Popular AI gateway maker OpenRouter has raised a hefty $113 million Series B led by CapitalG, the growth venture fund of Google parent company Alphabet. While the startup didn’t disclose its new valuation, The New York Times reports that it landed at about $1.3 billion post-money.

This is a significant increase from the estimated $547 million post-money valuation it hit a year ago after raising $40 million in Series A funding in June 2025, led by Andreessen Horowitz and Menlo Ventures, with participation from Sequoia. Since then, AI work has shifted from training to inference to agents, and OpenRouter’s AI gateway has soared in popularity.

The gateway helps enterprises and other AI users select different models for different jobs, controlling costs or increasing reasoning and accuracy. OpenRouter provides access to over 400 models, including Anthropic, Google, OpenAI, xAI, and DeepSeek. It claims 8 million global users and 100 trillion tokens processed per month, a fivefold increase from the 5 trillion tokens it was processing per week just six months ago.

OpenRouter’s success means that AI models are becoming invisible, swappable engines for various tasks. Rather than startups or enterprises standardizing on one model of choice, the growth of OpenRouter indicates a multi-model future where companies have no plans to get locked into model vendors as they did with SaaS providers.