Llama 2 (and variants). Has the lowest hallucination rate (https://github.com/vectara/hallucination-leaderboard https://github.com/vectara/hallucination-leaderb

Llama 2 (and variants). Has the lowest hallucination rate (https://github.com/vectara/hallucination-leaderboard https://github.com/vectara/hallucination-leaderboard), and its open source and so we know what went into it, and the community can improve it