Commonwealth Bank of Australia is using artificial intelligence to resolve 15,000 payment disputes lodged by its customers every day – more than its call centres can handle – and says it has half a dozen other ways it can use the technology to cut costs and provide better service.

The country’s largest bank, and its chief executive Matt Comyn, outlined a vision for AI to staff and the public at a lengthy briefing on Thursday, suggesting there were at least another 50 uses that would be kept private.