Stripe Finalizes $7 Billion Deal to Acquire AI Gateway OpenRouter

Stripe has agreed to buy OpenRouter, the startup whose routing layer lets developers switch between more than 400 AI models, in a deal valued at more than $7 billion, according to people familiar with the negotiations. The price could still change before the deal closes.

A reported bid values OpenRouter at more than five times its spring valuation

OpenRouter closed a $113 million Series B round in May 2026, led by Alphabet's CapitalG with participation from Nvidia's venture arm and existing backers including Andreessen Horowitz, Menlo Ventures and Sequoia. That round valued the three-year-old company at roughly $1.3 billion, itself more than double the $547 million valuation it carried after its Series A closed the previous June.

Three months later, Stripe's reported bid puts the price above $7 billion. That is more than five times May's valuation and roughly thirteen times where OpenRouter stood a year earlier. Neither company has confirmed the transaction publicly. A Stripe spokesperson said the company does not comment on rumors or speculation.

OpenRouter routes traffic across hundreds of models instead of picking one

OpenRouter does not build or train language models. It sits between developers and more than 400 models from providers including OpenAI, Anthropic, Google, xAI and DeepSeek, handling model selection, routing, failover and billing through a single API. Its founder has described the company as an AI-era counterpart to Stripe itself: a neutral layer that lets a customer plug in once and reach many providers instead of building separate integrations for each.

For Stripe, a payments processor whose core business already depends on routing money reliably between banks and merchants, that pitch maps closely onto its own. Buying the layer that routes AI usage would give Stripe a claim on billing and metering for a category of spend that barely existed at scale two years ago. It would also put a payments company in the position of shaping how a competitive market of model providers reaches enterprise customers, a role OpenRouter has built its business on staying neutral about.

Usage on OpenRouter's platform grew rapidly ahead of the deal

The valuation jump followed a comparable jump in usage. Weekly token volume on OpenRouter's platform rose from roughly 5 trillion tokens in late 2025 to 25 trillion by May 2026, a fivefold increase in six months, as the company disclosed alongside its Series B. OpenRouter said it served 8 million users and had reached roughly $50 million in annualized revenue by early 2026, charging an estimated 5% markup on the inference spend it routes.

OpenRouter's own leaderboard data points to a market splitting by price and quality at the same time. Chinese open-weight models went from a sliver of total traffic to roughly 45% of it over the past year, while Anthropic's models capture a disproportionate share of revenue relative to their share of call volume. That pattern suggests customers are routing routine tasks to cheaper models while reserving premium spend for the highest-capability ones. Granular routing data of that kind, showing in near real time which models are gaining or losing production traffic, is itself a valuable asset for whoever owns the platform, independent of the fee OpenRouter collects on each call.

That growth reflects a broader shift in how companies buy AI capacity. Enterprise buyers increasingly resist committing to a single model provider, preferring a layer that can shift traffic toward whichever model is cheapest or best suited to a given task on a given day. Reporting last month indicated Stripe and OpenRouter had already been in acquisition talks for some time. The two companies also had an existing commercial relationship: Stripe already processes payments for OpenRouter.

Key deal terms have not been confirmed by either company

The reported price, the closing timeline and how OpenRouter will operate inside Stripe remain unconfirmed. People briefed on the talks cautioned that the final purchase price could still move before signing, and both companies have so far avoided public comment beyond Stripe's standard line declining to address speculation. What happens to OpenRouter's promise of vendor-neutral routing once it sits inside a company with its own commercial incentives is also an open question that neither side has addressed directly.

If the deal closes near the reported price, it would rank among the largest acquisitions in Stripe's history and its clearest move yet into AI infrastructure, alongside recent additions such as its Bridge stablecoin platform and Privy wallet infrastructure.