Currently, it appears like gl_translate attempts to send everything in one call, and failing that, makes one call per vector element. In my use case, that results in 20,000 calls of 100 characters each, all with their own status message ... not ideal, and probably slower than a few larger calls.
Would it make sense to instead attempt to split the request into (e.g.) 2, then 4, then 8 buckets? Id' be happy to propose an alternative to the current line Reduce(rbind, lapply(t_string, gl_translate, format = format, target = target, source = source, model = model)) if something like that would seem useful?