OpenRouter users are loving Anthropic's Opus 5.5
It is the #1 model in share of spending across the platform and has led a rebound for Anthropic in the competition with OpenAI
Sonnet 5.5 and Haiku 5.5 have also seen strong launch periods
In an October 13 post, OpenRouter reported that Anthropic's Opus 5.5 ranked first by share of model spending on its platform. That identifies where customers' money went within this service. A spending share does not establish the number of users or requests, so it supports a narrower conclusion than overall popularity or market leadership. Platform report.
