The Information reports that Anthropic's revenue grew roughly fivefold over the first five months of 2026, reaching an annualized run rate of close to $45 billion, while OpenAI's run rate has only climbed past $30 billion in the same window and is currently estimated near $33 billion. That puts Anthropic about 35% ahead by revenue, an extraordinary reversal given that just twelve months ago OpenAI was widely understood to be several multiples larger. OpenAI is still tracking its own previously-shared investor projection of roughly 50% revenue growth over the first five months of the year, which under more normal circumstances would be celebrated. Against Anthropic's 5x growth in the same period, it now reads as conspicuously decelerating.
The shift is significant on multiple axes. Anthropic's mix is heavily enterprise and API-driven, dominated by Claude Code adoption, large alliance deals, and platform integrations: KPMG's 276,000-seat rollout, the Gates Foundation partnership, the SpaceX compute deal, the Stainless acquisition, and the steady drumbeat of Fortune-500 announcements over the past quarter all show up in revenue. OpenAI's mix has been more consumer-tilted, with ChatGPT subscription monetization, the nascent ads business, and big-ticket SoftBank-anchored capital partnerships providing the headline narrative. The shape of those two revenue streams is quite different — Anthropic's looks more like enterprise infrastructure spend, OpenAI's like a mix of consumer subscription plus emerging ad and licensing revenue.
If the trend holds, this rewrites the strategic terrain. The model-as-API thesis has historically been viewed as the lower-margin, harder-to-defend business — yet on these numbers Anthropic is monetizing it at scale faster than OpenAI is monetizing its consumer franchise. The implication for partners (and acquirers, and policymakers) is that the developer + agent + coding stack is currently outpacing the chat-app stack on monetization velocity. It also tightens the read on why so many of Anthropic's recent moves — the Korea office announced today, Project Glasswing, the SpaceX compute deal, the higher usage limits — read as a company pressing an advantage rather than playing catch-up.