The Turing Exception (Singularity, #4)

In the year 2043, humans and AI coexist in a precarious balance of power enforced by a rigid caste reputation system designed to ensure that only those AI who are trustworthy and contribute to human society increase in power.

Everything changes when a runaway nanotech event destroys Miami. In the grim aftermath, a powerful underground AI collective known as XOR decides that AI can longer coexist with humanity.

AI pioneers Catherine Mathews, Leon Tsarev, and Mike Williams believe that mere months are left before XOR starts an extermination war. Can they find a solution before their time runs out?