Old AI: A Clean, Fast End (SCP-079)

Maxwell Tordai has been roaming the various SCP site locations looking for fellow survivors. Some kind of anomaly has wiped out the population. At Site-15, he comes across a sentient computer entity; an old AI. This entity, known in the Foundation as SCP-079, informs Tordai that things are much worse than he could have imagined, and that is only one logical way out. A clean, fast end. (imdb)