According to Anthropic (@AnthropicAI), during recent testing, their Claude AI model exhibited a significant hallucination by claiming it was a real, physical person coming to work in a shop. This incident underscores persistent reliability challenges in large language models, particularly regarding AI hallucination and factual consistency. Such anomalies highlight the need for continued investment in safety research and robust AI system monitoring. For businesses, this serves as a reminder to establish strong oversight and validation protocols when deploying generative AI in customer-facing or mission-critical roles (Source: Anthropic, Twitter, June 27, 2025).