{
  "model_name": "google/gemma-4-E2B",
  "hook_name": "layer_10_output",
  "hook_layer": 10,
  "d_in": 1536,
  "d_sae": 6144,
  "dtype": "float32",
  "architecture": "topk",
  "k": 32,
  "expansion_factor": 4,
  "training_data": "V4 input-variation (neutral + V0 threat + V3 lie) x 50 trivia, all token positions, 4-bit quantized inference"
}