Gamma vs NotebookLM (2026): Now Gemini Notebook, and It Actually Makes Slides

Last updated: August 2026

This comparison needs an update most “Gamma vs NotebookLM” articles online don’t have yet. Google renamed NotebookLM to Gemini Notebook in July 2026, confirmed directly on Google’s own support site, and more importantly, it now has a real Slide Deck feature that generates actual presentations, not just the audio summaries and Q&A it was originally known for. This is no longer “a presentation tool vs. a note-taking tool.” It’s two different approaches to AI-generated slides: one built from a prompt, one built from your own source documents.

What Actually Changed (And Why Most Comparisons Are Out of Date)

Google rebranded NotebookLM to Gemini Notebook in July 2026, same product, new name, confirmed directly on Google’s own support site, which now redirects notebooklm-branded help articles to their gemininotebook equivalents. The bigger change is functional: Gemini Notebook can now generate a “Slide Deck” directly from the sources you’ve uploaded to a notebook, choosing between a Detailed Deck format or simpler TED-style presenter slides, with prompt-based revision that lets you delete, reorder, or regenerate individual slides without rebuilding the whole thing. You can present it directly in the app or download it as a PDF. As of this writing, this feature is limited to users 18 and older, confirmed on Google’s own help page, an unusual restriction worth knowing if you’re evaluating it for a classroom or under-18 context.

Several older comparison articles still describe NotebookLM as producing “summaries, Q&A, and audio only,” that description predates the Slide Deck feature and is now outdated. If you read a recent-looking article claiming NotebookLM can’t make slides at all, check its publish date, that claim is no longer accurate.

Source-Grounded vs. Prompt-Driven Generation

The real difference between these tools is the input, not just the output. Gamma starts from a prompt, a pasted outline, or a rough idea, and generates a complete deck with layout, images, and structure handled automatically. Gemini Notebook starts from documents, PDFs, or notes you’ve actually uploaded, and builds a deck grounded specifically in that material, which matters if factual accuracy tied to your own sources is the priority over creative flexibility.

Practically: if you’re starting from a blank page with just an idea, Gamma is the faster path. If you already have research, meeting notes, or a stack of PDFs and want a deck that reflects exactly what’s in them rather than what an AI imagines from a short prompt, Gemini Notebook’s source-grounded approach is the better fit.

Pricing and Free Tier Limits

Both tools have genuine free tiers, but the limits are structured completely differently, so a direct side-by-side credit comparison would be misleading. Gamma’s free tier gives you 400 one-time credits, enough for roughly 30-40 decks. Gemini Notebook’s free Standard tier, confirmed via Google’s own support pages, includes up to 50 sources per notebook and 100 notebooks total, with no separate cap specifically on Slide Deck generations mentioned in Google’s documentation as of this writing. Paid tiers scale differently too: Gamma’s paid plans are priced per deck-generation credits, while Gemini Notebook’s higher tiers (Plus, Pro, Ultra) are bundled inside broader Google AI subscription plans starting around $4.99/month, rather than sold as a standalone product.

Which One Should You Actually Use?

• Starting from a blank page with just an idea → Gamma. Prompt in, deck out.
• Already have source documents, research, or notes uploaded → Gemini Notebook builds directly from them.
• Need maximum design flexibility and fast manual editing → Gamma’s editor is built for this.
• Need the deck to stay strictly accurate to your own source material → Gemini Notebook’s source-grounded generation reduces drift from what you actually uploaded.
• Under 18, or presenting for a classroom with under-18 users → Gemini Notebook’s Slide Deck feature is currently 18+ only; Gamma has no such restriction.
• Want to test both without spending anything → Both have genuine free tiers with no credit card required.

Frequently Asked Questions

Is NotebookLM still called NotebookLM?

Google renamed it to Gemini Notebook in July 2026. It’s the same product and existing notebooks carry over, confirmed directly on Google’s own support site. The old name still gets searched heavily, which is why you’ll see both names used interchangeably for a while.

Can Gemini Notebook (NotebookLM) actually make slide presentations now?

Yes, as of its Slide Deck feature, confirmed on Google’s own help center. It generates a Detailed Deck or TED-style presenter slides directly from your uploaded sources, with prompt-based revision. This is a genuinely new capability; older reviews describing NotebookLM as audio/text-only predate it.

Is Gemini Notebook’s Slide Deck feature free?

Yes, it’s included in the free Standard tier alongside the rest of Gemini Notebook’s features, which allows up to 50 sources per notebook. Higher usage tiers are bundled into paid Google AI subscription plans rather than sold separately.

Which is better for turning research into a presentation, Gamma or Gemini Notebook?

Gemini Notebook, if the presentation needs to stay grounded in documents you’ve already uploaded, since that’s specifically what it’s built to do. Gamma is faster if you’re starting from a prompt or outline rather than a stack of existing source material.

Does Gemini Notebook’s Slide Deck feature have an age restriction?

Yes, as of this writing it’s limited to users 18 and older, confirmed directly on Google’s own help documentation. Gamma has no equivalent age restriction on its presentation generation.

Final Verdict

This comparison changed meaningfully in 2026, Gemini Notebook (formerly NotebookLM) is no longer just a research and audio tool competing indirectly with Gamma, it’s now a genuine source-grounded slide generator. The real choice isn’t “which is the better presentation tool” in the abstract, it’s whether you’re starting from a prompt (Gamma) or from documents you’ve already gathered (Gemini Notebook). For the full picture on Gamma specifically, see our full Gamma review and complete pricing breakdown. Considering other alternatives to Gemini Notebook too? See our NotebookLM alternatives roundup.

Try Gamma Free →

Tool pricing and features change frequently. Always check the official website for the latest information before signing up.

Sources

• Google, Generate a Slide Deck in Gemini Notebook, Gemini Notebook Help, retrieved 2026-08-05, https://support.google.com/gemininotebook/answer/16757456
• Google, Add or discover new sources for your notebook, retrieved 2026-08-05, https://support.google.com/notebooklm/answer/16215270
• Google Workspace Updates, New ways to customize and interact with your content in NotebookLM, March 2026, retrieved 2026-08-05, https://workspaceupdates.googleblog.com/2026/03/new-ways-to-customize-and-interact-with-your-content-in-NotebookLM.html