{
  "baseline": {
    "age_matched": {
      "buckets_used": 5,
      "gap": 0.09905036474379425,
      "tagged_lines_covered": 1.0,
      "tagged_rate": 0.8231210100637786,
      "untagged_rate": 0.7240706453199843
    },
    "by_age": [
      {
        "from_days": 0,
        "tagged": {
          "cap_lines": 10000,
          "capped_survival_rate": 0.9074120481997469,
          "commits": 25,
          "introduced": 176841,
          "largest_commit_share": 0.32149784269485016,
          "median_survival": 0.9142864964003174,
          "survival_rate": 0.9034895753812747,
          "surviving": 159774
        },
        "to_days": 30,
        "untagged": {
          "cap_lines": 6756,
          "capped_survival_rate": 0.8543216205381519,
          "commits": 1027,
          "introduced": 1641396,
          "largest_commit_share": 0.09007454630083173,
          "median_survival": 0.8776919773508081,
          "survival_rate": 0.8581061486685724,
          "surviving": 1408492
        }
      },
      {
        "from_days": 30,
        "tagged": {
          "cap_lines": 6689,
          "capped_survival_rate": 0.8105574035748734,
          "commits": 157,
          "introduced": 193907,
          "largest_commit_share": 0.09592227201699784,
          "median_survival": 0.771710404459764,
          "survival_rate": 0.8264580443202154,
          "surviving": 160256
        },
        "to_days": 90,
        "untagged": {
          "cap_lines": 3931,
          "capped_survival_rate": 0.793638384961142,
          "commits": 2203,
          "introduced": 2302540,
          "largest_commit_share": 0.0848719240490936,
          "median_survival": 0.8119544592030361,
          "survival_rate": 0.8155562986962225,
          "surviving": 1877851
        }
      },
      {
        "from_days": 90,
        "tagged": {
          "cap_lines": 5813,
          "capped_survival_rate": 0.7600636335156842,
          "commits": 104,
          "introduced": 254425,
          "largest_commit_share": 0.5515181291146704,
          "median_survival": 0.7042247433819557,
          "survival_rate": 0.8228672496806525,
          "surviving": 209358
        },
        "to_days": 180,
        "untagged": {
          "cap_lines": 3274,
          "capped_survival_rate": 0.7402231034801268,
          "commits": 1729,
          "introduced": 1840552,
          "largest_commit_share": 0.19230969839482936,
          "median_survival": 0.7259286558021417,
          "survival_rate": 0.6023084379034116,
          "surviving": 1108580
        }
      },
      {
        "from_days": 180,
        "tagged": {
          "cap_lines": 444,
          "capped_survival_rate": 0.3847099050577741,
          "commits": 205,
          "introduced": 22776,
          "largest_commit_share": 0.21733403582718652,
          "median_survival": 0.09876543209876543,
          "survival_rate": 0.49117492096944154,
          "surviving": 11187
        },
        "to_days": 365,
        "untagged": {
          "cap_lines": 1026,
          "capped_survival_rate": 0.499088475569863,
          "commits": 2044,
          "introduced": 584207,
          "largest_commit_share": 0.11194319821570094,
          "median_survival": 0.443340577460416,
          "survival_rate": 0.5140284180093699,
          "surviving": 300299
        }
      },
      {
        "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": 674,
          "capped_survival_rate": 0.3025392046339992,
          "commits": 2316,
          "introduced": 459674,
          "largest_commit_share": 0.19043496042847757,
          "median_survival": 0.007518796992481203,
          "survival_rate": 0.31923711151816286,
          "surviving": 146745
        }
      },
      {
        "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": 542,
      "commits_before": 0,
      "date": "2025-04-17",
      "introduced_before": 0,
      "tagged_commits_before": 0,
      "tagged_introduced_before": 0
    },
    "untagged": {
      "cap_lines": 2838,
      "capped_survival_rate": 0.7271047957587452,
      "commits": 9319,
      "introduced": 6828369,
      "largest_commit_share": 0.051836097316943476,
      "median_survival": 0.6243080404930116,
      "survival_rate": 0.7090956859537029,
      "surviving": 4841967
    }
  },
  "by_agent": {
    "claude-code": {
      "cap_lines": 4855,
      "capped_survival_rate": 0.7762681904450575,
      "commits": 436,
      "introduced": 515577,
      "largest_commit_share": 0.272161093299352,
      "median_survival": 0.5350535540408958,
      "survival_rate": 0.8256535881158391,
      "surviving": 425688
    },
    "cursor": {
      "cap_lines": 10000,
      "capped_survival_rate": 0.8818003570278892,
      "commits": 30,
      "introduced": 91062,
      "largest_commit_share": 0.23365399398212208,
      "median_survival": 0.7930885774611662,
      "survival_rate": 0.911291208187828,
      "surviving": 82984
    },
    "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": 0.7715549204973077,
      "commits": 21,
      "introduced": 36875,
      "largest_commit_share": 0.23365423728813559,
      "median_survival": 0.8055283757338552,
      "survival_rate": 0.7730440677966102,
      "surviving": 28506
    },
    "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": 0.7552910052910053,
      "commits": 8,
      "introduced": 4536,
      "largest_commit_share": 0.8694885361552028,
      "median_survival": 0.6902300972068414,
      "survival_rate": 0.7552910052910053,
      "surviving": 3426
    }
  },
  "coverage": {
    "blame_flags": [
      "-w",
      "-M",
      "-C"
    ],
    "ignore_revs_file": false,
    "method": "v4",
    "sample_floor": 5,
    "shallow": false,
    "small_sample": false
  },
  "method": "v4",
  "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": "7e5131d97b97f7a7c4d17867d1d4929bbe6e76d4",
    "origin": "https://github.com/QwenLM/qwen-code"
  },
  "total_commits": 9886,
  "verified": {
    "cap_lines": 4950,
    "capped_survival_rate": 0.7671246537913976,
    "commits": 567,
    "introduced": 661978,
    "largest_commit_share": 0.21197079057007936,
    "median_survival": 0.5261538461538462,
    "survival_rate": 0.8231210100637786,
    "surviving": 544888
  }
}
