by Google · founded 2023 · updated Jul 2026
NotebookLM turns your own sources, docs, PDFs, videos, links, into a grounded research assistant that only answers from what you give it. Audio Overviews generate podcast-style discussions of your material; a uniquely trustworthy way to study a corpus.
Fixed weights, sources attached, the formula
Each score is built from the claims below. This is a snapshot, so check the current terms with the vendor before you commit to anything.
2 of 3 claims below are past their re-check window. Pricing, availability and security details move fast, so confirm those with the vendor.
| Claim | Source | Checked |
|---|---|---|
| Video Overviews and Interactive Mode (pause to ask questions) shipped alongside EPUB support and Gemini-app sync· re-check | Google Labs / NotebookLM updates | May 2026 |
| Tiered as Free / Plus $7.99 / Pro $19.99 / Ultra, with Ultra split into $99.99 and $200 SKUs at I/O 2026· re-check | Google I/O 2026 announcements | May 2026 |
| Audio Overviews available in 50+ languages; source-grounding cites exact passages for every answer | NotebookLM documentation | Apr 2026 |
NotebookLM's mid-2026 update shipped Video Overviews and an Interactive Mode that lets you pause an Audio Overview to ask questions, plus EPUB ingestion and two-way sync with the Gemini app. Pricing now spans Free / Plus $7.99 / Pro $19.99 / Ultra, with Ultra split into $99.99 and $200 SKUs.
Gemini 3.5 Pro headlines I/O 2026 with multimodal and reasoning gains, while 3.5 Flash becomes the default in the consumer app, sharpening Google's price-performance edge.
Google's grounded research assistant went global, and enterprises are adopting it for onboarding and knowledge-base digestion. Still no public API, watch this space.
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