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1{2  "name": "pangram_test",3  "created_at": "2026-11-10T17:15:49Z",4  "detector": {5    "vendor": "Pangram Labs",6    "model": "pangram-4.1",7    "served_versions": [8      "4.1"9    ],10    "ai_likelihood_definition": "word-weighted mean of windows[].ai_assistance_score",11    "flag_definition": "prediction_short == 'AI' (API's own label)"12  },13  "inputs": {14    "pairs": "data/pairs/medium_v1_haiku/validated/pairs.jsonl",15    "outputs_dir": "artifacts/predictions/medium_test",16    "systems": [17      "B0_identity",18      "htr-m1-tiny-s3",19      "htr-m1-small",20      "B2_t5-small"21    ],22    "passages": "data/parsed/medium_v1/passages.jsonl"23  },24  "sample": {25    "n_pairs": 54,26    "n_docs": 50,27    "seed": 20261110,28    "requested_n": 54,29    "by_discipline": {30      "other": 2,31      "engineering": 4,32      "social_sciences": 5,33      "chemistry": 3,34      "life_sciences": 7,35      "finance": 7,36      "biomedicine": 7,37      "humanities": 1,38      "economics": 7,39      "statistics": 3,40      "computer_science": 5,41      "mathematics": 2,42      "general_reference": 143    },44    "mean_words": {45      "original": 138.25925925925927,46      "rewrite": 133.33333333333334,47      "B0_identity": 133.33333333333334,48      "htr-m1-tiny-s3": 134.42592592592592,49      "htr-m1-small": 134.90740740740742,50      "B2_t5-small": 130.6666666666666651    }52  },53  "restoration": {54    "passages_found": 54,55    "protect_reproduces_target": 54,56    "restored": 504,57    "neutral": 0,58    "texts_with_neutral": 0,59    "neutral_by_kind": {}60  },61  "cost": {62    "model": "pangram-4.1",63    "texts_submitted": 0,64    "cache_hits": 269,65    "est_units": 0,66    "est_usd": 0.0,67    "ledger_run_texts": 269,68    "ledger_run_units": 485,69    "ledger_run_usd": 19.4,70    "ledger_run_requests": 171  },72  "n_boot": 2000,73  "caveat": "Detector scores measure one commercial classifier's behaviour; they are not evidence of authorship.",74  "conditions": {75    "original": {76      "n": 54,77      "n_docs": 50,78      "n_errors": 0,79      "ai_likelihood_mean": {80        "mean": 9.15551651970516e-18,81        "ci_low": 1.1095681003283814e-23,82        "ci_high": 2.9274231825918986e-17,83        "n_items": 54,84        "n_groups": 5085      },86      "ai_likelihood_median": 0.0,87      "frac_label_ai": {88        "mean": 0.0,89        "ci_low": 0.0,90        "ci_high": 0.0,91        "n_items": 54,92        "n_groups": 5093      },94      "frac_label_not_human": {95        "mean": 0.0,96        "ci_low": 0.0,97        "ci_high": 0.0,98        "n_items": 54,99        "n_groups": 50100      },101      "labels": {102        "Human": 54103      },104      "frac_score_positive": 0.2777777777777778,105      "fraction_ai_assisted_mean": 1.5625868731460758e-19106    },107    "rewrite": {108      "n": 54,109      "n_docs": 50,110      "n_errors": 0,111      "ai_likelihood_mean": {112        "mean": 0.187471966687167,113        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