NotebookLM

Freemium

Google’s AI research assistant grounded in your sources

★ 4.6/5▲ 1,123 upvotesLast updated: 2026-07-06

What is NotebookLM?

NotebookLM answers questions using only the sources you upload — papers, docs, links, videos — with citations back to the exact passage, and famously turns them into podcast-style Audio Overviews with two AI hosts. Students, analysts and writers use it as a grounded second brain that barely hallucinates because it sticks to your material. Free with generous limits.

Key Features

✦Source-grounded answers with citations
✦Audio Overviews (AI podcast)
✦Multi-source notebooks
✦Study guides and briefings

Pros

✓Minimal hallucination by design
✓Audio Overviews are magical
✓Free and generous

Cons

✗Only knows your sources
✗Notebook organization basic

Use Cases

Study from readings
Research synthesis
Meeting prep from docs
Podcast-style summaries

Frequently Asked Questions

Is NotebookLM free in 2026?

NotebookLM offers a free plan; paid plans start at Included with Google One AI.

What is NotebookLM used for?

Google’s AI research assistant grounded in your sources. Main use cases: Study from readings, Research synthesis, Meeting prep from docs, Podcast-style summaries.

What are the best NotebookLM alternatives?

The most popular alternatives to NotebookLM are Perplexity, Claude, SciSpace.

Does NotebookLM have an API?

No, NotebookLM does not currently offer a public API.