{
  "baseline": {
    "age_matched": {
      "buckets_used": 4,
      "gap": 0.08811421732533486,
      "tagged_lines_covered": 1.0,
      "tagged_rate": 0.6408551452952597,
      "untagged_rate": 0.5527409279699248
    },
    "by_age": [
      {
        "from_days": 0,
        "tagged": {
          "cap_lines": 3832,
          "capped_survival_rate": 0.8226675734146404,
          "commits": 198,
          "introduced": 160351,
          "largest_commit_share": 0.054998097922682114,
          "median_survival": 0.8858858858858859,
          "survival_rate": 0.8247531976726057,
          "surviving": 132250
        },
        "to_days": 30,
        "untagged": {
          "cap_lines": 3084,
          "capped_survival_rate": 0.8379723720622962,
          "commits": 250,
          "introduced": 166411,
          "largest_commit_share": 0.11598391933225569,
          "median_survival": 0.9024390243902439,
          "survival_rate": 0.8746837648953495,
          "surviving": 145557
        }
      },
      {
        "from_days": 30,
        "tagged": {
          "cap_lines": 6673,
          "capped_survival_rate": 0.7312159020359159,
          "commits": 174,
          "introduced": 327217,
          "largest_commit_share": 0.3265875550475678,
          "median_survival": 0.7537442170469693,
          "survival_rate": 0.7167200970609717,
          "surviving": 234523
        },
        "to_days": 90,
        "untagged": {
          "cap_lines": 3424,
          "capped_survival_rate": 0.7204394860670681,
          "commits": 1276,
          "introduced": 1116206,
          "largest_commit_share": 0.06426322739709336,
          "median_survival": 0.7202488594261387,
          "survival_rate": 0.7211124111499132,
          "surviving": 804910
        }
      },
      {
        "from_days": 90,
        "tagged": {
          "cap_lines": 220,
          "capped_survival_rate": 0.19220055710306408,
          "commits": 7,
          "introduced": 718,
          "largest_commit_share": 0.3064066852367688,
          "median_survival": 0.0,
          "survival_rate": 0.19220055710306408,
          "surviving": 138
        },
        "to_days": 180,
        "untagged": {
          "cap_lines": 1442,
          "capped_survival_rate": 0.42439363558807225,
          "commits": 864,
          "introduced": 551649,
          "largest_commit_share": 0.353244544991471,
          "median_survival": 0.31715648598860546,
          "survival_rate": 0.5546008422021974,
          "surviving": 305945
        }
      },
      {
        "from_days": 180,
        "tagged": {
          "cap_lines": 851,
          "capped_survival_rate": 0.25109404817600106,
          "commits": 1152,
          "introduced": 365183,
          "largest_commit_share": 0.33783062190737245,
          "median_survival": 0.0,
          "survival_rate": 0.4930103537130699,
          "surviving": 180039
        },
        "to_days": 365,
        "untagged": {
          "cap_lines": 1120,
          "capped_survival_rate": 0.23706455655465963,
          "commits": 3178,
          "introduced": 873519,
          "largest_commit_share": 0.02832222309989823,
          "median_survival": 0.003338907469342252,
          "survival_rate": 0.2605060679847834,
          "surviving": 227557
        }
      },
      {
        "from_days": 365,
        "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": 730,
        "untagged": {
          "cap_lines": 704,
          "capped_survival_rate": 0.10297528521403783,
          "commits": 2732,
          "introduced": 845642,
          "largest_commit_share": 0.1338001187263641,
          "median_survival": 0.0,
          "survival_rate": 0.323307025904579,
          "surviving": 273402
        }
      },
      {
        "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": 672,
      "commits_before": 0,
      "date": "2024-12-09",
      "introduced_before": 0,
      "tagged_commits_before": 0,
      "tagged_introduced_before": 0
    },
    "untagged": {
      "cap_lines": 1316,
      "capped_survival_rate": 0.380701405343555,
      "commits": 8300,
      "introduced": 3553427,
      "largest_commit_share": 0.05483917356399892,
      "median_survival": 0.012195121951219513,
      "survival_rate": 0.4945566631873963,
      "surviving": 1757371
    }
  },
  "by_agent": {
    "claude-code": {
      "cap_lines": 2790,
      "capped_survival_rate": 0.6354025751199923,
      "commits": 33,
      "introduced": 20468,
      "largest_commit_share": 0.5618526480359586,
      "median_survival": 0.5136298421807748,
      "survival_rate": 0.7789720539378542,
      "surviving": 15944
    },
    "cursor": {
      "cap_lines": 4130,
      "capped_survival_rate": 0.6643702784951482,
      "commits": 194,
      "introduced": 446736,
      "largest_commit_share": 0.2761586261237062,
      "median_survival": 0.684931506849315,
      "survival_rate": 0.7695171197306687,
      "surviving": 343771
    },
    "devin": {
      "cap_lines": 1237,
      "capped_survival_rate": 0.4267272952938572,
      "commits": 1299,
      "introduced": 385886,
      "largest_commit_share": 0.022853899856434285,
      "median_survival": 0.04384439359267735,
      "survival_rate": 0.4844150863208305,
      "surviving": 186929
    },
    "openai-codex": {
      "cap_lines": 347,
      "capped_survival_rate": 0.8073878627968337,
      "commits": 5,
      "introduced": 379,
      "largest_commit_share": 0.9155672823218998,
      "median_survival": 0.9106628242074928,
      "survival_rate": 0.8073878627968337,
      "surviving": 306
    }
  },
  "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": "494c0fd3baccb71c908ff3b82e729d8fd19174b3",
    "origin": "https://github.com/fastrepl/anarlog"
  },
  "total_commits": 9831,
  "verified": {
    "cap_lines": 1615,
    "capped_survival_rate": 0.49198198752189193,
    "commits": 1531,
    "introduced": 853469,
    "largest_commit_share": 0.14455123736187256,
    "median_survival": 0.14285714285714285,
    "survival_rate": 0.6408551452952597,
    "surviving": 546950
  }
}