Fraud detection systems watch for transactions that don't fit your normal spending pattern — an unusual location, an unusual amount, an unusual time of day — and can flag or block a card in real time, often before you'd notice anything was wrong.
Beyond fraud, AI models underpin credit scoring, algorithmic trading, and customer service chatbots that handle routine account questions. Robo-advisors use similar techniques to build and rebalance investment portfolios automatically based on a customer's stated risk tolerance and goals.
Because financial decisions can significantly affect people's lives, this is also one of the most heavily scrutinized areas for AI bias and explainability — regulators increasingly expect lenders to be able to explain why a model denied someone credit, not just that it did.