On May 26, OpenRouter announced it had raised a $113 million Series B led by CapitalG, Alphabet’s independent growth fund. The company did not disclose a valuation, but The New York Times reported it at about $1.3 billion post-money, a figure later repeated by Menlo Ventures. Founded in 2023 and based in New York, OpenRouter operates an exchange and routing platform for AI inference, offering a single API to more than 400 models from over 60 providers, including Anthropic, Google, OpenAI, xAI and DeepSeek.
CapitalG and Menlo Ventures described the investment as a bet that enterprises will require specialized infrastructure to orchestrate inference across multiple providers, rather than relying on a single model. The presence of corporate venture arms from ServiceNow, MongoDB, Snowflake and Databricks in the syndicate added enterprise credibility to the model-routing thesis.
OpenRouter said it now processes 25 trillion tokens per week, equivalent to 100 trillion per month, a five-fold increase from 5 trillion weekly six months earlier. The company claims more than 8 million global users, a figure Menlo Ventures described as developers. None of these metrics have been independently audited. The company stated it would use the new capital to expand routing, governance and optimization capabilities for enterprise deployment.
The Series B syndicate included NVentures, ServiceNow Ventures, MongoDB Ventures, Snowflake Ventures, Databricks Ventures, and existing investors Andreessen Horowitz and Menlo Ventures. In June 2025, OpenRouter raised a $40 million combined seed and Series A led by a16z and Menlo, with Sequoia participating; an SEC filing later showed a total offering amount of $47.6 million. Private-market valuation estimates for that round were $500 million from Sacra and $547 million from PitchBook, suggesting the reported $1.3 billion valuation roughly doubled the company’s worth in less than a year.
The company’s platform sits between application developers and model providers, routing prompts to the most cost-effective or capable model for a given task. Investor commentary emphasized that inference at scale demands optimization and governance that single-model APIs cannot provide. Sacra, in an April 2026 research note, wrote that OpenRouter was then in talks to raise $120 million at a $1.3 billion valuation, consistent with the eventual round size.
Several details remained unresolved. The company did not confirm the valuation; the figure comes from The New York Times and Menlo Ventures, and the NYT story could not be independently reviewed. Menlo Ventures said the round closed in February, nearly four months before the May 26 public announcement. Sacra’s earlier metrics—8.4 trillion monthly tokens and 2.5 million users—differ markedly from the company’s present claims, suggesting either rapid growth or divergent definitions. Revenue, gross margin and take rate are not publicly disclosed; Sacra estimated run-rate revenue of approximately $50 million in early 2026, but that remains an analyst estimate.
For capital allocators, the round signaled that investor conviction in multi-model inference infrastructure is accelerating. Yet the model-routing layer still faces competition from cloud hyperscaler bundles such as AWS Bedrock, Google Vertex AI and Azure OpenAI Service. Whether enterprises will choose a neutral routing fabric over integrated provider suites is the question that OpenRouter’s next year must answer.