Microsoft's SIRIS benchmark: frontier LLMs struggle to judge when simulator flaws invalidate designs
_akhaliq · x · 2026-11-11
SIRIS, a benchmark from Microsoft Research and collaborators, tests whether LLMs can tell when a simulator's limitations invalidate its recommended system design. By perturbing a simulator to build workload pairs, it evaluates 19 frontier LLMs on LLM serving design problems. Findings: identifying a limitation doesn't ensure correct design choices, even top models sometimes abandon valid recommendations, and review-based self-correction restores some choices while introducing new errors.
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