AgentPTB sweep checkpoint. Cell sol-high — Codex / gpt-5.6-sol @ effort high.

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: best cell in the sweep

Join on plot cell above. The sweep figures are keyed by these same cell names.

generation_config.json now sets eos_token_id to [248044, 248046], so generation stops on both <|endoftext|> and the chat-format <|im_end|> token. Model weights are unchanged.