Submission timelines hint at long-horizon post-training: open models submit >10 hours late

nrehiew_ · x · 2026-09-03

Analyzing submission timelines on long-horizon tasks offers insight into how much long-horizon post-training models received: Sol and Fable submit relatively early, with Fable persisting much longer, while most open models — including GLM 5.3, Kimi K3 and Qwen 3.8 Max — submit extremely late (>10 hours), suggesting weaker time-budget awareness.

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