{
  "meta": {
    "updated_at": "2026-07-29",
    "usd_jpy": {
      "rate": 163.83,
      "source": "https://open.er-api.com/v6/latest/USD",
      "fetched_at": "2026-07-29"
    },
    "token_estimation": {
      "ja_tokens_per_char": 1,
      "en_tokens_per_char": 0.25,
      "note": "文字数からの概算係数。トークナイザにより実際は0.7〜1.5倍程度の幅がある。正確な値は各社のトークンカウントAPIで確認のこと。"
    }
  },
  "providers": [
    {
      "id": "anthropic",
      "name": "Anthropic (Claude)",
      "source_url": "https://platform.claude.com/docs/en/pricing.md",
      "fetched_at": "2026-07-28",
      "cache_note": "キャッシュ読み取りは入力単価の約0.1倍。書き込みは1.25倍(5分TTL)/2倍(1時間TTL)。",
      "models": [
        {
          "id": "claude-fable-5",
          "name": "Claude Fable 5",
          "tier": "flagship",
          "input": 10,
          "output": 50,
          "cached_input": 1
        },
        {
          "id": "claude-opus-5",
          "name": "Claude Opus 5",
          "tier": "flagship",
          "input": 5,
          "output": 25,
          "cached_input": 0.5
        },
        {
          "id": "claude-sonnet-5",
          "name": "Claude Sonnet 5",
          "tier": "standard",
          "input": 3,
          "output": 15,
          "cached_input": 0.3,
          "notes": "2026-08-31まで導入価格 $2/$10"
        },
        {
          "id": "claude-haiku-4-5",
          "name": "Claude Haiku 4.5",
          "tier": "light",
          "input": 1,
          "output": 5,
          "cached_input": 0.1
        }
      ]
    },
    {
      "id": "openai",
      "name": "OpenAI (GPT)",
      "source_url": "https://developers.openai.com/api/docs/pricing",
      "fetched_at": "2026-07-28",
      "cache_note": "キャッシュ入力は通常入力の約0.1倍。",
      "models": [
        {
          "id": "gpt-5.6-sol",
          "name": "GPT-5.6 sol",
          "tier": "flagship",
          "input": 5,
          "output": 30,
          "cached_input": 0.5
        },
        {
          "id": "gpt-5.6-terra",
          "name": "GPT-5.6 terra",
          "tier": "standard",
          "input": 2.5,
          "output": 15,
          "cached_input": 0.25
        },
        {
          "id": "gpt-5.6-luna",
          "name": "GPT-5.6 luna",
          "tier": "light",
          "input": 1,
          "output": 6,
          "cached_input": 0.1
        },
        {
          "id": "gpt-5.5",
          "name": "GPT-5.5",
          "tier": "flagship",
          "input": 5,
          "output": 30,
          "cached_input": 0.5
        },
        {
          "id": "gpt-5.4-mini",
          "name": "GPT-5.4 mini",
          "tier": "light",
          "input": 0.75,
          "output": 4.5,
          "cached_input": 0.075
        },
        {
          "id": "gpt-5.4-nano",
          "name": "GPT-5.4 nano",
          "tier": "light",
          "input": 0.2,
          "output": 1.25,
          "cached_input": 0.02
        }
      ]
    },
    {
      "id": "google",
      "name": "Google (Gemini)",
      "source_url": "https://ai.google.dev/gemini-api/docs/pricing",
      "fetched_at": "2026-07-28",
      "cache_note": "コンテキストキャッシュは入力単価の約0.1倍+保持時間あたりのストレージ料金($1.00/1Mトークン/時間)。",
      "models": [
        {
          "id": "gemini-3-pro",
          "name": "Gemini 3 Pro",
          "tier": "flagship",
          "input": 2,
          "output": 12,
          "cached_input": 0.2,
          "notes": "20万トークン超は $4/$18"
        },
        {
          "id": "gemini-3.6-flash",
          "name": "Gemini 3.6 Flash",
          "tier": "standard",
          "input": 1.5,
          "output": 7.5,
          "cached_input": 0.15
        },
        {
          "id": "gemini-3.5-flash",
          "name": "Gemini 3.5 Flash",
          "tier": "standard",
          "input": 1.5,
          "output": 9,
          "cached_input": 0.15
        },
        {
          "id": "gemini-2.5-pro",
          "name": "Gemini 2.5 Pro",
          "tier": "standard",
          "input": 1.25,
          "output": 10,
          "cached_input": 0.125,
          "notes": "20万トークン超は $2.50/$15"
        }
      ]
    }
  ]
}