GLM-5.3 Matches Claude Fable 5 On DeepSWE Coding Benchmark At One-Fifth Cost
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We analyzed GLM-5.3 and Claude Fable 5 on DeepSWE. GLM-5.3 MATCHED Fable 5 on single-shot solve rate at about one-fifth the cost, then pulled ahead with multiple attempts. The economics get interesting fast when retries are cheap 馃憞
GLM-5.3 vs Fable 5 breakdown of DeepSWE performance. Coding quality parity with 1/4th the cost is a sweet deal! > GLM-5.3 at 69.0% vs. 69.7% > $3.99/task vs $21/task > 80k tokens vs 114k tokens > 124 turns vs 85
Four tries with GLM-5.3 beat Fable 5 on both solve rate and total cost. On DeepSWE, GLM-5.3 reaches 87.6% for ~$16, compared with 69.7% at $21.63 for Fable 5.
Give GLM-5.3 and Fable 5 the same $100 budget, and GLM-5.3 gets over 5x as much work done. On DeepSWE, that works out to about 17 solved tasks with GLM-5.3 vs. 3 with Fable 5, even though they perform almost the same on the first try.