Report whether genai-prices is currently able to price a request.
Note that True also covers "not yet attempted", so callers must only
consult this after pricing has been tried -- otherwise a session that has
priced nothing reads as healthy.
Report whether genai-prices is currently able to price a request.
Note that True also covers "not yet attempted", so callers must only
consult this after pricing has been tried -- otherwise a session that has
priced nothing reads as healthy.