{
  "baseline": {
    "age_matched": {
      "buckets_used": 5,
      "gap": 0.1271270813378509,
      "tagged_lines_covered": 1.0,
      "tagged_rate": 0.8688414759843331,
      "untagged_rate": 0.7417143946464823
    },
    "by_age": [
      {
        "from_days": 0,
        "tagged": {
          "cap_lines": 10000,
          "capped_survival_rate": 0.9076872778698143,
          "commits": 47,
          "introduced": 226387,
          "largest_commit_share": 0.25113632849942796,
          "median_survival": 0.8846560747488554,
          "survival_rate": 0.9317628662423195,
          "surviving": 210939
        },
        "to_days": 30,
        "untagged": {
          "cap_lines": 5319,
          "capped_survival_rate": 0.8557154556636525,
          "commits": 1141,
          "introduced": 1427221,
          "largest_commit_share": 0.046866602999815724,
          "median_survival": 0.8746355685131195,
          "survival_rate": 0.864838031391074,
          "surviving": 1234315
        }
      },
      {
        "from_days": 30,
        "tagged": {
          "cap_lines": 4379,
          "capped_survival_rate": 0.8515780293736905,
          "commits": 171,
          "introduced": 160031,
          "largest_commit_share": 0.06183177009454418,
          "median_survival": 0.8204710144927536,
          "survival_rate": 0.8608957014578426,
          "surviving": 137770
        },
        "to_days": 90,
        "untagged": {
          "cap_lines": 3778,
          "capped_survival_rate": 0.8345582697549302,
          "commits": 2133,
          "introduced": 2077118,
          "largest_commit_share": 0.09408276275108106,
          "median_survival": 0.8459001897167111,
          "survival_rate": 0.8412319377136975,
          "surviving": 1747338
        }
      },
      {
        "from_days": 90,
        "tagged": {
          "cap_lines": 3350,
          "capped_survival_rate": 0.8239917019235542,
          "commits": 219,
          "introduced": 250747,
          "largest_commit_share": 0.5596078916198399,
          "median_survival": 0.3667953667953668,
          "survival_rate": 0.8675517553549993,
          "surviving": 217536
        },
        "to_days": 180,
        "untagged": {
          "cap_lines": 2819,
          "capped_survival_rate": 0.8013732757980668,
          "commits": 1374,
          "introduced": 1415274,
          "largest_commit_share": 0.2500971543319527,
          "median_survival": 0.7972945960849187,
          "survival_rate": 0.5929240556952222,
          "surviving": 839150
        }
      },
      {
        "from_days": 180,
        "tagged": {
          "cap_lines": 665,
          "capped_survival_rate": 0.1901295558581945,
          "commits": 50,
          "introduced": 8542,
          "largest_commit_share": 0.16026691641301802,
          "median_survival": 0.10545454545454545,
          "survival_rate": 0.1778272067431515,
          "surviving": 1519
        },
        "to_days": 365,
        "untagged": {
          "cap_lines": 1052,
          "capped_survival_rate": 0.559643014179695,
          "commits": 1916,
          "introduced": 567835,
          "largest_commit_share": 0.1151707802442611,
          "median_survival": 0.525516795865633,
          "survival_rate": 0.5733514137029243,
          "surviving": 325569
        }
      },
      {
        "from_days": 365,
        "tagged": {
          "cap_lines": 976,
          "capped_survival_rate": 0.3897395609687128,
          "commits": 76,
          "introduced": 14029,
          "largest_commit_share": 0.09466105923444294,
          "median_survival": 0.15476190476190477,
          "survival_rate": 0.387910756290541,
          "surviving": 5442
        },
        "to_days": 730,
        "untagged": {
          "cap_lines": 668,
          "capped_survival_rate": 0.3662493783162441,
          "commits": 2312,
          "introduced": 457872,
          "largest_commit_share": 0.19118443582485936,
          "median_survival": 0.009259259259259259,
