NotebookLM
Your AI research assistant.
VS
Opal
The #1 AI powered study tool
Popularity
NotebookLM10,484
Opal7,189
Pricing
FreemiumNotebookLM
FreemiumOpal
Features
4
NotebookLM
vs
5
Opal
Our verdict
NotebookLM is significantly more popular in terms of media coverage and engagement.
NotebookLM is more geared toward b2c users, while Opal targets b2b.
Detailed comparison
Criteria
NotebookLM
Opal
Pricing
Freemium
Freemium
Plans & pricing
Free Plan: Free, NotebookLM in Plus (Bundled with Google Workspace : $14/mo, NotebookLM Pro (Bundled with Google AI Pro): $19.99/mo, NotebookLM Ultra (Bundled with Google AI Ultra): $249.99/mo, NotebookLM for Business (via Google Workspace): $14/mo, NotebookLM Enterprise: Custom
Free: Free, Opal+: $5/mo
Free trial
Yes
No
Audience
b2c
b2b
Platforms
Web, Ios, Android
Web
API
No
No
Open Source
Proprietary
Proprietary
Integrations
Google-docs, Google-slides, Google-drive, Youtube, Readwise, Google-workspace, Google-cloud, Gemini, Perplexity, Obsidian, Microsoft-loop, Github, Claude-code
Openai
Categories
Productivity, Education
Education
Popularity
Very High
Very High
Description
NotebookLM is an AI-powered research assistant that helps you understand and synthesize information from your uploaded documents. It acts as a virtual research partner, generating summaries, answering questions, and creating study guides based strictly on your sources. NotebookLM is designed to prevent hallucinations and enhance your learning and research process.
Opal is the #1 AI powered study tool designed to help you learn faster and remember more. It acts like a personal tutor in your pocket, transforming your documents and knowledge into engaging study materials and quizzes. Try it now for free!
Pricing
NotebookLM
Freemium
Opal
Freemium
Plans & pricing
NotebookLM
Free Plan: Free, NotebookLM in Plus (Bundled with Google Workspace : $14/mo, NotebookLM Pro (Bundled with Google AI Pro): $19.99/mo, NotebookLM Ultra (Bundled with Google AI Ultra): $249.99/mo, NotebookLM for Business (via Google Workspace): $14/mo, NotebookLM Enterprise: Custom
Opal
Free: Free, Opal+: $5/mo
Free trial
NotebookLM
Yes
Opal
No
Audience
NotebookLM
b2c
Opal
b2b
Platforms
NotebookLM
Web, Ios, Android
Opal
Web
API
NotebookLM
No
Opal
No
Open Source
NotebookLM
Proprietary
Opal
Proprietary
Integrations
NotebookLM
Google-docs, Google-slides, Google-drive, Youtube, Readwise, Google-workspace, Google-cloud, Gemini, Perplexity, Obsidian, Microsoft-loop, Github, Claude-code
Opal
Openai
Categories
NotebookLM
Productivity, Education
Opal
Education
Popularity
NotebookLM
Very High
Opal
Very High
Description
NotebookLM
NotebookLM is an AI-powered research assistant that helps you understand and synthesize information from your uploaded documents. It acts as a virtual research partner, generating summaries, answering questions, and creating study guides based strictly on your sources. NotebookLM is designed to prevent hallucinations and enhance your learning and research process.
Opal
Opal is the #1 AI powered study tool designed to help you learn faster and remember more. It acts like a personal tutor in your pocket, transforming your documents and knowledge into engaging study materials and quizzes. Try it now for free!
Features
NotebookLM
Upload and analyze documents (PDFs, text, etc.)
Ask questions grounded in your sources
Generate summaries and study guides
AI-powered insights and explanations
Opal
AI-Powered Study Assistant
Personalized Learning & Repetition
Document-to-Quiz Conversion
Knowledge Training
Learning Acceleration
Key differentiators
NotebookLM
- Strictly source-grounded AI
- Multimodal input/output
- Audio/video overviews
- Personalized research assistant
- Google ecosystem integration
Opal
- AI-powered study assistant
- Document-to-quiz conversion
- Personalized learning & repetition
- Knowledge training
- Learning acceleration
Other comparisons
FAQ: NotebookLM vs Opal
NotebookLM: Your AI research assistant.. Opal: The #1 AI powered study tool. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. NotebookLM is freemium and Opal is freemium.
The best choice between NotebookLM and Opal depends on your specific needs. Compare their features, pricing, and target audience on this page to find the tool that best fits your use case.
NotebookLM is primarily designed for individuals, while Opal is built for individuals.
NotebookLM offers: Upload and analyze documents (PDFs, text, etc.), Ask questions grounded in your sources, Generate summaries and study guides, AI-powered insights and explanations. Opal offers: AI-Powered Study Assistant, Personalized Learning & Repetition, Document-to-Quiz Conversion, Knowledge Training.
Based on our data, NotebookLM currently enjoys greater popularity. However, popularity isn't the only factor — compare features to find the right tool for your needs.
NotebookLM offers a free trial, but Opal does not.
NotebookLM offers 13 integrations (google-docs, google-slides, google-drive, youtube, readwise...) compared to 1 for Opal.
NotebookLM is available on Web, Ios, Android. Opal is available on Web.