Together AI: GLM-5.3 Flash trails by 5.6 points at 17x lower cost

Together AI ran 900 DeepSWE rollouts comparing GLM-5.3 and GLM-5.3 Flash. Flash trails by 5.6 points at pass@1 but only 2.6 at pass@4, at 17x lower cost ($0.24 vs $3.99 per rollout). A cascade using Flash first solves 80.9% of tasks at $1.70 each.