Daily token totals for top 50 models

Returns the top 50 public models per day by total token usage on OpenRouter, plus a single aggregated `other` row per day that sums every model outside that top 50. Token totals are `prompt_tokens + completion_tokens`, matching the public rankings chart on openrouter.ai/rankings. Each row is a distinct `(date, model_permaslug)` pair. The `other` row uses the reserved permaslug `other` and is always returned last within its date, so callers can compute `top-50 traffic / total daily traffic` without a second request. Authenticate with any valid OpenRouter API key (same key used for inference). Rate-limited to 30 requests/minute per key and 500 requests/day per account. When republishing or quoting this dataset, OpenRouter must be cited as: "Source: OpenRouter (openrouter.ai/rankings), as of {as_of}." Token counts come from each upstream provider's own tokenizer (Anthropic counts are as reported by Anthropic, OpenAI counts are as reported by OpenAI, etc.), so a token in one row is not directly comparable to a token in another row from a different provider.