Key Takeaways JPMorgan, Citigroup, BAC, WFC and PNC are embedding AI to boost productivity across core banking functions.JPM's AI productivity impact rose from 3% to 6%, while C freed up 100K developer hours per week.BAC is spending $4B on AI, while WFC and PNC eye headcount shifts tied to automation.Artificial intelligence (AI) is the biggest technological disruption since the Internet, reshaping how we work, create and make decisions. The biggest U.S. banks, JPMorgan (JPM) , Citigroup (C) , Bank of Americ ...