SpeechText.AI vs Book Detective (formerly What is that Books?)
Explore the showdown between SpeechText.AI vs Book Detective (formerly What is that Books?) and find out which AI Search Engine tool wins. We analyze upvotes, features, reviews, pricing, alternatives, and more.
In a face-off between SpeechText.AI and Book Detective (formerly What is that Books?), which one takes the crown?
When we contrast SpeechText.AI with Book Detective (formerly What is that Books?), both of which are exceptional AI-operated search engine tools, and place them side by side, we can spot several crucial similarities and divergences. The upvote count is neck and neck for both SpeechText.AI and Book Detective (formerly What is that Books?). Be a part of the decision-making process. Your vote could determine the winner.
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SpeechText.AI

What is SpeechText.AI?
SpeechText.AI turns uploaded audio and video files into editable text through a browser dashboard. You pick an industry domain and audio type before transcribing, which helps the engine handle specialized vocabulary in finance, healthcare, legal, HR, and other fields. The workflow covers upload, domain selection, automatic transcription, in-browser editing, and export to formats like TXT, PDF, DOCX, and SRT.
Most general transcription tools treat every recording the same. SpeechText.AI asks you to classify the source first, whether it is a podcast, interview, conference call, lecture, or meeting record, then routes the file through a model trained on similar audio. That domain and audio-type routing is the main reason to pick it over a one-size-fits-all converter, especially when jargon density matters.
Researchers, journalists, podcast producers, and legal teams use it when they need searchable transcripts with speaker labels and punctuation already applied. The service supports 50+ languages with regional variants, offers a speech-to-text API for developers, and stores data on GDPR-compliant servers hosted in France.
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.
SpeechText.AI Upvotes
Book Detective (formerly What is that Books?) Upvotes
SpeechText.AI Top Features
Choose industry domains like finance, healthcare, legal, or HR to improve recognition of specialized terms
Select audio types such as interviews, podcasts, conference calls, or lectures before transcribing
Supports 50+ languages with regional variants including English, German, French, Spanish, and Japanese
Speaker identification labels who said what in multi-participant recordings
Achieves a 3.8% word error rate on the LibriSpeech benchmark dataset
Export transcripts as TXT, PDF, DOCX, or SRT subtitle files from the dashboard
Pay-as-you-go credit packs from $10 for 180 minutes with no recurring monthly fee
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
SpeechText.AI Category
- Search Engine
Book Detective (formerly What is that Books?) Category
- Search Engine
SpeechText.AI Pricing Type
- Freemium
Book Detective (formerly What is that Books?) Pricing Type
- Free
