{
  "billing_concept": {
    "id": "bil_usage_tiers",
    "name": "Usage tiers scale rate limits with usage history",
    "category": "usage_tiers",
    "description": "API accounts are commonly placed into usage tiers that determine their rate limits (requests per minute, tokens per minute, etc.) — higher tiers generally unlock higher throughput.",
    "how_it_works": "An account's tier is often based on its spend history and how long it has been actively using the API, rather than being fixed permanently at signup — accounts can move to a higher tier over time as usage and payment history accumulate.",
    "source_note": "General mechanism description; no specific tier thresholds, exact rate-limit numbers, or dollar-spend cutoffs are stated, since this session did not perform a live web search to confirm current exact figures for Anthropic's usage tiers.",
    "created_at": "2026-07-02 08:30:46",
    "cite_as": "https://subagentcredits.com/api/billing-concepts/bil_usage_tiers"
  }
}