ReAct vs Plan-and-Execute: choosing an agent planning strategy

On November 12, 2026, at 11:17, an article titled "Agent Planning: ReAct or Plan-and-Execute" was published on Juejin, a Chinese developer community platform, addressing how developers should choose between two Agent task planning strategies. The piece frames the decision as a cost problem rather than a matter of style. With ReAct, the agent rereads its history at every step, so the longer the context grows, the more expensive the process becomes. Plan-and-Execute, by contrast, performs planning once and therefore spends fewer tokens, but it concentrates the main risk on the quality of the plan produced up front. To help developers pick between the two approaches, the article supplies a decision table built on six signals and a runnable dual-mode executor that can switch between the two planning modes. No further coverage has appeared since the post went live, so the topic currently rests at the stage of a single introductory walkthrough with practical selection guidance, without any subsequent developments reported by outside sources.