https://www.theguardian.com/technology/2023/feb/09/googles-bard-demo-what-went-wrong-chatgpt-chatbots-ai

Alphabet’s shares plummeted after Bard gave incorrect answer in a demo

Google’s unveiling of a rival to ChatGPT had an expensively embarrassing stumble on Wednesday when it emerged that promotional material showed the chatbot giving an incorrect response to a question.