a) They are pulling it entirely rather than imposing a cap or enforcing the use of cheaper models. This would be a strange choice if cost was the only concern.
b) Famously, traders at Goldman are well renumerated. Given the costs of these people even small productivity improvements carry a large value.
c) It would be very difficult to determine in any kind of conclusive way that the benefits were smaller than the costs.
For all these reasons I find it totally implausible that this decision was driven by API costs.
Technically yes, but in practice:
a) They are pulling it entirely rather than imposing a cap or enforcing the use of cheaper models. This would be a strange choice if cost was the only concern.
b) Famously, traders at Goldman are well renumerated. Given the costs of these people even small productivity improvements carry a large value.
c) It would be very difficult to determine in any kind of conclusive way that the benefits were smaller than the costs.
For all these reasons I find it totally implausible that this decision was driven by API costs.