Cheng, Y., Huang, S., Song, X., Tan, J., Dong, G., Xie, P., Wen, J. R., & Dou, Z. (2026). When Should Agents Think? Adaptive Reasoning via Cross-Turn Estimation. https://omanscience.com/en/articles/when-should-agents-think-adaptive-reasoning-via-cross-turn-estimation