[mrlkts]

That specific question is not great for this purpose. 4o model with web search enabled: "As of May 2025, there is no ISO 9002:2023 standard. The ISO 9002 standard was officially withdrawn in 2000 when the ISO 9000 family underwent significant restructuring. Since then, ISO 9001 has been the primary standard for quality management systems (QMS), encompassing the requirements previously covered by ISO 9002."

tl;dr: It knows

[virgilp]

Indeed the more advanced ones catch this particular one. I could trick phind with "Explain the IEEE 1588-2019 amendments 1588g and i impact on clock synchronization" (g exists, i does not but Phind hallucinates stuff about it). Perplexity catches it, though.

The recipe is the same, you just have to try several models if you want to get something that gets many engines to hallucinate. Of course nothing is _guaranteed_ to work.