After a 12 months of frenzied dealmaking and rumors of an upcoming IPO, the monetary scrutiny into OpenAI is intensifying. Leaked paperwork obtained by tech blogger Ed Zitron present extra of a glimpse into OpenAI’s financials — particularly its income and compute prices over the previous couple of years.
Zitron reported this week that in 2024, Microsoft obtained $493.8 million in income share funds from OpenAI. Within the first three quarters of 2025, that quantity jumped to $865.8 million, in response to paperwork he seen.
OpenAI reportedly shares 20% of its income with Microsoft as a part of a earlier deal the place the software program big invested over $13 billion within the highly effective AI startup. (Neither the startup nor the folks in Redmond have publicly confirmed this proportion.)
Nevertheless, that is the place issues get a bit sticky, as a result of Microsoft additionally shares income with OpenAI, kicking again about 20% of the revenues from Bing and Azure OpenAI Service, a supply acquainted with the matter informed TechCrunch. Bing is powered by OpenAI, and the OpenAI Service sells cloud entry to OpenAI’s fashions to builders and companies.
The supply additionally informed TechCrunch that the leaked funds consult with Microsoft’s web income share, not the gross income share. In different phrases, they don’t embrace no matter Microsoft paid to OpenAI from Bing and Azure OpenAI royalties. Microsoft deducts these figures from its internally reported income share numbers, in response to this particular person.
Microsoft doesn’t escape how a lot it makes from Bing and Azure OpenAI in its monetary statements, so it’s tough to estimate how a lot the tech big is kicking again.
However, the leaked paperwork present a window into the most well liked firm on the non-public markets immediately — and never simply how a lot it makes in income, but in addition how a lot it’s spending compared to that income.
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So, primarily based on that extensively reported 20% revenue-share statistic, we will infer that OpenAI’s income was no less than $2.5 billion in 2024 and $4.33 billion within the first three quarters of 2025 — however very prone to be extra. Earlier stories from The Data put OpenAI’s 2024 income at round $4 billion, and its income from the primary half of 2025 at $4.3 billion.
Altman additionally not too long ago stated OpenAI’s income is “effectively extra” than stories of $13 billion a 12 months, will finish the 12 months above $20 billion in annualized income run price (which is a projection, not steerage on precise income), and that the corporate may even hit $100 billion by 2027.
Per Zitron’s evaluation, OpenAI could have spent roughly $3.8 billion on inference in 2024. That spend elevated to roughly $8.65 billion within the first 9 months of 2025. Inference is the compute used to run a educated AI mannequin to generate responses.
OpenAI has traditionally nearly completely relied on Microsoft Azure to offer compute entry, although it has additionally struck offers with CoreWeave and Oracle, and extra not too long ago with AWS and Google Cloud.
Earlier stories put OpenAI’s complete compute spend at roughly $5.6 billion for 2024 and its “value of income” at $2.5 billion for the primary half of 2025.
A supply acquainted with the matter informed TechCrunch that whereas OpenAI’s coaching spend is usually non-cash — that means, paid by credit Microsoft awarded OpenAI as a part of its funding — the agency’s inference spend is basically money. (Coaching refers back to the compute sources wanted to initially prepare a mannequin.)
Whereas not an entire image, these numbers indicate that OpenAI might be spending extra on inference prices than it’s incomes in income.
And people implications promise so as to add to the incessant AI bubble chatter that has seeped into each dialog from New York Metropolis to Silicon Valley. If mannequin big OpenAI actually nonetheless is within the purple operating its fashions, what would possibly this imply for the large investments at jaw-dropping valuations for the remainder of the AI world?
OpenAI declined to remark. Microsoft didn’t reply to TechCrunch’s request for remark.
Bought a delicate tip or confidential paperwork? We’re reporting on the internal workings of the AI trade — from the businesses shaping its future to the folks impacted by their selections. Attain out to Rebecca Bellan at rebecca.bellan@techcrunch.com or Russell Brandom at russell.brandom@techcrunch.com. For safe communication, you may contact them through Sign at @rebeccabellan.491 and russellbrandom.49.
