The revenue that was mostly Twitter

In January 2026 xAI closed a $20 billion Series E at a roughly $230 billion valuation, the largest funding round any AI company has ever raised. Two facts under the headline complicate it. First, only about $7.5 billion of it was equity; the other ~$12.5 billion was debt, routed through a special-purpose vehicle whose job is to buy Nvidia GPUs — the same circular vendor-financing loop now drawing scrutiny across the AI build-out, with Nvidia itself among the investors writing checks back in.

Second, the growth story the round was sold on barely holds. The figure that circulated — $3.8 billion in revenue, up 38-fold in a year — is the combined xAI-plus-X entity, because xAI absorbed Twitter in a March 2025 merger. Strip out the legacy advertising business and SpaceX's own IPO filing, the first semi-audited look at the books, shows the AI side earned about $465 million in 2025. The combined entity lost $6.4 billion from operations that year.

So the most-cited number for the most-expensive AI lab is, in the part that grew, mostly Twitter. On the AI thesis the $230 billion price is actually betting on, xAI is the capital-heaviest and revenue-lightest of the frontier labs — roughly $500 million in annual AI revenue against rivals booking twenty to forty times that at comparable valuations. The wager is that a balance sheet stacked with Nvidia hardware buys its way to the traction the income statement doesn't yet show.