          "survival_rate": 0.3815607855470525,
          "surviving": 174706
        }
      },
      {
        "from_days": 730,
        "tagged": {
          "cap_lines": null,
          "capped_survival_rate": null,
          "commits": 0,
          "introduced": 0,
          "largest_commit_share": null,
          "median_survival": null,
          "survival_rate": null,
          "surviving": 0
        },
        "to_days": null,
        "untagged": {
          "cap_lines": null,
          "capped_survival_rate": null,
          "commits": 0,
          "introduced": 0,
          "largest_commit_share": null,
          "median_survival": null,
          "survival_rate": null,
          "surviving": 0
        }
      }
    ],
    "oldest_surviving": {
      "age_days": 528,
      "commits_before": 0,
      "date": "2025-04-17",
      "introduced_before": 0,
      "tagged_commits_before": 0,
      "tagged_introduced_before": 0
    },
    "untagged": {
      "cap_lines": 2645,
      "capped_survival_rate": 0.7638646642894718,
      "commits": 8876,
      "introduced": 5945320,
      "largest_commit_share": 0.05953523107250745,
      "median_survival": 0.6955704478587774,
      "survival_rate": 0.7268032671075737,
      "surviving": 4321078
    }
  },
  "by_agent": {
    "claude-code": {
      "cap_lines": 4855,
      "capped_survival_rate": 0.8347695358806105,
      "commits": 433,
      "introduced": 513954,
      "largest_commit_share": 0.2730205426944824,
      "median_survival": 0.6612903225806451,
      "survival_rate": 0.8733194021254821,
      "surviving": 448846
    },
    "cursor": {
      "cap_lines": 10000,
      "capped_survival_rate": 0.8965620284420286,
      "commits": 29,
      "introduced": 90443,
      "largest_commit_share": 0.23525314286346097,
      "median_survival": 0.8521739130434782,
      "survival_rate": 0.9179151509790697,
      "surviving": 83019
    },
    "gemini": {
      "cap_lines": 976,
      "capped_survival_rate": 0.39135556180790265,
      "commits": 69,
      "introduced": 13808,
      "largest_commit_share": 0.09617612977983778,
      "median_survival": 0.16666666666666666,
      "survival_rate": 0.3894119351100811,
      "surviving": 5377
    },
    "github-copilot": {
      "cap_lines": 8176,
      "capped_survival_rate": 0.8798496298275544,
      "commits": 21,
      "introduced": 36875,
      "largest_commit_share": 0.23365423728813559,
      "median_survival": 0.9070146818923328,
      "survival_rate": 0.880542372881356,
      "surviving": 32470
    },
    "jules": {
      "cap_lines": 46,
      "capped_survival_rate": 0.275,
      "commits": 3,
      "introduced": 120,
      "largest_commit_share": 0.38333333333333336,
      "median_survival": 0.02702702702702703,
      "survival_rate": 0.275,
      "surviving": 33
    },
    "openai-codex": {
      "cap_lines": 3944,
      "capped_survival_rate": 0.7630070546737213,
      "commits": 8,
      "introduced": 4536,
      "largest_commit_share": 0.8694885361552028,
      "median_survival": 0.74829663832423,
      "survival_rate": 0.7630070546737213,
      "surviving": 3461
    }
  },
  "coverage": {
    "blame_flags": [
      "-w",
      "-M",
      "-C"
    ],
    "ignore_revs_file": false,
    "method": "v3",
    "sample_floor": 5,
    "shallow": false,
    "small_sample": false
  },
  "method": "v3",
  "probable": {
    "cap_lines": null,
    "capped_survival_rate": null,
    "commits": 0,
    "introduced": 0,
    "largest_commit_share": null,
    "median_survival": null,
    "survival_rate": null,
    "surviving": 0
  },
  "repository": {
    "head": "530fe1fc5882efb432260aa98fbd067b18d51e16",
    "origin": "https://github.com/QwenLM/qwen-code"
  },
  "total_commits": 9439,
  "verified": {
    "cap_lines": 4950,
    "capped_survival_rate": 0.8257806713856851,
    "commits": 563,
    "introduced": 659736,
    "largest_commit_share": 0.21269113706088497,
    "median_survival": 0.6582278481012658,
    "survival_rate": 0.8688414759843331,
    "surviving": 573206
  }
}
