Study: LLM Hallucination Tendencies Do Not Reliably Correlate With Model Size

kevin_klyman · x · 2026-08-06

A cited study reveals that an evaluated LLM's tendency to exhibit hallucination does not reliably correlate with its model size, release date, or the presence of test-time reasoning.

Within model families, the effects of scaling are uneven and can sometimes even reverse the trend.

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