{
  "baseline": {
    "age_matched": {
      "buckets_used": 2,
      "gap": 0.0796363062417137,
      "tagged_lines_covered": 0.9986297496574374,
      "tagged_rate": 0.5896404146883304,
      "untagged_rate": 0.5100041084466167
    },
    "by_age": [
      {
        "from_days": 0,
        "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": 30,
        "untagged": {
          "cap_lines": 1011,
          "capped_survival_rate": 0.8239205019404229,
          "commits": 1323,
          "introduced": 408642,
          "largest_commit_share": 0.02096700779655542,
          "median_survival": 0.8695652173913043,
          "survival_rate": 0.8235962040123139,
          "surviving": 336556
        }
      },
      {
        "from_days": 30,
        "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": 90,
        "untagged": {
          "cap_lines": 1134,
          "capped_survival_rate": 0.7776855635189924,
          "commits": 2605,
          "introduced": 960482,
          "largest_commit_share": 0.017564098025782886,
          "median_survival": 0.8081632653061225,
          "survival_rate": 0.7833743891088016,
          "surviving": 752417
        }
      },
      {
        "from_days": 90,
        "tagged": {
          "cap_lines": 1594,
          "capped_survival_rate": 0.6350511353534087,
          "commits": 112,
          "introduced": 56003,
          "largest_commit_share": 0.036069496276985163,
          "median_survival": 0.6650124069478908,
          "survival_rate": 0.6321804189061301,
          "surviving": 35404
        },
        "to_days": 180,
        "untagged": {
          "cap_lines": 1163,
          "capped_survival_rate": 0.6635876626649226,
          "commits": 2625,
          "introduced": 823341,
          "largest_commit_share": 0.0167184678037411,
          "median_survival": 0.6863905325443787,
          "survival_rate": 0.6601201689215039,
          "surviving": 543504
        }
      },
      {
        "from_days": 180,
        "tagged": {
          "cap_lines": 1898,
          "capped_survival_rate": 0.5571102186882554,
          "commits": 248,
          "introduced": 127653,
          "largest_commit_share": 0.08865439903488363,
          "median_survival": 0.5254237288135594,
          "survival_rate": 0.5709775720116252,
          "surviving": 72887
        },
        "to_days": 365,
        "untagged": {
          "cap_lines": 1163,
          "capped_survival_rate": 0.4378298666110001,
          "commits": 3813,
          "introduced": 1358298,
          "largest_commit_share": 0.09876919497783256,
          "median_survival": 0.347001640882392,
          "survival_rate": 0.4441462771792346,
          "surviving": 603283
        }
      },
      {
        "from_days": 365,
        "tagged": {
          "cap_lines": 142,
          "capped_survival_rate": 0.19444444444444445,
          "commits": 4,
          "introduced": 252,
          "largest_commit_share": 0.5634920634920635,
          "median_survival": 0.4854111405835544,
          "survival_rate": 0.19444444444444445,
          "surviving": 49
        },
        "to_days": 730,
        "untagged": {
          "cap_lines": 632,
          "capped_survival_rate": 0.21953289999970624,
          "commits": 1607,
          "introduced": 304809,
          "largest_commit_share": 0.11773602485490914,
          "median_survival": 0.0,
          "survival_rate": 0.18816373532277592,
          "surviving": 57354
        }
      },
      {
        "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": 550,
      "commits_before": 0,
      "date": "2025-04-16",
      "introduced_before": 0,
      "tagged_commits_before": 0,
      "tagged_introduced_before": 0
    },
    "untagged": {
      "cap_lines": 1081,
      "capped_survival_rate": 0.6203192926279922,
      "commits": 11973,
      "introduced": 3855572,
      "largest_commit_share": 0.03479587464583724,
      "median_survival": 0.6302858844550328,
      "survival_rate": 0.5947532558074392,
      "surviving": 2293114
    }
  },
  "by_agent": {
    "claude-code": {
      "cap_lines": 930,
      "capped_survival_rate": 0.4666666666666667,
      "commits": 10,
      "introduced": 2250,
      "largest_commit_share": 0.41333333333333333,
      "median_survival": 0.5254237288135594,
      "survival_rate": 0.4666666666666667,
      "surviving": 1050
    },
    "github-copilot": {
      "cap_lines": 138,
      "capped_survival_rate": 0.5695652173913044,
      "commits": 3,
      "introduced": 230,
      "largest_commit_share": 0.6,
      "median_survival": 0.16666666666666666,
      "survival_rate": 0.5695652173913044,
      "surviving": 131
    },
    "openai-codex": {
      "cap_lines": 1885,
      "capped_survival_rate": 0.5844488603636215,
      "commits": 351,
      "introduced": 181428,
      "largest_commit_share": 0.06237736181846242,
      "median_survival": 0.5824190177638453,
      "survival_rate": 0.5906420177701347,
      "surviving": 107159
    }
  },
  "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": "eb354a928b347856055b29fb55ecd740addf8f77",
    "origin": "https://github.com/openai/codex"
  },
  "total_commits": 12337,
  "verified": {
    "cap_lines": 1874,
    "capped_survival_rate": 0.5827880143036193,
    "commits": 364,
    "introduced": 183908,
    "largest_commit_share": 0.06153620288405072,
    "median_survival": 0.5802174656976176,
    "survival_rate": 0.5890988972747243,
    "surviving": 108340
  }
}
