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  "notes": [
    "首期从 2026-07-15 开始积累历史；delta7d 与 90 日轨迹不回填、不推测。",
    "Artificial Analysis API 需要 AA_API_KEY；首期 AA 四个数值已于 2026-07-15 从官方模型页交叉核验，抓取探针会显示 STALE/缺少 key。",
    "LMArena 使用 2026-07-13 10:00 UTC 的 style-control overall 快照，共 7,308,667 票。",
    "SWE-bench 仅展示精确的模型 + agent/harness 系统条目，不把系统分数归因给基础模型。",
    "仅有日期而无发布时间的官方条目统一记为当日 00:00 UTC；不表示真实发布时刻。",
    "contextK 以公开 token 上限除以 1000 后记录；1048K 代表 1,048,576 token 口径。",
    "Amazon Nova 2 Pro 仍为 Preview，仅通过 Nova Forge early access；价格未知字段保留 null。"
  ]
}