Stripe strikes deal to buy AI model router OpenRouter for more than $7 billion

The payments company has agreed to acquire the routing layer that funnels roughly 8 million developers to more than 400 AI models, months after OpenRouter last raised at a $1.3 billion valuation.

Stripe has finalized an agreement to acquire OpenRouter for more than $7 billion, according to people familiar with the matter cited by Bloomberg, with Axios pegging the price above $8 billion in cash and stock. It’s at least a five-fold markup on the $1.3 billion valuation OpenRouter carried in May, when it closed a $113 million Series B led by Alphabet’s CapitalG, with Andreessen Horowitz and Menlo Ventures participating.

The strategic logic is unusually literal. OpenRouter co-founder Alex Atallah, formerly of OpenSea, has publicly described the company as the “Stripe for AI,” and Stripe evidently agrees enough to buy the framing outright. Founded in 2023 by Atallah and Louis Vichy, OpenRouter sits between developers and more than 400 models from OpenAI, Anthropic and others, offering a single API, failover to backup models, and telemetry on which options are actually getting used. Per SiliconANGLE, it takes roughly a 5% cut of inference spend across about 8 million users.

The two companies were already deeply entangled. Stripe co-authored the Agentic Commerce Protocol with OpenAI, has served as OpenRouter’s payments provider, and launched a token-billing integration with it in January. Acquiring the routing layer converts a partnership into a toll booth: Stripe now owns both the payment rails and the meter on inference itself.

Pricing tells its own story. The Wall Street Journal previously reported talks at roughly $10 billion, so the current number represents a walk-down, not a bidding war. Total funding into OpenRouter sat at $164 million, per Axios, with NVentures, ServiceNow Ventures, MongoDB, Snowflake and Databricks among the earlier backers, an investor list that reads like a preview of the enterprise AI stack consolidating around a single chokepoint.

A Stripe spokesperson declined to comment on “rumors or speculation.” Axios expects an official announcement this week. Competitors, including open-source LiteLLM and the routing features increasingly built into hyperscaler model services, now face an OpenRouter with Stripe’s balance sheet behind it, which is a different sort of adversary than a well-funded 2023 startup.

Stripe strikes deal to buy AI model router OpenRouter for more than $7 billion

Sources