Nathan Lambert on Artificial Analysis v5 and the benchmarker's dilemma

natolambert · x · 2026-10-28

Nathan Lambert publishes an Interconnects piece defending both the Artificial Analysis v5 index and open models, reviewing the benchmarking industry.

Core argument: benchmarking is messier, more opinionated, and trickier than most appreciate — "hill-climbing is easy; knowing what to hill-climb is hard." We have a clear playbook for raising scores, but no methodology yet for creating meaningful benchmarks at the true frontier. Independent evaluation is under-appreciated for its difficulty. (Full text is paywalled.)

Related event: Nathan Lambert on the Benchmarker's Dilemma and Open Model Rankings(4 posts)→

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