Which? Which?

Can AI replace financial advice?

Jul 30, 2026 · 33m

Summary

Which? tested five major AI chatbots on 15 personal finance questions, evaluating their accuracy, clarity, and reliability against expert standards. While the tools performed well on straightforward queries, they struggled with current data, often hallucinating facts or providing US-centric advice irrelevant to UK consumers. The investigation highlights that AI should supplement, not replace, traditional research, urging users to verify sources and be mindful of the technology's environmental and societal impacts.

Topics discussed

Introduction: The rise of AI chatbots in personal finance Methodology: Testing 5 AI tools against 15 financial questions Strengths: Summarizing straightforward financial information Tailored advice: How AIs handle personal data and follow-ups Best practices: Crafting effective prompts and verifying sources Weaknesses: Hallucinations, outdated data, and 'cheating' answers Case study: Travel insurance errors and unreliable sourcing Comparison: AI chatbots vs. traditional search engines Results: Accuracy scores and performance rankings of the bots Broader impact: Environmental costs and job displacement concerns Regulation: FCA oversight and industry responses to findings
Listen ad-free on Castria