ChatGPT vs NotebookLM
A detailed side-by-side comparison to help you choose the right AI productivity agent for your needs.
Best overall AI assistant for general tasks
ChatGPT
ChatGPT by OpenAI holds the #1 position on the a16z Top 100 Gen AI Apps list for both web and mobile, making it the most widely used AI application in the world. As a general-purpose AI assistant, Cha...
AI Models
GPT-5.4GPT-5o3o4-miniDALL-E 3
Key Features
- Versatile AI assistant for writing, coding, analysis, and research
- DALL-E 3 integration for image generation within conversations
- Web browsing for real-time information access
- Python code execution for data analysis and visualization
- Custom GPTs for specialized workflows and personas
Pricing
Free — $0/month
Go — $8/month
Plus — $20/month
Pro — $200/month
Team — $25/user/month
Pros
- Number 1 ranked AI app globally with the largest user base and ecosystem
- Unmatched versatility across writing, coding, analysis, and creative tasks
- Custom GPTs and plugins create a rich third-party ecosystem
Cons
- Free tier has significant usage limits during peak hours
- Pro tier at $200/month is expensive for individual users
Best for AI-powered research and note-taking
NotebookLM
NotebookLM is Google's AI research and note-taking tool ranked #13 on the a16z Top 100 Gen AI Apps list, offering a unique approach to knowledge synthesis. Users upload source documents—PDFs, Google D...
AI Models
Gemini 2.5 ProCustom audio generation models
Key Features
- Source-grounded AI that only references uploaded materials
- Audio Overview generates podcast-style discussions from sources
- Inline citations for every AI-generated claim
- Support for PDFs, Docs, websites, YouTube, and audio uploads
- Up to 50 sources per notebook with 500K words each
Pricing
Free — $0/month
NotebookLM Plus — $19.99/month
Pros
- Source-grounded approach eliminates AI hallucination concerns
- Audio Overview podcast generation is genuinely innovative and useful
- Free tier provides substantial functionality for research
Cons
- Limited to uploaded sources—cannot access broader web knowledge
- Audio Overview generation can take several minutes for large sources