New Study Identifies 53 Slopsquatting Targets Across 5 Frontier LLMs

A new independent research preprint examining nearly 200,000 code-generation responses found that five frontier large language models continue to invent package names that do not exist on PyPI or npm. The models’ overall package-hallucination rates were much closer than those measured in earlier research, ranging from 4.62% to 6.10%. The study also identified package names generated by every model in the test group. The initial analysis found 127 names shared across Claude Sonnet 4.6, Claude…