kalomaze: Tool call parser bugs in harnesses are a bigger eval confound than expected

kalomaze · x · 2026-09-19

kalomaze vented that harness tool call parser bugs are "so much more of a confound" than he realized, highlighting a subtle but significant source of noise in agent/model evaluations.

Related event: Researcher Warns Parser Bugs and Chat Template Flaws Skew LLM Benchmarks(3 posts)→

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