OpenRouter Doubles Valuation to $1.3B on AI Gateway Boom

SAN FRANCISCO: OpenRouter raises $113 million in Series B funding, more than doubling its valuation to roughly $1.3 billion in a single year.

CapitalG, Alphabet’s growth venture fund, leads the round announced May 26. The new valuation jumps from an estimated $547 million just one year ago. Andreessen Horowitz, Menlo Ventures, and Sequoia backed the earlier Series A.

OpenRouter operates an AI gateway connecting users to over 400 different models. The platform spans Anthropic, Google, OpenAI, xAI, and DeepSeek among many providers. Customers select different models for different jobs to control costs and accuracy.

The startup processes roughly 25 trillion tokens per week across its platform. That figure represents a fivefold increase from six months ago. OpenRouter now claims 8 million global users routing through its single API.

The growth tracks a broader shift across the AI industry recently. Work moved from training to inference, and now toward autonomous agents. Each phase increased demand for flexible model routing across diverse workloads.

The company’s rise signals a clear preference against vendor lock-in among enterprises. Customers avoid standardizing on one model maker the way they did with SaaS. The pattern keeps individual model providers from capturing entire customer relationships.

OpenRouter makes the underlying AI model an invisible, swappable engine for tasks. The approach challenges any single lab’s ambition to dominate through one model. A genuinely multi-model future now appears firmly established across the market.

CapitalG’s leadership proves notable given Alphabet owns competing model maker Google. The investment signals conviction that aggregation layers capture durable value independently. Founded in 2023, OpenRouter scaled remarkably fast for an infrastructure startup.

The fresh capital positions OpenRouter to expand model coverage and enterprise features. The company did not formally disclose its exact post-money valuation publicly.