GLM-5.3 vs GPT-5.6 Sol on DeepSWE: cost, coding, routing
On 904 DeepSWE rollouts, GPT-5.6 Sol leads pass@1 72.7% vs GLM-5.3's 69.0%, but GLM-5.3 wins pass@4 (87.6% vs 85.8%) at half the cost ($3.99 vs $8.37 per rollout). A GLM-first cascade solves 85.9% of tasks at $6.61 each.
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