SAE timeline
Drop a .jsonl produced byposttrainllm sae --checkpoint-dir … --timeline-out …. The page plots reconstruction MSE and L0 feature activity across training checkpoints, with group-SAE rows filterable by layer group.
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Reconstruction MSE
L0 feature activity
Latest checkpoint summary
Timeline rows
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Drop JSONL rows with step, mse, l0_per_sample, l0_frac, sae_path, ckpt_path.
B13 feature-emergence viewer · training dashboard · interp docs