{
  "description": "Metered bills for identical prompts across models, measured by Unbiased. Not estimates. Prompts published at unbiased.ai/blog/fable-5-pricing/.",
  "measured": "2026-07-28",
  "tasks": {
    "dashboard_codegen": {
      "claude-fable-5": 0.1462,
      "claude-opus-5": 0.1158,
      "claude-opus-4-8": 0.0724,
      "claude-sonnet-5": 0.041,
      "claude-haiku-4-5": 0.0162
    },
    "invoice_extraction": {
      "claude-opus-5": 0.0114,
      "claude-opus-4-8": 0.0093,
      "claude-sonnet-5": 0.0037,
      "claude-haiku-4-5": 0.0016
    },
    "agentic_bugfix_session": {
      "claude-fable-5": 0.5887,
      "_note": "Real Claude Code session, 5 API calls, full ledger published; caching saved 2.6x."
    }
  },
  "latency_ttft_s": {
    "direct_anthropic_haiku": {
      "p50": 0.588,
      "p95": 0.925
    },
    "n": 20,
    "measured": "2026-07-28"
  }
}