agentic-ptb/grok.h003.sft-v1.step_1250

grok.h006.sft-v2.step_400

AgentPTB sweep checkpoint. Cell grok — pi / grok-4.6 @ effort xhigh.

field	value
plot cell	grok
driver	pi / grok-4.6
reasoning effort	xhigh
run boot (UTC)	2026-08-15T01:21:29Z
role	intermediate
hours into run	h6.56 of 100
checkpoint path in run	outputs/sft-v2/weights/step_400
shards	4
size	18.8 GB
base model	Qwen/Qwen3.5-9B-Base
eos_token_id	[248044] ⚠️ MISSING 248046

Reading the eos field

248046 is <|im_end|>, the token the Qwen3.5 chat template ends every assistant turn with. Checkpoints missing it do not stop at end-of-turn and overrun the context window, so their eval numbers are a floor, not a measurement — compare them only against other checkpoints with the same eos status, or re-package before evaluating.

Cell note: eos packaging defect across all checkpoints

Mapping back to the figures

The repo id is {cell}.h{HHH}.{family}.{step}, where hHHH is the hour of the 100-hour run at which this checkpoint was written — the same x-axis the sweep figures use for eval panels (t_h). So a checkpoint drops onto the performance-over-time curve directly, and sorting repo ids within a cell sorts them chronologically.

hHHH is rounded down to whole hours for sortability; the exact value is the hours into run row above, and in agentic-ptb/INDEX.