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        "cache_creation": {
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          "ephemeral_1h_input_tokens": 0
        },
        "output_tokens": 25,
        "output_tokens_details": {
          "thinking_tokens": 20
        },
        "service_tier": "standard",
        "inference_geo": "global"
      },
      "stopReason": "end_turn",
      "temperature": null,
      "output": "Negative"
    },
    {
      "taskId": "follow_format_primes",
      "category": "instruction",
      "model": "claude-opus-5",
      "pass": true,
      "ms": 4061,
      "usage": {
        "input_tokens": 37,
        "cache_creation_input_tokens": 0,
        "cache_read_input_tokens": 0,
        "cache_creation": {
          "ephemeral_5m_input_tokens": 0,
          "ephemeral_1h_input_tokens": 0
        },
        "output_tokens": 7,
        "output_tokens_details": {
          "thinking_tokens": 0
        },
        "service_tier": "standard",
        "inference_geo": "global"
      },
      "stopReason": "end_turn",
      "temperature": null,
      "output": "2,3,5"
    },
    {
      "taskId": "constraint_no_e",
      "category": "instruction",
      "model": "claude-opus-5",
      "pass": false,
      "ms": 4250,
      "usage": {
        "input_tokens": 51,
        "cache_creation_input_tokens": 0,
        "cache_read_input_tokens": 0,
        "cache_creation": {
          "ephemeral_5m_input_tokens": 0,
          "ephemeral_1h_input_tokens": 0
        },
        "output_tokens": 117,
        "output_tokens_details": {
          "thinking_tokens": 97
        },
        "service_tier": "standard",
        "inference_geo": "global"
      },
      "stopReason": "end_turn",
      "temperature": null,
      "output": "Vast blue sky holds bright drifting clouds."
    },
    {
      "taskId": "exact_word_count",
      "category": "instruction",
      "model": "claude-opus-5",
      "pass": true,
      "ms": 3313,
      "usage": {
        "input_tokens": 26,
        "cache_creation_input_tokens": 0,
        "cache_read_input_tokens": 0,
        "cache_creation": {
          "ephemeral_5m_input_tokens": 0,
          "ephemeral_1h_input_tokens": 0
        },
        "output_tokens": 57,
        "output_tokens_details": {
          "thinking_tokens": 45
        },
        "service_tier": "standard",
        "inference_geo": "global"
      },
      "stopReason": "end_turn",
      "temperature": null,
      "output": "Soft grey water falling gently"
    },
    {
      "taskId": "json_emit",
      "category": "json",
      "model": "claude-opus-5",
      "pass": false,
      "ms": 3191,
      "usage": {
        "input_tokens": 63,
        "cache_creation_input_tokens": 0,
        "cache_read_input_tokens": 0,
        "cache_creation": {
          "ephemeral_5m_input_tokens": 0,
          "ephemeral_1h_input_tokens": 0
        },
        "output_tokens": 20,
        "output_tokens_details": {
          "thinking_tokens": 0
        },
        "service_tier": "standard",
        "inference_geo": "global"
      },
      "stopReason": "end_turn",
      "temperature": null,
      "output": "`{\"name\": \"winthrop\", \"version\": 1}`"
    },
    {
      "taskId": "js_reverse_words",
      "category": "code",
      "model": "claude-opus-5",
      "pass": true,
      "ms": 3130,
      "usage": {
        "input_tokens": 72,
        "cache_creation_input_tokens": 0,
        "cache_read_input_tokens": 0,
        "cache_creation": {
          "ephemeral_5m_input_tokens": 0,
          "ephemeral_1h_input_tokens": 0
        },
        "output_tokens": 40,
        "output_tokens_details": {
          "thinking_tokens": 0
        },
        "service_tier": "standard",
        "inference_geo": "global"
      },
      "stopReason": "end_turn",
      "temperature": null,
      "output": "```javascript\nfunction reverseWords(s) {\n  return s.split(' ').reverse().join(' ');\n}\n```"
    },
    {
      "taskId": "js_sum_divisibles",
      "category": "code",
      "model": "claude-opus-5",
      "pass": true,
      "ms": 4189,
      "usage": {
        "input_tokens": 72,
        "cache_creation_input_tokens": 0,
        "cache_read_input_tokens": 0,
        "cache_creation": {
          "ephemeral_5m_input_tokens": 0,
          "ephemeral_1h_input_tokens": 0
        },
        "output_tokens": 149,
        "output_tokens_details": {
          "thinking_tokens": 0
        },
        "service_tier": "standard",
        "inference_geo": "global"
      },
      "stopReason": "end_turn",
      "temperature": null,
      "output": "```javascript\nfunction sumDivisibles(n) {\n  if (!Number.isFinite(n) || n <= 1) return 0;\n\n  const limit = Math.floor(n - 1);\n\n  const sumMultiples = (k) => {\n    const count = Math.floor(limit / k);\n    return k * count * (count + 1) / 2;\n  };\n\n  return sumMultiples(3) + sumMultiples(5) - sumMultiples(15);\n}\n```"
    }
  ]
}