{
  "lr_tfidf": {
    "model": "LR + TF-IDF (Baseline)",
    "artifact": "models/baseline/lr_tfidf.joblib",
    "source": "Optuna-tuned sklearn pipeline (Notebook 06 → final_model.joblib)",
    "f1_weighted_test": 0.7579,
    "train_test_gap_pp": 4.76,
    "roc_auc_test": 0.81,
    "role": "Esencial sklearn baseline — fast CPU inference"
  },
  "frozen_toxic_bert": {
    "model": "Frozen Toxic-BERT (Baseline)",
    "hub_model_id": "unitary/toxic-bert",
    "freeze_mode": "inference_only",
    "evaluation_source": "reports/golden_baseline/golden_baseline_run_20260524_213342.json",
    "f1_weighted_test": 0.7903,
    "train_test_gap_pp": 0.16,
    "threshold": 0.12,
    "roc_auc_test": 0.8759,
    "role": "Transformer baseline — all layers frozen, no fine-tuning on 1k rows"
  }
}