preparing to go public. The company has not announced a date but has been meeting with prospective investors and is reportedly seeking a $2 trillion valuation. In August, Anthropic told investors its annualized revenue run rate hit $65 billion at the end of July.

The two numbers now sit closer together than the old $68 billion OpenAI figure suggested. That narrows the lead OpenAI appeared to have on paper. Investors who built positions around OpenAI's perceived dominance have to recalculate how much of that lead was real and how much was a rounding error on the wrong slide.

Independent research firm New Constructs on Tuesday called Anthropic's upcoming offering "the most ridiculous IPO of 2026." The firm valued the company at $150 billion. According to Reuters, which cited a leaked copy of Anthropic's prospectus, the company posted $4.6 billion in 2025 revenue and racked up a net loss of $42 billion.

The gap between Anthropic's $2 trillion aspiration and the $150 billion outside view is now the central question for anyone thinking about taking a seat at the table. Whether the answer comes from New Constructs or from the auction will decide who makes money on the listing.

Is OpenAI burning cash while it waits?

OpenAI is in early-stage discussions with investors about a new funding round that could bring in roughly $30 billion, CNBC previously reported. The talks are driven by investor demand; no term sheet is finalized. The company closed a $122 billion funding round in March, and CFO Sarah Friar told CNBC last week that OpenAI is "very well capitalized."

The new raise, if it lands, would extend that cushion while the IPO waits. It would also reset the conversation about valuation at private-market prices that may or may not match what public investors eventually pay.

For the next 12 to 18 months, OpenAI's job is to keep growth above 70% while it absorbs the cost of compute, safety work, and the talent war for AI researchers. Those three bills dwarf everything else on the income statement.

Why this $18 billion revision hit the chips so hard

Nvidia, Oracle, and CoreWeave live downstream of OpenAI's balance sheet. Their stock prices reflect how much compute OpenAI and its peers will buy over the next few years. When OpenAI's revenue drops by $18 billion, the implied compute budget drops too, and so do the expected orders.

Oracle's nearly 6% drop matters because Oracle has staked much of its cloud story on OpenAI workloads. CoreWeave's 8% slide matters because CoreWeave's entire fleet was built around the same bet. The chain transmits a single number into several balance sheets within hours, and that's what Thursday's tape showed.

What's next for the AI infrastructure trade

The next move depends on whether OpenAI's revenue keeps climbing fast enough to close the gap its own slide just opened. If fourth-quarter numbers show another 20%-plus jump in run rate, the market can re-anchor on growth instead of on the $50 billion base. If the curve flattens, the selloff has more room to run.

For now, the $50 billion figure is the new floor. Everyone from Nvidia's board to Anthropic's bankers is reading the same deck, and the next earnings season will tell us whether the floor holds.

Bottom line: OpenAI's true annualized revenue is $50 billion, not $68 billion, and that single revision just repriced a corner of the stock market before the IPO even arrives.