For two years, CEOs argued about AI in the abstract. This week the most sophisticated, most heavily regulated enterprises on earth put audited numbers on it in their Q2 earnings. JPMorgan's Jamie Dimon says AI has cut jobs by 30 to 40 percent in discrete units across roughly 1,000 use cases; Citi says nearly nine in ten of its people now use its AI tools; Bank of America's assistant Erica handled 200 million customer interactions in a single quarter. AI at scale is real — but Dimon's tell is the story: the gains "accrue to the customer, not to JPMorgan," because every competitor is doing the same thing.

Meanwhile Morgan Stanley says the AI capex cycle is only 10 to 15 percent complete, even as IBM lost a quarter of its value in a day and investors just named AI spending the market's single biggest risk. Stephen Forte on why AI is becoming t ...