We ran 904 DeepSWE rollouts on GLM-5.3 and Claude Fable 5. A tie on pass@1, but GLM-5.3 wins pass@4 and costs 5.4x less: $3.99 per rollout vs. $21.63.
GLM-5.3 vs. Claude Fable 5 on DeepSWE: Cost, Coding, and Routing
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August 21, 2026
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together-ai