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OpenRouter Raises $113M to Scale Multi-Model AI Infrastructure

OpenRouter, a unified API platform for accessing hundreds of LLMs, raised $113 million in Series B funding led by CapitalG. The round includes strategic backing from NVIDIA, Snowflake, Databricks, MongoDB, and ServiceNow. This capital injection follows a period of explosive growth where weekly token volume reached 25 trillion.

The involvement of major enterprise data and cloud providers marks a turning point for AI infrastructure. As developers move toward production agents, they require OpenRouter's multi-key failover and OpenRouter's response caching. This investment validates the router as a critical control plane for managing inference across fragmented providers.

For teams building on the platform, this funding ensures stability for OpenRouter's Agent SDK primitives and OpenRouter's Owl Alpha model. You can continue using the unified API to access over 500 models with consolidated billing and intelligent routing.

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Today we’re announcing our $113M Series B led by @CapitalGVC. Over the last 6 months, weekly volume on OpenRouter grew from 5T to 25T tokens as AI rapidly shifts from experimentation into production. We’re excited for what comes next. https://t.co/soAFvX7fzk

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Still wondering? A few quick answers below.

OpenRouter is a model aggregation platform that provides a unified API for accessing hundreds of different large language models from various providers. It acts as an exchange that handles intelligent routing, failover, and consolidated billing, allowing developers to use models from companies like OpenAI, Anthropic, and Google through a single interface rather than managing multiple separate accounts.

OpenRouter raised 113 million dollars in its Series B funding round. The investment was led by CapitalG, which is the growth investment arm of Alphabet, Google's parent company. The round also included participation from major enterprise technology firms including NVIDIA, ServiceNow, MongoDB, Snowflake, and Databricks, alongside existing venture capital backers like a16z and Menlo Ventures.

OpenRouter has experienced significant growth over the last six months, with its weekly token volume increasing fivefold. The platform's volume grew from 5 trillion tokens per week to 25 trillion tokens per week during this period. This surge in usage reflects a broader industry shift as AI applications move from early experimentation into high-volume production environments.

OpenRouter is available to all developers and currently provides access to over 500 different models. This includes frontier models from major labs as well as over 50 free models. Users can explore model data, use a private chat interface, or integrate the unified API into their own applications to manage multi-model workflows and optimize their inference costs.

These companies are investing in OpenRouter because it serves as a critical infrastructure layer for the multi-model AI era. By acting as a control plane for model routing and optimization, OpenRouter helps enterprises manage the complexity of using different AI models across fragmented providers, which aligns with the strategic interests of major data and cloud platform providers.

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