When you see these absurd numbers, they are re-counting cached input for every turn. So a simple tool call when your context size is at 500k counts as another 500k to the sum.
Total Opus 5.5 token usage on OpenRouter last week is 5000B, presumably not counting cached input.
Total Opus 5.5 token usage on OpenRouter last week is 5000B, presumably not counting cached input.