What Was Posted on X
Peter Walker, Head of Insights at OpenRouter, posted OpenRouter’s chart of Anthropic and OpenAI shares of tokens and spend on 31 October, writing that “Opus 5.5 reversed the trend”. The piece takes the most recent week’s shares from the chart.
Short explainer · Anthropic draws 2.1x OpenAI’s spend per token
A vertical news Short summarising this story. Figures come from OpenRouter’s chart posted by its Head of Insights; our arithmetic is labelled.
Anthropic took 48% of the tokens but 66% of the spend between the two labs on OpenRouter in the most recent week of OpenRouter’s data, while OpenAI took 52% of the tokens and 34% of the spend. That puts Anthropic’s spend per token at about 2.1 times OpenAI’s, by our arithmetic.
The figures come from an OpenRouter-branded chart that Peter Walker, OpenRouter’s Head of Insights, posted on X on 31 October. The chart also says total tokens rose 224 times and total spend 81 times since the first week of 2026.
The key insight: As we read OpenRouter’s chart, Anthropic and OpenAI split the most recent week’s tokens close to evenly, but Anthropic took about two-thirds of the spend.
What OpenRouter’s Chart Shows
The chart, titled...