OpenAI Lowers Its 2026 Revenue Forecast by $20 Billion During $30 Billion Funding Talks
OpenAI now expects $50bn (£37bn) in revenue for 2026, about $20bn less than the $70bn figure it shared with investors in September.
The new $50bn estimate is based on actual sales through the end of September 2026. The earlier $70bn figure was shared in investor materials in September 2026 and was calculated by taking a starting $40bn estimate and adding 70% expected growth, according to Yahoo Finance. The update came as OpenAI holds early talks to raise $30bn at a valuation of about $1.4tn, according to The Guardian. Those talks have not finished. The valuation discussion is running alongside the revenue guidance.
On Thursday 8 October 2026, markets moved after the news. The tech-heavy Nasdaq index closed down 1.4%. Oracle shares fell 5.5%, Micron fell 4.8%, and Nvidia fell 2.9%.
Part of the comparison turns on accounting. Anthropic counts revenue from sales made through cloud partners such as Amazon's AWS and Google Cloud. OpenAI does not. That difference changes how the headline totals compare across labs.
The broader context here is calibration, not a change in direction. A $20bn cut to a future estimate changes the math investors use to judge a proposed valuation. Think of valuation as a price tag measured against expected sales. A forecast made by adding a fixed growth rate to a starting guess works differently from a forecast built on nine months of recorded sales. The first leans on assumptions. The second checks them.
Looking to what comes next, two questions stand out. First, how investors will adjust for that accounting difference when they compare OpenAI with rivals that count cloud-partner sales. A direct comparison without that adjustment can give a misleading picture. Second, whether the September and October numbers are read as two versions of the same forecast or as two different methods. That choice will shape investor checks.
In my view, the market reaction bears watching. Public chip and infrastructure stocks moved together on private-company guidance. That link points to AI-lab forecasts acting as a short-term input for public share prices, not only as a signal for private investors. If that continues, small changes in wording about estimates, cut-off dates and what is included can move large sums.
