Translated data: WikiChat is an AI chatbot designed to eliminate the "hallucinations" of large language models (LLMs) by retrieving data from Wikipedia. It ensures accurate responses through information retrieval using ColBERT and a seven-stage process, achieving a factual accuracy rate of 97.9% when conversing with human users, which is a 55% improvement over GPT-4. Employing a mixed human and LLM evaluation method, it has achieved a factual accuracy rate of 97.3% in simulated dialogues. WikiChat effectively addresses the issue of hallucinations in large language models, providing more reliable and accurate information.