OpenRouter, a unified API gateway giving developers access to more than 400 large language models through one interface, saw weekly token usage rise roughly 9,000x from about 10 billion tokens in January 2024 to more than 90 trillion by mid-2026. Agentic AI workloads, in which autonomous software agents chain multiple model calls to complete tasks without human intervention, drove much of the latest growth. Daily agent consumption increased 14x from 0.51 trillion tokens in February 2026 to 7.3 trillion in August, making agents responsible for roughly 71% of platform usage by early August. Human usage grew 2.8x over the same period. Chinese open-source models, led by providers such as DeepSeek, increased their share of OpenRouter token usage from roughly 2% in 2025 to more than 50% by mid-2026, while U.S. frontier models fell from 70% to 30%. OpenRouter’s estimated annualized revenue reached about $140 million by July 2026, when it was growing 29% month over month. The company raised $113 million in a Series B round in May 2026 at a valuation of roughly $1.3 billion and now serves more than 8 million users. Its expansion into analytics and developer tools may increase switching costs as teams build monitoring and cost-optimization workflows around the platform.