Google answered some of our questions about its fancy new AI chip

On Thursday, we asked Google about its new custom-made chip for artificial intelligence called a Tensor Processing Unit, or TPU. Google politely declined to answer Recode's questions, saying only that "more information is coming later." Later in the day, after we posted our questions, Google changed its mind and gave us some short answers to a few -- but not all -- of our questions, via an email from a spokesperson. This is a big one that Google did not answer. It probably is pre-trained, but we don't know for sure.