Artificial intelligence on the other hand is considered a tech-heresy by the Mechanicus and severely censured. Only those logic engines approved by ('blessed by the Deus Mechanicus') the Mechanicus are allowed to exist, and those are jealously guarded – and monitored. There may be good reasons for such a doctrine; according to ancient legends from the Dark Age of Technology thinking machines once rebelled against their human masters and came close to destroying humanity. It is one of the holy tasks of the Adeptus Mechanicus (and also the Inquisition) to seek out and destroy rogue machine intelligences.

For tasks requiring low-level artificial intelligence servitors are used. These are mind-scrubbed human drones (often heavily mechanically augmented) that have been programmed for a specific task or set of tasks. Some servitors are former criminals scented to mind-scrubbing, but the vast majority are vat-grown bioroids created in Mechanicus manufactories. A bewildering array of such servitors exists, ranging form pleasure-models and household servants, via gun-servitors manning automated defense turrets, to the high-grade C3 servitors employed on Navy warships.

Whatever their origin and appearance servitors are not considered human; they are machines, biological computers given human shape, but nothing more. Some high-end models might even mimic human emotion and intelligence, but there are strict limits to how human-like they are allowed to be. The Mechanicus and the Inquisition closely watches bioroid manufactories for sings of illegal activities.

Fully mechanical robots are sometimes utilized by the Mechanicus as war-machines, but these are invaluably low-intelligence constructs completely loyal to their masters, and capable of very little creative though and possessing little in the way of independent motivation.