{
  "base": {
    "bpt": 3.9199,
    "perplexity": 15.14
  },
  "scu_trained": {
    "bpt": 3.6761,
    "perplexity": 12.78,
    "adapter_path": "models/scu_fixed_sigma_20250903_222442"
  },
  "improvement": {
    "delta_bpt": 0.2438,
    "percent": 6.22,
    "better": true
  }
}