If you have ever wondered what Google's Gemini would say about you and your book, you can finally find out. You can use it whether your book is out or on the way, indie or traditionally published, fiction or nonfiction. Other AIs have their own checkers.

Not knowing is the hard part, and nobody can tell from the outside. Gemini tends to know popular books in depth and lesser-known books thinly or not at all. Run the tool to see where you stand.

It is fair to wonder whether this deserves your attention. Google builds its AI Overviews, the summaries that can appear above regular search results, on a version of Gemini, and Gemini also ships with Android phones. A reader who describes the kind of book they want, without typing a title, gets books the AI already knows, so a book it has not learned is one it is less likely to mention. Thomas Umstattd Jr. explains the idea in the article linked above.

You may be hoping to see the exact answer a reader gets on Google, and this is a close look at something slightly different. A live AI Overview can search the web and may change from one search to the next, so treat what you see as Gemini's own memory of you, not a copy of what any one reader sees.

You have probably tried asking already, and wondered whether Gemini really knew your book or just looked it up. Gemini's own app and Google search can look things up, which can make it seem better informed than it is. Here you see what it knows on its own.

Seeing a wrong detail about your own book is unsettling, and it is not a glitch. When Gemini is not familiar with a book, it may fill the gaps with plausible guesses. In each wrong guess you can see where your online footprint is thin, so the sting turns into a plan. Check every detail against your own records, and do not repeat a wrong one anywhere as fact.

It stings to hear nothing, and it is useful information rather than bad news. A blank is common for newer books and midlist authors. You know where to focus: your Amazon page, your Goodreads profile, and your author website, the places Gemini is most likely to learn from next. With Book Page Scanner you can see what your book page is missing.

You cannot submit your book to Gemini or buy your way into Google's AI Overviews, but you can give it more to learn from. Strengthen your Amazon page, your Goodreads profile, and your author website, and earn reviews and mentions on other sites. With SEO/GEO Optimizer you can make any web page easier for search engines and AI to understand. Expect changes to take months to show up, because models update on a training cycle and not in real time.

Readers do not all ask the same AI, and different AIs know different things, so where their answers disagree is worth a look. You can ask the other major assistants too, with ChatGPT Knowledge Checker, Claude Knowledge Checker, Grok Knowledge Checker, DeepSeek Knowledge Checker, and Muse Knowledge Checker.

Yes, and checking a whole backlist can be eye-opening. Run the tool again with each title to see which books Gemini knows and which it has never heard of.

Waiting for AI to catch up with you is slow, and that is normal. It depends on when your book and its reviews were published relative to Gemini's training and how much has been written about it online. A model's general knowledge updates on a training cycle, not in real time, so expect any changes you make to your author platform to take months to show up.

Pre-launch nerves are normal, and you can use it, but expect little. Gemini cannot know a book that does not exist yet, so it will say so or guess. You walk into launch knowing your starting point and which pages to build first.

Yes, and you can ease the helpless feeling of not controlling your retail pages. If Gemini repeats an error about your book or your publisher, you can hand the details to your publisher's marketing team, who control your book's retail pages.

It can happen, especially with a common name, and it is a strange thing to read. Enter your name as it appears on your cover, and read the answer for books or details that belong to someone else. When you spot a mix-up, you know little online ties your name to your book, so make that link clear on your author website and book page.

Yes. Your argument and your credentials are what sell a nonfiction book, so it is worth knowing how Gemini describes both. A wrong description is worth fixing, because readers may take what Gemini says as fact.

Not always, and a surprising answer is not the final word. The model can word things differently or guess differently from one run to the next. If an answer surprises you, run it again, since details that change from run to run are likely guesses.

Yes. Author Media does not store, track, or view anything you post to this tool. The tools reach each AI through its business API with privacy set to the maximum, so the AI companies do not train on your words.

Gemini Knowledge Checker is included with any Novel Marketing Patreon membership of $10 per month or more. That membership also unlocks more than 80 other author tools in the Patron Toolbox. AI tool use draws from your membership's credit balance.