{
  "meta": {
    "generated_at": "2026-04-23T06:41:57.618417+00:00",
    "baseline_date": "2025-02-01",
    "launch_date": "2025-02-01",
    "data_sources": [
      "openrouter",
      "litellm"
    ],
    "methodology_version": "2.0",
    "models_count": 2161
  },
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    "ticker": "$CPI",
    "name": "Compute CPI",
    "value": 69.1,
    "mom_change": -22.97,
    "yoy_change": null,
    "trend": "down",
    "basket_cost": 28.4419,
    "basket_cost_unit": "$ per 1K standardized workloads"
  },
  "index_series": {
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      "ticker": "$CPI-L",
      "name": "Since Launch",
      "base_date": "2025-02-01",
      "value": 69.1
    },
    "yoy": {
      "ticker": "$CPI-Y",
      "name": "Year-over-Year",
      "base_date": "2025-04-23",
      "value": 81.1
    },
    "qtd": {
      "ticker": "$CPI-Q",
      "name": "Quarter-to-Date",
      "base_date": "2026-04-01",
      "value": 77.0
    },
    "mtd": {
      "ticker": "$CPI-M",
      "name": "Month-to-Date",
      "base_date": "2026-04-01",
      "value": 77.0
    },
    "wow": {
      "ticker": "$CPI-W",
      "name": "Week-over-Week",
      "base_date": "2026-04-16",
      "value": 100.0
    }
  },
  "methodology_variants": {
    "general": {
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      "name": "General Purpose",
      "description": "Balanced workload mix for typical usage",
      "value": 65.0,
      "basket_cost": 0.028442
    },
    "frontier_heavy": {
      "ticker": "$CPI-FRO",
      "name": "Frontier Heavy",
      "description": "Emphasis on highest-capability models",
      "value": 77.0,
      "basket_cost": 0.048388
    },
    "budget_heavy": {
      "ticker": "$CPI-BUD",
      "name": "Budget Optimized",
      "description": "Cost-conscious workload mix",
      "value": 57.5,
      "basket_cost": 0.0167
    },
    "reasoning_focus": {
      "ticker": "$CPI-REA",
      "name": "Reasoning Focus",
      "description": "Heavy emphasis on complex reasoning tasks",
      "value": 75.9,
      "basket_cost": 0.054645
    },
    "enterprise": {
      "ticker": "$CPI-ENT",
      "name": "Enterprise Mix",
      "description": "Typical enterprise automation workloads",
      "value": 61.0,
      "basket_cost": 0.019478
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  },
  "trend_analysis": {
    "direction": "stable",
    "velocity": 0.0,
    "velocity_unit": "points per month",
    "acceleration": 0.0,
    "forecast_30d": 69.1,
    "confidence": "high"
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  "yield_curve": {
    "curve": {
      "1w": {
        "days": 7,
        "deflation_pct": 0.0,
        "annualized_pct": 0.0,
        "source_date": "2026-04-16"
      },
      "1m": {
        "days": 30,
        "deflation_pct": -23.02,
        "annualized_pct": -280.09,
        "source_date": "2026-03-24"
      },
      "6m": {
        "days": 180,
        "deflation_pct": -7.66,
        "annualized_pct": -15.53,
        "source_date": "2025-11-01"
      },
      "1y": {
        "days": 365,
        "deflation_pct": -18.92,
        "annualized_pct": -18.92,
        "source_date": "2025-05-01"
      }
    },
    "interpretation": "Rapid deflation - AI compute costs falling significantly",
    "generated_at": "2026-04-23T06:41:57.615318+00:00"
  },
  "subindices": {
    "judgment": {
      "ticker": "$JUDGE",
      "name": "Reasoning Tier",
      "value": 9.39,
      "value_unit": "$/1M tokens",
      "models_count": 4
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    "longctx": {
      "ticker": "$LCTX",
      "name": "Long Context Tier",
      "value": 1.85,
      "value_unit": "$/1M tokens",
      "models_count": 4
    },
    "budget": {
      "ticker": "$BULK",
      "name": "Budget Tier",
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      "value_unit": "$/1M tokens",
      "models_count": 7
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    "frontier": {
      "ticker": "$FRONT",
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      "value_unit": "$/1M tokens",
      "models_count": 4
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      "unit": "$/1M tokens",
      "description": "Premium for frontier capability over budget tier"
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    "judgment_premium": {
      "ticker": "$JDG-P",
      "name": "Judgment Premium",
      "value": -0.46,
      "unit": "$/1M tokens",
      "description": "Premium for reasoning capability over frontier"
    },
    "context_premium": {
      "ticker": "$CTX-P",
      "name": "Context Premium",
      "value": -8.0,
      "unit": "$/1M tokens",
      "description": "Premium for long context capability"
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  },
  "exchange_rates": {
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      "model": "google/gemini-2.0-flash-001",
      "name": "Utility Token (Gemini Flash)",
      "blended_cost_per_token": 1.75e-07
    },
    "rates": {
      "frontier": {
        "ticker": "$FRONT",
        "rate": 63,
        "blended_cost": 1.0953125e-05,
        "display": "1 $FRONT = 63 $UTIL"
      },
      "reasoning": {
        "ticker": "$REASON",
        "rate": 50,
        "blended_cost": 8.831250000000001e-06,
        "display": "1 $REASON = 50 $UTIL"
      },
      "longctx": {
        "ticker": "$LCTX",
        "rate": 20,
        "blended_cost": 3.4968750000000003e-06,
        "display": "1 $LCTX = 20 $UTIL"
      },
      "budget": {
        "ticker": "$BULK",
        "rate": 4,
        "blended_cost": 6.655357142857143e-07,
        "display": "1 $BULK = 4 $UTIL"
      }
    },
    "generated_at": "2026-04-23T06:41:57.553187+00:00"
  },
  "persona_cpis": {
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      "mom_change": -15.63,
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      "basket_cost_unit": "$ per standardized workload",
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      "note": null
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    "agentic": {
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      "basket_cost_unit": "$ per standardized workload",
      "insight": "13% cheaper to run agents",
      "note": null
    },
    "throughput": {
      "ticker": "$THRU",
      "name": "Throughput",
      "description": "High-volume processing at scale",
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      "mom_change": -38.24,
      "basket_cost": 0.014631,
      "basket_cost_unit": "$ per standardized workload",
      "insight": "55% cheaper at scale",
      "note": null
    }
  },
  "basket_detail": {
    "chat_drafting": {
      "cost": 6.225,
      "weight": 0.2,
      "cost_unit": "$ per 1K workloads"
    },
    "summarization": {
      "cost": 18.225,
      "weight": 0.25,
      "cost_unit": "$ per 1K workloads"
    },
    "classification": {
      "cost": 0.2564,
      "weight": 0.2,
      "cost_unit": "$ per 1K workloads"
    },
    "coding": {
      "cost": 43.8125,
      "weight": 0.15,
      "cost_unit": "$ per 1K workloads"
    },
    "judgment": {
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      "weight": 0.1,
      "cost_unit": "$ per 1K workloads"
    },
    "long_context": {
      "cost": 94.475,
      "weight": 0.1,
      "cost_unit": "$ per 1K workloads"
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  }
}