A benchmark joke says Anthropic doing badly is the fastest way to lose trust in it

teortaxesTex · x · 2026-07-25

A joking post says the easiest way to undermine Lisan’s trust in any benchmark is to show Anthropic doing badly on it.

The attached screenshot shows a discussion around Opus 5 ECI: one user claims it should be around 163.5 based on public benchmarks, says Anthropic’s internal AECl is 162.1, and notes that it is higher than Mythos 5. The punchline is the complaint that public benchmarks should be harder because the current ones are too easy to game or over-interpret.

Related event: Anthropic's Benchmark Scores Spark Community Trust Crisis(2 posts)→

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