OpenRouter data indicates that the average daily token usage for Anthropic models increased by approximately 3.5 times between September 22 and October 24, 2026. Additionally, the 7-day average token volume on the platform grew by 3.6 times following the release of the Claude Opus 5.5 model.
Anthropic introduced its 5.5 model series in stages: Opus 5.5 launched on September 22, Sonnet 5.5 on September 28, and Haiku 5.5 on October 7, 2026. Each model features distinct pricing structures based on input and output costs per million tokens.
The Haiku 5.5 model is priced at one-twentieth of the cost of the Sonnet model for both input and output operations. Peter Walker, Head of Insights at OpenRouter, confirmed that total expenditure on Anthropic models has increased alongside token volume, signaling genuine growth in demand.
