OpenRouter raises $113M Series B

OpenRouter has raised a $113 million Series B round, the company announced on its blog. The round was led by CapitalG, Alphabet's independent growth fund.

Who invested

Alongside CapitalG, the round included NVentures, NVIDIA's venture capital arm, ServiceNow Ventures, MongoDB Ventures, Snowflake Ventures, Databricks Ventures, AMP PBC and Pace Capital, as well as existing investors Andreessen Horowitz and Menlo Ventures.

OpenRouter described the composition of the investor group as deliberate: the venture arms of infrastructure and platform companies that enterprises already depend on, rather than purely financial backers.

Growth in numbers

The company said weekly volume on its platform grew from 5 trillion to 25 trillion tokens over the last six months. OpenRouter expects to process more than a quadrillion tokens this year and to serve more than 8 million developers building across more than 400 models.

What the company has been building

OpenRouter sits between agents and model providers, handling routing, reliability, cost optimization and compliance. Over the past year it has expanded multimodal inference to cover image, audio, speech, transcription, embedding and video models, and added enterprise controls including workspaces, spend management, guardrails and zero-data-retention policies. Its routing layer provides provider-level failover, cost and latency optimization, and quality-aware routing that goes beyond simple load balancing.

What's next

The company said the funding will be used to scale its infrastructure, deepen enterprise capabilities and continue investing in intelligent routing — matching each request to the right model and provider.