{
  "baseline": {
    "age_matched": {
      "buckets_used": 2,
      "gap": 0.04970892194180854,
      "tagged_lines_covered": 0.9986297496574374,
      "tagged_rate": 0.5935281177854249,
      "untagged_rate": 0.5438191958436164
    },
    "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": 1280,
          "capped_survival_rate": 0.8176164941669102,
          "commits": 1550,
          "introduced": 598605,
          "largest_commit_share": 0.014313278372215401,
          "median_survival": 0.8615384615384616,
          "survival_rate": 0.8135648716599427,
          "surviving": 487004
        }
      },
      {
        "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": 1046,
          "capped_survival_rate": 0.7650347806867577,
          "commits": 2319,
          "introduced": 772480,
          "largest_commit_share": 0.021838753106876555,
          "median_survival": 0.7952619843924191,
          "survival_rate": 0.7705429266777133,
          "surviving": 595229
        }
      },
      {
        "from_days": 90,
        "tagged": {
          "cap_lines": 1813,
          "capped_survival_rate": 0.6375953586779071,
          "commits": 197,
          "introduced": 99508,
          "largest_commit_share": 0.02631949190014873,
          "median_survival": 0.6451080225677721,
          "survival_rate": 0.6380592515174659,
          "surviving": 63492
        },
        "to_days": 180,
        "untagged": {
          "cap_lines": 1225,
          "capped_survival_rate": 0.6339716643602441,
          "commits": 2604,
          "introduced": 840939,
          "largest_commit_share": 0.016368606997653815,
          "median_survival": 0.6607142857142857,
          "survival_rate": 0.6355229095094888,
          "surviving": 534436
        }
      },
      {
        "from_days": 180,
        "tagged": {
          "cap_lines": 1898,
          "capped_survival_rate": 0.5121215701072743,
          "commits": 163,
          "introduced": 84148,
          "largest_commit_share": 0.13448923325569234,
          "median_survival": 0.4252857813968055,
          "survival_rate": 0.5408684698388554,
          "surviving": 45513
        },
        "to_days": 365,
        "untagged": {
          "cap_lines": 1090,
          "capped_survival_rate": 0.4278524189738993,
          "commits": 3515,
          "introduced": 1226601,
          "largest_commit_share": 0.10937378984690213,
          "median_survival": 0.33284953733046013,
          "survival_rate": 0.43537629595932176,
          "surviving": 534033
        }
      },
      {
        "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": 0.20855271025664637,
          "commits": 1491,
          "introduced": 287527,
          "largest_commit_share": 0.12481262629248731,
          "median_survival": 0.0,
          "survival_rate": 0.18005961179297944,
          "surviving": 51772
        }
      },
      {
        "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": 536,
      "commits_before": 0,
      "date": "2025-04-16",
      "introduced_before": 0,
      "tagged_commits_before": 0,
      "tagged_introduced_before": 0
    },
    "untagged": {
      "cap_lines": 1095,
      "capped_survival_rate": 0.616422671648519,
      "commits": 11479,
      "introduced": 3726152,
      "largest_commit_share": 0.036004435675195214,
      "median_survival": 0.6176318195672051,
      "survival_rate": 0.5910853878210014,
      "surviving": 2202474
    }
  },
  "by_agent": {
    "claude-code": {
      "cap_lines": 930,
      "capped_survival_rate": 0.48444444444444446,
      "commits": 10,
      "introduced": 2250,
      "largest_commit_share": 0.41333333333333333,
      "median_survival": 0.5254237288135594,
      "survival_rate": 0.48444444444444446,
      "surviving": 1090
    },
    "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": 0.5886457682872845,
      "commits": 351,
      "introduced": 181428,
      "largest_commit_share": 0.06237736181846242,
      "median_survival": 0.5833333333333334,
      "survival_rate": 0.5943569901007563,
      "surviving": 107833
    }
  },
  "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": "823ea830c0fd418b09ff02d36cad9a1fff66465b",
    "origin": "https://github.com/openai/codex"
  },
  "total_commits": 11843,
  "verified": {
    "cap_lines": 1874,
    "capped_survival_rate": 0.5871698639620602,
    "commits": 364,
    "introduced": 183908,
    "largest_commit_share": 0.06153620288405072,
    "median_survival": 0.5829784213515048,
    "survival_rate": 0.5929812732453184,
    "surviving": 109054
  }
}