{
  "schemaVersion": "1.0",
  "formulaVersion": "1.0",
  "verifiedAt": "2026-10-09",
  "currency": "USD",
  "region": "No carrier region assumed; check provider eligibility",
  "tier": "Published usage-only rates; no negotiated discounts",
  "direct": {
    "rate": 0.05,
    "unit": "USD per active session minute",
    "billing": "per second",
    "source": "https://developers.openai.com/api/docs/models/gpt-live-1"
  },
  "vapi": {
    "rate": 0.05,
    "unit": "USD per hosting minute",
    "billing": "usage-only hosting",
    "source": "https://vapi.ai/pricing"
  },
  "exclusions": [
    "Backend models and tools",
    "Carrier and extra call legs",
    "Separate speech where applicable",
    "Fixed fees",
    "Taxes, discounts, retries and failed initialization"
  ],
  "formulas": {
    "minutes": "calls * seconds / 60",
    "subtotal": "minutes * (base + model + speech) + carrierMinutes * carrier + fixed; unknown components excluded",
    "carrierMinutes": "calls * (roundCarrier ? ceil(seconds / 60) : seconds / 60)",
    "perSuccess": "subtotal / (calls * success / 100); undefined for zero calls or success"
  },
  "sample": {
    "inputs": {
      "calls": 1000,
      "seconds": 180,
      "success": 70,
      "model": null,
      "speech": 0,
      "carrier": null,
      "fixed": null,
      "roundCarrier": false
    },
    "baseRoute": "direct",
    "expected": {
      "subtotal": 150,
      "perSuccess": 0.21428571428571427
    },
    "excluded": [
      "model",
      "carrier",
      "fixed"
    ]
  }
}