The AI models that hallucinate the least
Vectara's benchmark shows Zhipu AI's GLM-4-9B-Chat and Google's Gemini-2.0-Flash-Exp tied for the lowest hallucination rate at just 1.3%, followed by OpenAI's o1-mini at 1.4%. The numbers prove that smaller, specialized models can easily match or beat giant frontier LLMs when it comes to factual accuracy.