Pick NotebookLM (Gemini Notebook) if…
you're studying or researching a fixed set of documents and want answers that stay inside them, plus audio summaries to listen to.
NotebookLM, renamed Gemini Notebook in July 2026, only answers from the sources you upload. That makes it a study and research tool, not a general chatbot. ChatGPT answers from its own model knowledge and also accepts file uploads. The two overlap when you ask questions about your own documents, and that's the job this page compares.
Pick NotebookLM if you want answers and Audio Overviews drawn strictly from your own documents. The free plan is generous, and more comes bundled with Google AI plans from $4.99/mo. Pick ChatGPT (Plus at $20/mo) if you also need writing, images, Deep Research or coding beyond your files.
| App | Free tier | Paid from | Top plan | Best for |
|---|---|---|---|---|
| NotebookLM (Gemini Notebook) | Yes | $4.99/mo | $99.99–199.99/mo | Students, researchers, and analysts who need grounded answers and audio summaries from their own documents |
| ChatGPT | Yes | $8/mo | $500/mo | Everyday writing, brainstorming, image generation, casual coding |
Monthly prices in US dollars before tax, from each vendor's official pricing (US list price; weekly-billed plans converted to a monthly figure). Updated November 2, 2026
| NotebookLM (Gemini Notebook) | ChatGPT | |
|---|---|---|
| Where answers come from | Only the sources you upload | The model's own knowledge, plus files you add |
| Free tier | 100 notebooks, 50 sources each; 50 queries & 3 Audio Overviews/day | GPT-6 Luna, unlimited text chats, file uploads |
| How you pay for more | Only inside a Google AI plan, from $4.99/mo | Go at $8/mo or Plus at $20/mo |
| Standout feature | Audio Overviews of your documents | Deep Research, custom GPTs, Codex on Plus |
| Top plan | Google AI Ultra: up to 5,000 queries/day, cloud code-execution | Pro 500 ($500/mo): 25× Plus usage |
you're studying or researching a fixed set of documents and want answers that stay inside them, plus audio summaries to listen to.
you want one assistant for everything, including drafting, images and code, and only sometimes work from your own files.
For working through your own course material, usually yes. NotebookLM answers only from the sources you upload and can turn them into Audio Overviews. ChatGPT is broader but isn't limited to your documents.
Yes. The free plan allows 100 notebooks of 50 sources each, 50 chat queries a day and 3 Audio Overviews a day. Higher limits aren't sold separately; they come with Google AI Plus, Pro or Ultra.
It's NotebookLM's new name since July 2026. The product is the same, and many people still search for it as NotebookLM.
How we choose: prices come from each vendor's official pricing page and are re-checked every week. We take no affiliate fees, so rankings aren't for sale.