What's the most meaningful KPI for AI customer support?
I've noticed that different teams seem to judge AI customer support systems in completely different ways.
Some care about deflection rate. Others look at average handling time, first response time, CSAT, first contact resolution, or simply how much support costs have come down.
The problem is that improving one metric doesn't always mean the overall experience is better. An assistant might deflect more tickets, but if people keep reopening them or immediately ask for a human, that number doesn't say much on its own.
If you could only track one or two KPIs to judge whether an AI support system was actually doing its job, what would you choose?
I'd be interested to know whether your answer changes depending on the type of support team or industry.