Comment Comment by ofermend Can't wait to try Opus 4.5We just evaluated it for Vectara's grounded hallucination leaderboard: it scores at 10.9% hallucination rate, better than Gemini-3, GPT-5.1-high or Grok-4.https://github.com/vectara/hallucination-leaderboard parent ofermend 11 months ago
We just evaluated it for Vectara's grounded hallucination leaderboard: it scores at 10.9% hallucination rate, better than Gemini-3, GPT-5.1-high or Grok-4.
https://github.com/vectara/hallucination-leaderboard