I interrogated Claude further (full conversation), and it claims that it’s using a system which attaches citations to its statements, rather than inserting them manually. This seems corroborated by the fact that when I asked it to try writing them manually, all the citations went to places which directly related to the paragraphs they were attached to. Consequently, I think this is not Sonnet 4.5 hallucinating, but rather an issue with some intervening layer.
I interrogated Claude further (full conversation), and it claims that it’s using a system which attaches citations to its statements, rather than inserting them manually. This seems corroborated by the fact that when I asked it to try writing them manually, all the citations went to places which directly related to the paragraphs they were attached to. Consequently, I think this is not Sonnet 4.5 hallucinating, but rather an issue with some intervening layer.