Hallucination rates vary by benchmark, so don't trust vendor claims. Even with...

https://alexisqoem867.trexgame.net/the-illusion-of-provenance-dissecting-the-citation-failures-of-perplexity-and-copilot

Hallucination rates vary by benchmark, so don't trust vendor claims. Even with web search, the HalluHard test shows a 30.2% error rate. Stop relying on black-box scores