{
  "baseline": {
    "age_matched": {
      "buckets_used": 5,
      "gap": 0.10756019940061756,
      "tagged_lines_covered": 1.0,
      "tagged_rate": 0.8224771807574356,
      "untagged_rate": 0.714916981356818
    },
    "by_age": [
      {
        "from_days": 0,
        "tagged": {
          "cap_lines": 10000,
          "capped_survival_rate": 0.903458929527533,
          "commits": 28,
          "introduced": 187813,
          "largest_commit_share": 0.3027159994249599,
          "median_survival": 0.8947368421052632,
          "survival_rate": 0.9007363707517584,
          "surviving": 169170
        },
        "to_days": 30,
        "untagged": {
          "cap_lines": 5675,
          "capped_survival_rate": 0.8408254935861168,
          "commits": 1084,
          "introduced": 1571577,
          "largest_commit_share": 0.09407620498391106,
          "median_survival": 0.8571428571428571,
          "survival_rate": 0.852076608400352,
          "surviving": 1339104
        }
      },
      {
        "from_days": 30,
        "tagged": {
          "cap_lines": 5253,
          "capped_survival_rate": 0.7950356871029329,
          "commits": 170,
          "introduced": 191180,
          "largest_commit_share": 0.09729051155978659,
          "median_survival": 0.7564959168522642,
          "survival_rate": 0.817465216026781,
          "surviving": 156283
        },
        "to_days": 90,
        "untagged": {
          "cap_lines": 3829,
          "capped_survival_rate": 0.7985093266766964,
          "commits": 2165,
          "introduced": 2161524,
          "largest_commit_share": 0.09040889668585683,
          "median_survival": 0.8119544592030361,
          "survival_rate": 0.8164096258010551,
          "surviving": 1764689
        }
      },
      {
        "from_days": 90,
        "tagged": {
          "cap_lines": 5813,
          "capped_survival_rate": 0.7640589611563652,
          "commits": 105,
          "introduced": 250914,
          "largest_commit_share": 0.5592354352487307,
          "median_survival": 0.7326328079392878,
          "survival_rate": 0.8249639318651012,
          "surviving": 206995
        },
        "to_days": 180,
        "untagged": {
          "cap_lines": 2999,
          "capped_survival_rate": 0.7234775370222194,
          "commits": 1552,
          "introduced": 1622318,
          "largest_commit_share": 0.21817917325703098,
          "median_survival": 0.7093596059113301,
          "survival_rate": 0.5712449717009859,
          "surviving": 926741
        }
      },
      {
        "from_days": 180,
        "tagged": {
          "cap_lines": 386,
          "capped_survival_rate": 0.2977545038423227,
          "commits": 186,
          "introduced": 17348,
          "largest_commit_share": 0.28533548535854275,
          "median_survival": 0.02449987040222437,
          "survival_rate": 0.4109983859810929,
          "surviving": 7130
        },
        "to_days": 365,
        "untagged": {
          "cap_lines": 1049,
          "capped_survival_rate": 0.491674189536878,
          "commits": 1972,
          "introduced": 571109,
          "largest_commit_share": 0.1145105400195059,
          "median_survival": 0.4375,
          "survival_rate": 0.5089974067997528,
          "surviving": 290693
        }
      },
      {
        "from_days": 365,
        "tagged": {
          "cap_lines": 976,
          "capped_survival_rate": 0.3161212797524052,
          "commits": 76,
          "introduced": 14029,
          "largest_commit_share": 0.09466105923444294,
          "median_survival": 0.1178714859437751,
          "survival_rate": 0.30743459975764487,
          "surviving": 4313
        },
        "to_days": 730,
        "untagged": {
          "cap_lines": 668,
          "capped_survival_rate": 0.3028324303535431,
          "commits": 2314,
          "introduced": 458333,
          "largest_commit_share": 0.19099213890337374,
          "median_survival": 0.007518796992481203,
          "survival_rate": 0.3198700508145824,
          "surviving": 146607
        }
      },
      {
        "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": 535,
      "commits_before": 0,
      "date": "2025-04-17",
      "introduced_before": 0,
      "tagged_commits_before": 0,
      "tagged_introduced_before": 0
    },
    "untagged": {
      "cap_lines": 2752,
      "capped_survival_rate": 0.7192316461110133,
      "commits": 9087,
      "introduced": 6384861,
      "largest_commit_share": 0.055436758920828506,
      "median_survival": 0.6163956566934741,
      "survival_rate": 0.6997543094516858,
      "surviving": 4467834
    }
  },
  "by_agent": {
    "claude-code": {
      "cap_lines": 4855,
      "capped_survival_rate": 0.776139070177606,
      "commits": 435,
      "introduced": 515502,
      "largest_commit_share": 0.27220068981303663,
      "median_survival": 0.5316455696202531,
      "survival_rate": 0.8253081462341563,
      "surviving": 425448
    },
    "cursor": {
      "cap_lines": 10000,
      "capped_survival_rate": 0.8804517207476663,
      "commits": 29,
      "introduced": 90443,
      "largest_commit_share": 0.23525314286346097,
      "median_survival": 0.7977713578208832,
      "survival_rate": 0.9092467078712559,
      "surviving": 82235
    },
    "gemini": {
      "cap_lines": 976,
      "capped_survival_rate": 0.31794607158732774,
      "commits": 69,
      "introduced": 13808,
      "largest_commit_share": 0.09617612977983778,
      "median_survival": 0.13333333333333333,
      "survival_rate": 0.30902375434530704,
      "surviving": 4267
    },
    "github-copilot": {
      "cap_lines": 8176,
      "capped_survival_rate": 0.7714451359494828,
      "commits": 21,
      "introduced": 36875,
      "largest_commit_share": 0.23365423728813559,
      "median_survival": 0.8055283757338552,
      "survival_rate": 0.772935593220339,
      "surviving": 28502
    },
    "jules": {
      "cap_lines": 46,
      "capped_survival_rate": 0.14166666666666666,
      "commits": 3,
      "introduced": 120,
      "largest_commit_share": 0.38333333333333336,
      "median_survival": 0.02702702702702703,
      "survival_rate": 0.14166666666666666,
      "surviving": 17
    },
    "openai-codex": {
      "cap_lines": 3944,
      "capped_survival_rate": 0.7544091710758377,
      "commits": 8,
      "introduced": 4536,
      "largest_commit_share": 0.8694885361552028,
      "median_survival": 0.6902300972068414,
      "survival_rate": 0.7544091710758377,
      "surviving": 3422
    }
  },
  "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": "544d753229f31feca679a85932437650f359e769",
    "origin": "https://github.com/QwenLM/qwen-code"
  },
  "total_commits": 9652,
  "verified": {
    "cap_lines": 4950,
    "capped_survival_rate": 0.7666940465821371,
    "commits": 565,
    "introduced": 661284,
    "largest_commit_share": 0.21219324828666655,
    "median_survival": 0.5261194029850746,
    "survival_rate": 0.8224771807574356,
    "surviving": 543891
  }
}