The Vectara hallucination leaderboard integrates Claude Sonnet 4 (claude-sonnet-4-20250514), Claude Opus 4 (claude-opus-4-20250514), Claude Opus 4.1 (claude-opus-4-1-20250805), Claude Sonnet 4.5 (claude-sonnet-4-5-20250929), and Claude Haiku 4.5 (claude-haiku-4-5-20251001).

Authors

• Person: Not available Organization: Vectara
  vectara/hallucination-leaderboard - GitHub

Sources

• vectara/hallucination-leaderboard - GitHub github.com Vectara via serper

Referenced by nodes (1)

• Vectara entity