{
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  "codebook": "trellis",
  "block_diagonal": true,
  "codesz": 16,
  "bpw": 4,
  "tune_iters": 0,
  "nsamples": 128,
  "seqlen": 2048,
  "avg_sqnr_db": 22.42,
  "n_quantized_layers": 410,
  "total_time_s": 8515.2,
  "source_model": "google/gemma-4-31B-it"
}