OpenAI's Leaked Financials Show Rapid Revenue Growth Outpaced by Soaring Expenses

As OpenAI files SEC paperwork ahead of an expected initial public stock offering, newly leaked financial documents show a company with quickly growing revenues that are currently being overwhelmed by even larger expenses.

The audited financial statements, obtained by independent journalist Ed Zitron, show OpenAI’s reported revenue growing from $3.7 billion in 2024 to $13.07 billion in 2025. The Financial Times, which reviewed the same documents, writes that the company’s monthly revenues had grown to nearly $2 billion by the end of 2025, suggesting that its ongoing revenue rates continued to grow throughout the year.

But the company’s fast-growing revenues are still dwarfed by its even more significant expenses. OpenAI’s total revenues in both of the last two years were outpaced by research and development alone, which grew from a $7.81 billion line item in 2024 to a massive $19.18 billion cost in 2025. Those numbers seem to reflect the significant costs OpenAI incurred in training new models and include $10.59 billion in R&D costs paid to Microsoft alone in 2025.

On top of that, OpenAI’s “cost of revenue” (i.e., the money spent producing and distributing the product) increased from $2.65 billion in 2024 to $7.5 billion in 2025. This cost line likely reflects the significant compute costs incurred at “inference time” as the company’s models respond to a growing number of user prompts. Costs associated with sales and marketing also grew from $1.11 billion in 2024 to $5.73 billion in 2025.

All told, OpenAI’s day-to-day “loss from operations” increased from $8.78 billion in 2024 to $20.92 billion in 2025, a concerning direction for a company that is telling investors it hopes to be profitable by 2030. But measured as a percentage of revenues, the company’s operating losses slightly improved year to year, from 237 percent in 2024 to 160 percent in 2025.

Gotta spend money to make money

Operating numbers aside, OpenAI’s headline “net loss” number of just over $5 billion in 2024 ballooned to nearly $39 billion in 2025. But the 2025 number includes a significant accounting charge related to investor valuations that shifted amid the company’s 2025 conversion to a for-profit structure. The Financial Times cites “a person familiar with the matter” in reporting that this non-recurring charge was approximately $30 billion and that OpenAI’s 2025 net loss amounted to a more reasonable-looking $8 billion without it.

As OpenAI tries to shift all these losses to eventual profits, it will have to start reining in its costs, especially the massive (and growing) R&D costs associated with model training. It will also have to deal with enterprise customers that are beginning to balk at token-based pricing and starting to demand a measurable return on investment for their AI spending. And on the subscription side, pressure from rival Anthropic may force the company to lower prices, which could further increase operating losses in the near term.

OpenAI shut down its Sora video generation model in March. Around the same time, OpenAI CEO of Applications Fidji Simo told employees that the company would be cutting back on “side quests” and focusing on its core coding and business users.

In March, OpenAI raised $122 billion of financing in a funding round that valued the company at $852 billion. The company reports over 900 million weekly active users of ChatGPT, though only about 50 million of those are paid subscribers.