{
  "baseline": {
    "age_matched": {
      "buckets_used": 5,
      "gap": 0.012400840017707804,
      "tagged_lines_covered": 1.0,
      "tagged_rate": 0.8480851174995355,
      "untagged_rate": 0.8356842774818277
    },
    "by_age": [
      {
        "from_days": 0,
        "tagged": {
          "cap_lines": 1394,
          "capped_survival_rate": 0.8634585108677687,
          "commits": 26,
          "introduced": 7246,
          "largest_commit_share": 0.42561413193486064,
          "median_survival": 0.8935483870967742,
          "survival_rate": 0.8624068451559481,
          "surviving": 6249
        },
        "to_days": 30,
        "untagged": {
          "cap_lines": 2612,
          "capped_survival_rate": 0.858985557905403,
          "commits": 930,
          "introduced": 636546,
          "largest_commit_share": 0.0844369456410063,
          "median_survival": 0.8835616438356164,
          "survival_rate": 0.8726392122486042,
          "surviving": 555475
        }
      },
      {
        "from_days": 30,
        "tagged": {
          "cap_lines": 3183,
          "capped_survival_rate": 0.8123254452869192,
          "commits": 40,
          "introduced": 43429,
          "largest_commit_share": 0.341154528080315,
          "median_survival": 0.7786282914880588,
          "survival_rate": 0.7080752492574086,
          "surviving": 30751
        },
        "to_days": 90,
        "untagged": {
          "cap_lines": 2481,
          "capped_survival_rate": 0.8170682660997907,
          "commits": 777,
          "introduced": 510555,
          "largest_commit_share": 0.1222003505988581,
          "median_survival": 0.8493150684931506,
          "survival_rate": 0.8498575080059935,
          "surviving": 433899
        }
      },
      {
        "from_days": 90,
        "tagged": {
          "cap_lines": 5313,
          "capped_survival_rate": 0.7660206321104255,
          "commits": 102,
          "introduced": 85753,
          "largest_commit_share": 0.13003626695275966,
          "median_survival": 0.8055555555555556,
          "survival_rate": 0.7645330192529708,
          "surviving": 65561
        },
        "to_days": 180,
        "untagged": {
          "cap_lines": 2015,
          "capped_survival_rate": 0.703002423756786,
          "commits": 468,
          "introduced": 254897,
          "largest_commit_share": 0.16033535114183375,
          "median_survival": 0.7777777777777778,
          "survival_rate": 0.7437867060028168,
          "surviving": 189589
        }
      },
      {
        "from_days": 180,
        "tagged": {
          "cap_lines": 3241,
          "capped_survival_rate": 0.7394157396625373,
          "commits": 179,
          "introduced": 551793,
          "largest_commit_share": 0.78786972650976,
          "median_survival": 0.66,
          "survival_rate": 0.8718414332911073,
          "surviving": 481076
        },
        "to_days": 365,
        "untagged": {
          "cap_lines": 1454,
          "capped_survival_rate": 0.6940242454302672,
          "commits": 509,
          "introduced": 342904,
          "largest_commit_share": 0.31568310664209226,
          "median_survival": 0.6666666666666666,
          "survival_rate": 0.8487069267200149,
          "surviving": 291025
        }
      },
      {
        "from_days": 365,
        "tagged": {
          "cap_lines": 411,
          "capped_survival_rate": 0.8891656288916563,
          "commits": 7,
          "introduced": 803,
          "largest_commit_share": 0.5118306351183064,
          "median_survival": 0.8636363636363636,
          "survival_rate": 0.8891656288916563,
          "surviving": 714
        },
        "to_days": 730,
        "untagged": {
          "cap_lines": 906,
          "capped_survival_rate": 0.5589785354311775,
          "commits": 1248,
          "introduced": 324715,
          "largest_commit_share": 0.06282432286774556,
          "median_survival": 0.4221977791280616,
          "survival_rate": 0.6007914632831868,
          "surviving": 195086
        }
      },
      {
        "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": 474,
          "capped_survival_rate": 0.3871226913052009,
          "commits": 28,
          "introduced": 6132,
          "largest_commit_share": 0.2144487932159165,
          "median_survival": 0.23305164319248825,
          "survival_rate": 0.34915198956294846,
          "surviving": 2141
        }
      }
    ],
    "oldest_surviving": {
      "age_days": 857,
      "commits_before": 0,
      "date": "2024-06-14",
      "introduced_before": 0,
      "tagged_commits_before": 0,
      "tagged_introduced_before": 0
    },
    "untagged": {
      "cap_lines": 1974,
      "capped_survival_rate": 0.7547704497351276,
      "commits": 3960,
      "introduced": 2075749,
      "largest_commit_share": 0.05214936873388835,
      "median_survival": 0.7586206896551724,
      "survival_rate": 0.8031871868901298,
      "surviving": 1667215
    }
  },
  "by_agent": {
    "claude-code": {
      "cap_lines": 4008,
      "capped_survival_rate": 0.7633857248643127,
      "commits": 338,
      "introduced": 682483,
      "largest_commit_share": 0.6369990168253276,
      "median_survival": 0.75,
      "survival_rate": 0.8493735375093592,
      "surviving": 579683
    },
    "cursor": {
      "cap_lines": 873,
      "capped_survival_rate": 0.8762975778546713,
      "commits": 3,
      "introduced": 1156,
      "largest_commit_share": 0.7551903114186851,
      "median_survival": 0.8541666666666666,
      "survival_rate": 0.8762975778546713,
      "surviving": 1013
    },
    "devin": {
      "cap_lines": 1660,
      "capped_survival_rate": 0.6961992136304063,
      "commits": 7,
      "introduced": 3815,
      "largest_commit_share": 0.4351245085190039,
      "median_survival": 0.6421895861148198,
      "survival_rate": 0.6961992136304063,
      "surviving": 2656
    },
    "github-copilot": {
      "cap_lines": 1152,
      "capped_survival_rate": 0.5932203389830508,
      "commits": 4,
      "introduced": 1357,
      "largest_commit_share": 0.8489314664701547,
      "median_survival": 0.604470802919708,
      "survival_rate": 0.5932203389830508,
      "surviving": 805
    },
    "openai-codex": {
      "cap_lines": 129,
      "capped_survival_rate": 0.9107981220657277,
      "commits": 2,
      "introduced": 213,
      "largest_commit_share": 0.6056338028169014,
      "median_survival": 0.9097452934662237,
      "survival_rate": 0.9107981220657277,
      "surviving": 194
    }
  },
  "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": "92d18f095d078d32adc409beae4c2990c598bc1e",
    "origin": "https://github.com/pydantic/pydantic-ai"
  },
  "total_commits": 4314,
  "verified": {
    "cap_lines": 3781,
    "capped_survival_rate": 0.7617208546488456,
    "commits": 354,
    "introduced": 689024,
    "largest_commit_share": 0.6309518971762957,
    "median_survival": 0.75,
    "survival_rate": 0.8480851174995355,
    "surviving": 584351
  }
}