Stripe acquires OpenRouter for over $7 billion, valuation jumps fivefold since May

Stripe announced a deal to buy the AI-routing startup OpenRouter for more than $7 billion, according to Bloomberg reporting published yesterday. The Wall Street Journal had reported last month that the companies were in talks, and Bloomberg now says the discussions have resulted in a definitive agreement. A Stripe spokesperson told TechCrunch that the company does not comment on rumors or speculation.

The price reflects a sharp increase in valuation within three months: in May OpenRouter raised a Series B round of $113 million at a $1.3 billion valuation. Investors in that round included Sequoia, Andreessen Horowitz, Menlo Ventures and Capital G of Alphabet. A 5.4-times multiple on the latest financing is notable even in a market where AI-infrastructure premiums have become the norm.

OpenRouter has built a routing layer that lets customers select different language models for each task, based on need, budget and performance, through a single API. CEO Alex Atallah described the product as “Stripe’s equivalent for the AI world: a single interface that prevents vendor lock-in and enables transparent model switching.” The company says the platform serves 8 million global users and provides access to more than 400 models, including GPT-4, Claude and various open-source variants.

The acquisition places Stripe in a unique position: not only a payments provider but also a control layer through which organizations consume models. Instead of managing separate contracts with OpenAI, Anthropic and other providers, Stripe customers could, in theory, route requests via OpenRouter and pay on a single invoice. The open question is whether Stripe will keep the model marketplace neutral or favor strategic partners. Past experience shows that “open” gateways tend to close when a large buyer enters the picture.

Stripe declined to confirm or deny the report, issuing a standard statement that provides no details. Without an official announcement, the terms of the closing, the timeline for completion, or whether the OpenRouter brand will remain independent have not been disclosed. Given the size of the transaction, regulators are expected to scrutinize its impact on competition in the AI-infrastructure market, a sector already under close watch on both sides of the Atlantic.