Sci-fi book I read in early/mid 2000’s, was told it helped inspire Halo

Not sure when the book was published and all I can remember is it was about an AI(or a bunch of AI’s) were in charge of a war, I think the one with the following quote was female. It’s all I can remember about the book, the Female Ai was saying the found a human that was like a penny being flipped a trillion times but always landing on heads. Sorry I don’t have more to go on, google was no help.

Thanks