Board Thread:Questions and Answers/@comment-8959286-20130927152419/@comment-3502824-20140120053746

So far, Ragna is pretty much confirmed to be an artificial human from the dialogues from CS.

Saya is hinted to be artificial human too since she is called a god's vessel, while Chronophantasma material collection shows a murakumo coffin with MURAKUMO No. 01 SAYA (few parts are covered by Jin).

So considering they all came from the same place, it is possible Jin is also an artificial human. However other than hints, there aren't much straight facts available right now.