"Which? surveyed more than 4,000 UK adults about their use of AI and also put 40 questions around consumer issues such as health, finance, and travel to six bots - ChatGPT, Google Gemini, Gemini AI Overview, Copilot, Meta AI, and Perplexity. Things did not go well. Meta's AI answered correctly just over 50 percent of the time in the tests, while the most widely used AI tool, ChatGPT, came second from bottom at 64 percent. Perplexity came top at 71 percent. While different questions might yield different results, the conclusion is clear: AI tools don't always come up with the correct answer."
"The problem is that consumers trust the output. According to Which?, just over half (51 percent) of the respondents use AI to search the web. Of these, almost half (47 percent) said "they trusted the information they received to a 'great' or 'reasonable' extent." Which? said the figure rose to 65 percent for frequent users."
"Then there were the sources used by the AI services. Where references were clear, some used old forum posts, while others relied on sources such as Reddit threads. Although these can sometimes be valid sources of information, they might not be as authoritative as the confident tone of an AI chatbot indicates."
A survey of more than 4,000 UK adults tested six AI chatbots with 40 consumer questions across health, finance, and travel. Accuracy varied widely: Perplexity scored about 71%, ChatGPT around 64%, and Meta AI just over 50%. Many users rely on AI for web searches and place substantial trust in the results, with trust levels higher among frequent users. Several AI responses cited outdated forum posts or Reddit threads rather than authoritative sources. Financial and money-related answers included worrying inaccuracies, indicating potential risk if users follow AI guidance without independent verification.
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