Tracks Anthropic’s share of eligible token usage among models appearing in OpenRouter’s daily top 50, measured over the seven most recent complete, consecutive UTC days. Index = 100 × Anthropic tokens ÷ eligible top-50 tokens Prompt and completion tokens are summed across all seven days before calculating the percentage. Anthropic tokens are identified using OpenRouter’s exact author attribution. OpenRouter’s aggregate “other” row, multi-model routers, and floating aliases are excluded. This measures public traffic routed through OpenRouter only—not Anthropic’s total API usage, cloud-provider usage, revenue, requests, users, or overall AI market share. Token counts use providers’ respective tokenizers, so cross-provider comparisons are approximate. Manifold refreshes the oracle hourly and pauses trading if the source becomes stale, incomplete, or invalid. Source: https://openrouter.ai/rankings Rankings data is licensed under CC BY 4.0.