First Book AI vs Merlin AI

Comparing the features of First Book AI to Merlin AI

Feature
First Book AI
Merlin AI

Capability Features

AI Book Agent
AI Content Detector
AI Model Support
ChatGPTGPT 4ClaudeDeepseek V3OpusLlamaMistralGeminio3o4-miniGPT 4.1Claude 3.7 SonnetDeepSeek R1Gemini 2.5 ProGemini 2.5 FlashMistral LargeLlama 3.1 405BGrok 3
Automatic Video Timestamps
Book Credits Additive
Book Structure
8 chapters, 24–32 sections
Chrome Extension Keyboard Shortcut
Ctrl/⌘+M
Citations Support
Code Generation and Editing
Content Ownership
Custom Chatbots
Custom Prompt Support
Diagram and Chart Generation
DiagramsInteractive chartsInfographicsFlowchartsMindmaps20+ infographic types
Early Access to New Models
Edit Content
Featured Image Generation
20+ image models and aspect ratios
File Uploads
PDFXLSCSV
Full-Length Book Generation
GDPR Compliant
Geo Availability
200+ countries
Guided Book Creation
Humanize AI Content
ISO 27001 Certification
Knowledge Base Creation
Multiple Infographic Types
20
Multiple Platform Sync
No Separate AI Accounts Needed
No Training on User Data
One-Click Summaries
Priority Support Team
Publish on Amazon KDP
Query Count Display
Quick Access
Real-time Web Search
Repurpose Content
WebsitesDocumentsYouTube videos
Roadmap Features
Additional languagesIn-text references & citationsReal-time collaborationAdvanced analytics
Section Editing
Setup Call Included
SOC 2 Type II Certified
Social Media Content Generation
LinkedInX (Twitter)Gmail
Step-by-step Guidance
Step-by-Step Questionnaire
Summarize Content
VideosArticlesPDFWebsitesBlogsDocuments
Support Response Time Team
Within one business day
Supported Languages List
25
Team Use
Unlimited Queries on Pro
Write Emails

Integration Features

Browser Integration
Twitter (X)LinkedInYouTubeGmail
EPUB/MOBI Workflow
Export Format
Microsoft Word (.docx)Google DocsPDF (print-ready)
Export to DOCX
Export to PDF
Google Docs Export
Supported Devices
Web appChrome extensioniOS appAndroid app
Supported Search Engines
GoogleBaiduBingDuckDuckGoYahooYandex

Limitation Features

Current Languages
English only (as of now)
Manuscript Length Target
≈30k–35k words
No API Access
No Plugin Support
No Query Count for Google Search Responses
Plagiarism Responsibility
User responsibility
Query Consumption by Model
GPT 4, Gemini 1.5, Mistral large: 30 queries per use; GPT 3.5, Gemini, Claude 3 Haiku: 1 query per use

Other Features

App Ratings
4.8 Chrome Store4.3 AppSumo4.3 Play Store4.7 App Store

Pricing Features

1 Book Plan
$19 one-time
10 Books Plan
$129 one-time
3 Books Plan
$47 one-time
30-Day Money Back Guarantee
50 Books Plan
$449 one-time
Book Credit Bundles
1 Book – $193 Books – $4710 Books – $12950 Books – $449
Free Daily Queries
102
Free Tier
No Monthly Fees
No Subscription
One Time Payment
Premium Plan Price
$19/month billed annually
Refund Policy Duration
14-day money-back guarantee
Team Plan