How much compute costs is it for the AI to do Brenda's job? Not total AI spend, but the fraction that replaced Brenda. That's why they'd fire a human but keep using the AI.
(More seriously, she also has 20+ years of institutional knowledge about how the company works, none of which has ever been captured anywhere else.)
I'd like to see the cost of a model where the model provider (Anthropic etc) can assume that kind of financial and legal accountability.
To the extent that this output is possible only when Anthropic is not held to the same standard as Brenda, we will need to conclude that the cost savings accrue due to the reduced liability standards than on the technical capabilities of the model