Bottom line: it's crap. Some spoilers below.
From an intriguing prologue, the story quickly reveals a shallow plot with two-dimensional characters who are given to reciting long compilations of facts clearly drawn from an overactive use of Google Search. Not exactly the techno-thriller or hard sci-fi I was hoping for. In fact, Seeker reads more like a graphic novel (aka comic book, complete with graphic violence), rather than a serious sci-fi story.
After an over-the-top bloodbath right out of the gate (delivered for shock value), the story descends into a thinly veiled Captain America theme. The cast of supporting characters consists mainly of throw-aways -- ISIS bad guys and a few other stick figures -- who are introduced Google-style in one paragraph, and then either ignored or killed off a couple of pages later. Many of these competitors in the race to gain control of Seeker are supposedly high-tech commandoes from other countries, but their supposed enhancements came off as as either boringly predictable or highly implausible (invisible Israelis, for example), as opposed to exciting and thought provoking.
As the two dubiously AI-enhanced protagonists fight their highly implausible battle in the Amazon jungle against a not-so-smart (but supposedly superintelligent) AI from another galaxy, the highly debatable theme of the 'technological singularity' is uncritically and unconvincingly hammered home ad nauseum. Very weak arguments on the science behind any technological singularity, whether human and alien. These arguments are mostly delivered via dialogues with Seeker and they run for pages, while the main characters sit around in the jungle, unbelievably pontificating on "Life, The Universe, and Everything" in the midst of their life and death struggle. While enduring these endless dialogues with Seeker, I was reminded of Lucius in the Incredibles talking about Baron Von Ruthless:, "He starts monologuing! He starts like this prepared speech about how feeble I am compared to him. How inevitable my defeat is, how the world will soon be his! Yada, yada, yada." In short, the whole AI pitch was not very imaginative, not very plausible, and ultimately came off like an adolescent fantasy.
I hung on to the end of the book, hoping Seeker would deliver a twist or something finally original to salvage my slog through the sophomoric plot, but it was not to be. Instead the obligatory love match between the protagonists is tacked on at the end -- and with zero chemistry having developed between the two during the story, I didn't even bother to read it; skimming it was all I needed.
I'd classify this book somewhat at the same level as Ready Player One, but without the originality, suspense, cleverness, or sense of fun delivered in that story. Frankly I was glad for it to end. If this is a best seller, it does not bode well for the future of humanity in our galaxy.