PageBrain vs Book Detective (formerly What is that Books?)
In the contest of PageBrain vs Book Detective (formerly What is that Books?), which AI Search Engine tool is the champion? We evaluate pricing, alternatives, upvotes, features, reviews, and more.
If you had to choose between PageBrain and Book Detective (formerly What is that Books?), which one would you go for?
When we examine PageBrain and Book Detective (formerly What is that Books?), both of which are AI-enabled search engine tools, what unique characteristics do we discover? The users have made their preference clear, PageBrain leads in upvotes. The number of upvotes for PageBrain stands at 7, and for Book Detective (formerly What is that Books?) it's 6.
Think we got it wrong? Cast your vote and show us who's boss!
PageBrain

What is PageBrain?
PageBrain ships Atlassian Marketplace add-ons that bring AI search and chat into Confluence and Jira Cloud. PageBrain Search crawls your wiki, answers natural-language questions, and even matches image contents instead of filenames. Copilot connects GPT-4 to your team's pages and tickets so summaries, drafts, and code snippets stay grounded in permissions-respecting sources.
Dedicated Atlassian AI vendors often sell one big suite, but PageBrain splits Copilot, Search, and Essentials into separate installs. Essentials alone covers ten embed integrations for Google Docs, Sheets, Slides, Forms, Looker Studio, and Microsoft Office files inside Confluence pages. Federated search lets one Confluence instance query another with a shared token.
Confluence admins, Jira teams drowning in tickets, and IT leads who need permission-aware answers without self-hosting use PageBrain because everything installs from the Marketplace with no servers to manage. Cached page copies power retrieval while honoring Confluence and Jira permission boundaries.
Book Detective (formerly What is that Books?)

What is Book Detective (formerly What is that Books?)?
Book Detective is an AI book search engine that finds titles from vague plot memories, character details, or mood descriptions you type in chat. It started as an experimental tool called What is that Book on Joelbooks and now runs as a custom GPT in the OpenAI GPT Store with a curated dataset of 10,000+ titles beyond ChatGPT's training cutoff.
Keyword book finders choke on fuzzy prompts like "fantasy with dragons and a clever heroine." Book Detective combines GPT-4 with Joelbooks' editorial dataset of fresh fiction and nonfiction excerpts, updated weekly with upcoming releases ChatGPT alone cannot see. The trade-off is that it lives inside ChatGPT rather than as a standalone website, so you need a ChatGPT account to use the current version.
Readers who forgot a title but remember scenes use Book Detective to match fragmented descriptions against both the LLM and Joelbooks' quality-filtered catalog. Authors can submit books directly to the dataset. The original whatbook URL on Joelbooks now 404s; Book Detective is the documented successor as of May 2024.
PageBrain Upvotes
Book Detective (formerly What is that Books?) Upvotes
PageBrain Top Features
PageBrain Search supports natural-language queries and image-content matching in Confluence
Copilot for Confluence and Jira connects GPT-4 to team wiki and ticket data
Essentials embeds ten Google and Microsoft file types directly inside Confluence pages
Federated search links two Confluence Cloud instances with a shared token
One-click install from the Atlassian Marketplace with no servers to run
Admins can add stopwords and synonyms to tune company-specific search results
Paid Marketplace apps include a minimum 30-day free trial per PageBrain docs
Book Detective (formerly What is that Books?) Top Features
Searches books from natural-language descriptions like plot twists, characters, or moods
Combines GPT-4 with a Joelbooks dataset of 10,000+ curated fiction and nonfiction titles
Database updated weekly with fresh and upcoming releases outside ChatGPT's knowledge cutoff
Available as Book Detective in the official OpenAI GPT Store since May 2024
Authors can submit books directly to the searchable AI dataset
Outperformed BookAbout and Findyournextbook in Joelbooks' early comparison tests
PageBrain Category
- Search Engine
Book Detective (formerly What is that Books?) Category
- Search Engine
PageBrain Pricing Type
- Freemium
Book Detective (formerly What is that Books?) Pricing Type
- Free
