OpenRouter, the unified gateway and API for Large Language Models founded in 2023, has raised a hefty $113 million Series B led by CapitalG, the expansion enterprise fund of Google parent company Alphabet. While the startup didn’t disclose its recent valuation, The Recent York Times reports that it landed at about $1.3 billion post-money.
It is a hefty increase from the estimated $547 million post-money valuation it hit a 12 months ago, per Pitchbook, after raising $40 million in Series A funding in June 2025. That round was led by Andreessen Horowitz and Menlo Ventures, with participation from Sequoia.
What a difference a 12 months makes. Since then, AI work has shifted from training to inference to, now, agents. And OpenRouter’s AI gateway has soared in popularity in response. The gateway helps enterprises and other AI users select different models for various jobs to regulate costs or increase reasoning and accuracy for the duty at hand.
OpenRouter provides access to over 400 models, including Anthropic, Google, OpenAI, xAI, and DeepSeek, it says. It claims 8 million global users and 100 trillion tokens processed monthly, or about 25 trillion per week. That’s a 5X increase from the 5 trillion tokens it was processing per week just six months ago.
OpenRouter’s success implies that the AI model is increasingly becoming an invisible, swappable engine for AI tasks. Fairly than a future where startups or enterprises standardize on a model of selection — perhaps making a single all-powerful model maker in the method — the expansion of OpenRouter indicates something else.
Firms haven’t any plans to get locked right into a model vendor as they did with their various SaaS providers. The multi-model future is already here.