I can now officially say it: OpenRouter is being acquired by Stripe!

Although we cannot comment on the price, this marks one of the fastest acquisitions of this scale in history: almost exactly 3 years after founding.

In this blog post, we write about the founding story and history of OpenRouter, why we invested and why Stripe is the perfect acquirer. A few of the highlights:

People love to say "OpenRouter has no moat". They think of moats primarily as technical difficulty. As a two-sided model marketplace, OpenRouter provides a really valuable service to model labs: predictability in capacity and distribution. And to user: a simple way to access all models. With scale, OpenRouter is able to provide better uptime, more models, with the cheapest discounts and have model labs prioritize launching on OR first!

— We saw this with Zuck and Elon both tweeting about their models on OR first, all Chinese models announcing on OR and OpenAI doing their secret model launches on OR and having the largest, exclusive GPT 5.6 discounts too!
— Andrej Karpathy distinctly calls out OR as the "Transfer switch for AI"
— OR becomes the go to data source for multi-model usage with their iconic rankings page.
— Tokens grew ~30,000x since first launch and as of this week is at a >4.5 quadrillion (that's 10^15!) run rate, a consistent 33% MoM growth for 3yrs!

Founders Alex Atallah (@alexatallah), Chris Clark (@cclark) and Louis Vichy were at the center of it all. OpenRouter did it different: no hype about revenue, a completely remote workforce, no buzz around fundraising, just relentless focus on product. No doubt that the lessons Alex carried forward from OpenSea on token marketplaces played a role in making OR successful.

Lastly, and definitely the least important, OpenRouter was very special to me as my first deal at Menlo: we partnered at the Seed, led by Anj (@AnjneyMidha) at a16z, and led the A when my partner Matt Murphy (@mmurph) and I joined the board. I feel very fortunate to have miraculously worked with such a special team!