on ARC-AGI-3, retained reasoning and context compaction raised GPT-5.6 Sol's score from 13.3% to 38.3% while reducing output tokens sixfold
EP.99 故事线C: Harness 设计本身就能将性能从 13.3% 提升到 38.3%,同时减少 6 倍的输出 tokens——这意味着「如何运行模型」和「运行什么模型」同样重要。这是对 AI Agent 工程的深刻洞察:推理框架的设计空间远未被充分探索。