New "+ Compare Strengths" button next to each LoRA's Model Strength slider. Enter comma-separated values (e.g., 0.5, 0.8, 1.0) to grid search different LoRA strengths. Outputs bracket notation in the config JSON (e.g., lora.safetensors:[0.5, 0.8, 1.0]:1.0) which the existing Python expansion code handles as Cartesian products. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>