AI routing and infrastructure platform OpenRouter recently announced the completion of its Series B funding round, raising $113 million. The round was led by CapitalG, with participation from NVentures, ServiceNow, MongoDB, Snowflake, Databricks, and existing investors a16z and Menlo Ventures. Over the past six months, OpenRouter has experienced explosive growth in business volume, with weekly token processing surging from 5 trillion to 25 trillion, and is projected to exceed 1 quadrillion for the entire year. Currently, the platform has attracted over 8 million developers and supports the invocation of more than 400 models. As AI technology gradually enters production environments and intelligent automation stages, developers increasingly demand highly reliable infrastructure that spans across models and providers. This investment round not only reflects strategic alliances among industry leaders but also underscores the central role of middleware layers handling routing, cost, reliability, and compliance within the AI technology stack. OpenRouter has successfully transformed from an initial API aggregator into a versatile, production-grade architecture with full modality support, enterprise-grade governance, and intelligent routing technology. The newly raised funds will be used for large-scale infrastructure expansion, in-depth enterprise empowerment, and continuous evolution of routing algorithms. The industry widely believes that, with models increasingly becoming commodities, companies capable of efficiently bridging models and applications while effectively managing computational costs will control the traffic entry points of the AI era. OpenRouter is steadily emerging as the routing hub for this multi-model AI era.