Terminal-Bench 4.0 Released: Opus 5 Leads, GLM 5.3 Best Open Source

himanshustwts · x · 2026-08-29

Terminal-Bench 4.0 is officially released, featuring 66 tasks across domains including science, software, ML, operations, security, hardware, and media. Benchmark results show that Opus 5 outperforms Fable 5. GLM 5.3 is highlighted as the best open-source model, performing very close to Fable 5.

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