Re-evaluation of five frontier LLMs finds package hallucination rates compressed to 4.62-6.10% with 127 shared hallucinated names across all models, plus inverted Python-JavaScript asymmetry.
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The Range Shrinks, the Threat Remains: Re-evaluating LLM Package Hallucinations on the 2026 Frontier-Model Cohort
Re-evaluation of five frontier LLMs finds package hallucination rates compressed to 4.62-6.10% with 127 shared hallucinated names across all models, plus inverted Python-JavaScript asymmetry.