  The progressive advent of artificial intelligence machines may represent both
an opportunity or a threat. In order to have an idea of what is coming we
propose a model that simulate a Human-AI ecosystem. In particular we consider
systems where agents present biases, peer-to-peer interactions and also three
body interactions that are crucial and describe two humans interacting with an
artificial agent and two artificial intelligence agents interacting with a
human. We focus our analysis by exploring how the relative fraction of
artificial intelligence agents affect that ecosystem. We find evidence that for
suitable values of the interaction parameters, arbitrarily small changes in
such percentage may trigger dramatic changes for the system that can be either
in one of the two polarised states or in an undecided state.
