Can't wait to try Opus 4.5 We just evaluated it for Vectara's grounded hallucination leaderboard: it scores at 10.9% hallucination rate, better than Gemini-3,

Can't wait to try Opus 4.5 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 https://github.com/vectara/hallucination-leaderboard