Excited to see GPT4-Turbo and longer sequence lengths from OpenAI. We just released Vectara's "Hallucination Evaluation Model" (aka HEM) today https://huggingface.co/vectara/hallucination_evaluation_mode... (along with this leaderboard: https://github.com/vectara/hallucination-leaderboard). GPT-4 was already in the lead. Looking forward to seeing GPT4-Turbo there soon.