NotebookLM was renamed Gemini Notebook in July 2026, and it can't be bought on its own: higher limits come only with a Google AI Plus, Pro or Ultra subscription. The free plan caps you at 50 chat queries and 3 Audio Overviews a day.
Claude Pro ($20/mo) is the best alternative for long documents, with projects to organize them. Perplexity is better when you need web sources with citations. Teams whose documents live in Notion should look at Notion AI on the Business plan.
| 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 |
| Claude | Yes | $20/mo | $100–200/mo | Document analysis, research papers, nuanced writing, software engineering |
| ChatGPT | Yes | $8/mo | $500/mo | Everyday writing, brainstorming, image generation, casual coding |
| Perplexity | Yes | $20/mo | $200/mo | Research with verifiable sources, fact-checking, exploring unfamiliar topics |
| Notion AI | Yes | $10/mo | $20/mo | Teams already living in Notion who want AI search, meeting notes, and agents built into the same workspace |
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
Claude is built for document analysis and research papers. Pro includes unlimited projects to organize chats and documents, Research access and extended thinking.
Pick it if: you want careful analysis and writing from long sources, not just summaries.
Where it falls short: Usage varies by conversation length and model on a rolling 5-hour limit, so long sources use more of it.
Full Claude pricing →ChatGPT Plus ($20/mo) handles file uploads, memory and projects, plus 10 Deep Research runs a month for going beyond your own sources.
Pick it if: you want document Q&A in the same app you use for writing and everything else.
Where it falls short: It isn't restricted to your sources, so check which answers come from your files.
Full ChatGPT pricing →Perplexity answers with citations to actual sources. Free includes unlimited Quick searches; Pro ($20/mo) adds 300+ Pro searches a day and unlimited file uploads.
Pick it if: your research starts on the web rather than in documents you already have.
Where it falls short: Less suited to open-ended writing from your notes.
Full Perplexity pricing →On the Business plan ($20/mo per user), Notion AI adds an agent, meeting notes and enterprise search across your workspace's docs and wikis.
Pick it if: your team's documents already live in Notion.
Where it falls short: Free and Plus only get a capped AI trial; full Notion AI needs Business.
Full Notion AI pricing →NotebookLM's defining feature is that it only answers from the sources you upload. Claude and ChatGPT read your files too, but they also draw on general knowledge, which helps with explanation and drafting but makes it harder to tell what came from your documents. If grounding matters, ask for quotes or page references; if the web is your source, Perplexity's citations do that job.
Yes. Gemini Notebook, formerly NotebookLM, has a free plan with 100 notebooks of 50 sources each, 50 chat queries and 3 Audio Overviews a day. Higher limits come with Google AI Plus ($4.99/mo) and above.
NotebookLM is better for working through documents you already have. Perplexity is better for finding and citing new sources on the web.
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.