AI hallucination—the generation of inaccurate or fabricated information by...

https://wiki-wire.win/index.php/Practical_Guide:_Running_Claude_Sonnet_4.6_Safely_When_Accuracy_Is_40%25_and_Hallucination_38%25

AI hallucination—the generation of inaccurate or fabricated information by language models—remains a stubborn challenge despite rapid model improvements