Vectara, a Generative AI (GenAI) platform, has released its open-source Hallucination Evaluation Model, a first-of-its-kind initiative to provide a commercially available and open-source model that addresses the accuracy and level of hallucination in large language models. The model is designed to quantify how much an LLM strays from facts while synthesizing a summary related to previously provided reference materials. The launch includes releasing Vectara’s measurement code base as an open-source model on Hugging Face as well as a publicly accessible Leaderboard available from Vectara.