Stripe Inc. has reached a definitive agreement to acquire OpenRouter Inc., a startup that provides a platform for companies to switch between artificial intelligence models, for more than $7 billion, according to individuals familiar with the negotiations. The transaction, which is expected to close in the coming months, underscores the intense demand among businesses for flexible and cost-efficient AI infrastructure. Only a few months ago, OpenRouter raised capital at a reported valuation of $1.3 billion, meaning the acquisition price represents a more than fivefold increase in just a short period.

The deal could significantly bolster Stripe’s position in the AI ecosystem, as the payments processor looks to expand beyond its core financial services. OpenRouter’s technology functions as a middleware layer, giving developers a single interface to access hundreds of large language models and other AI tools, while also optimizing for performance and cost. The final acquisition price may still be subject to change, the people said, speaking on condition of anonymity because the details are not public. A Stripe spokesperson declined to comment, stating the company does not discuss rumors or speculation. OpenRouter also declined to comment.

Founded in 2023, OpenRouter is headquartered in New York City and has quickly become a vital tool for developers navigating the fragmented AI landscape. The company’s platform aggregates models from providers such as OpenAI, Anthropic, Google, and a growing number of Chinese firms, allowing users to route requests to the most suitable model based on price, speed, or capability. OpenRouter has raised more than $150 million in venture capital from some of Silicon Valley’s most influential investors, including CapitalG, Alphabet’s growth equity arm, as well as Andreessen Horowitz and Menlo Ventures.

The startup’s rise coincides with a broader shift in the AI industry: businesses are increasingly scrutinizing the cost of running models at scale. While OpenAI’s GPT-4 and Anthropic’s Claude remain the gold standard for many complex tasks, a wave of cheaper alternatives—particularly from Chinese developers—have proven adequate for a wide range of applications. This has created a need for tools like OpenRouter that can dynamically allocate workloads to the most economical option without sacrificing quality.

In May, OpenRouter announced that it serves 8 million developers, who rely on the platform to access over 400 different AI models. The company’s primary growth engine comes from developers building agentic capabilities—software agents that can autonomously perform tasks—which require integrating multiple models and data sources. OpenRouter also offers reliability features such as automatic failover to backup models and popularity analytics that help teams understand which models are gaining traction across the tech ecosystem.

The Wall Street Journal previously reported that Stripe was in talks to acquire OpenRouter for roughly $10 billion, indicating that the negotiations led to a lower final price. OpenRouter’s CEO, Alex Atallah, is a well-known figure in the crypto and tech worlds. He previously co-founded OpenSea, the largest NFT marketplace, which raised over $400 million before its user base collapsed. Atallah stepped down from OpenSea in July 2022, and less than a year later launched OpenRouter. Earlier this year, he described OpenRouter as the AI equivalent of Stripe, drawing a direct parallel between the payments infrastructure Stripe provides and the model-routing infrastructure his startup offers.

The acquisition represents a major bet by Stripe on the future of AI-driven commerce and developer tools. By integrating OpenRouter’s technology, Stripe could potentially offer its millions of merchant customers seamless access to AI capabilities, while also generating new revenue streams from model usage fees. The deal also highlights the ongoing consolidation in the AI infrastructure space, as large companies seek to acquire the middleware that connects applications to the increasingly complex world of artificial intelligence.