GLM-5.3 vs. GLM-5.3 Flash on DeepSWE: Cost, Coding, and Routing

An analysis comparing GLM-5.3 and its distilled sibling GLM-5.3 Flash on the DeepSWE benchmark, finding that the Flash variant retains 94% of solved tasks at one-seventeenth the cost but loses reliability rather than capability, with a cascade strategy solving 80.9% of tasks at $1.70 each.