Perplexity
Answer engine that cites its sources, useful for researching facts and figures for a deck.
Logo: official trademark, served by us
Google's research notebook (formerly NotebookLM) that answers questions about your own sources.
Unpaid listing. The link is marked rel="nofollow".
DPA, privacy policy, sub-processor list, legal notice and pricing page read and recorded below, each with its source.
How this was researched: AI-assisted. An AI assistant retrieved the vendor’s pages and linked every answer to the source where it appears. Where a page couldn’t be read, it says “unclear” – not a guess. An editorial spot check is still pending; please report errors via the correction form.
Not tested hands-on yet, so there is no rating. The full review adds that.
| DPA available? | yes · Cloud Data Processing Addendum for Workspace customers |
|---|---|
| Is your content used for training by default? | no · Workspace and personal accounts: not used for training (except feedback you submit). |
| Data location disclosed? | no · Per the admin help, Workspace data regions do not apply to data processed and cached by Gemini Notebook |
| Independently certified (ISO 27001, SOC 2)? | yes · Gemini Notebook (Workspace) is in scope of ISO 27001/27017/27018 and SOC 1/2/3 |
8 of 8 privacy questions answered with evidence in Google Cloud EMEA Limited’s documents, as of Oct 6, 2026.
| Capability | Status | Source |
|---|---|---|
| PPTX file export | yes – Free plan and up Slide Decks download as .pptx; editability not stated by Google (third party Codia, May 2026: some text rasterized, charts flat images); revision quotas; over-18 only | Vendor help center ↗ checked Oct 16, 2026 Editability of PPTX unverified |
| Generates slides inside Google Slides | not documented not documented | – |
| Direct export to Google Slides | not documented Google Slides export not mentioned in help article or March 2026 update | Vendor help center ↗ checked Oct 16, 2026 Not an explicit 'cannot' |
| Google Slides via PPTX import | not documented not documented | – |
| PDF export | yes – Free plan and up Download PDF Document (.pdf) | Vendor help center ↗ checked Oct 16, 2026 |
| Builds from an uploaded document | yes – Free plan and up (pdf, docx, pptx, txt, md, csv, epub, url, youtube, google-docs, google-slides, google-sheets, images, audio) decks generated from notebook sources; files: pdf, docx, txt, md, csv, pptx, epub, images, audio; Google Docs/Slides (≤100 slides)/Sheets; web and YouTube URLs; up to 500k words or 200 MB per source; Free up to 50 sources | Vendor help center ↗ checked Oct 16, 2026 |
"Not documented" means we found no statement either way – not that the tool can’t do it. Whether an export stays fully editable is part of the hands-on review.
| Category | Writing & Research |
|---|---|
| Domain | notebooklm.google.com visit ↗ |
| Pricing model | Free plan + paid plans |
| Starting paid plan | Google AI Plus: USD 4.99 per month, month-to-month · Vendor page ↗, checked Oct 16, 2026 – Annual billing not shown; billing cycle assumed monthly from '/month' |
| Cheapest plan with PowerPoint output | Free: free · Vendor page ↗, checked Oct 16, 2026 – Quota limits apply |
| Headquarters | United States |
| Often used for | building decks from documents |
| Server location | Global (multiple regions) |
| Vendor | Google Cloud EMEA Limited |
| More in this category | 7 tools |
| In the directory since | Sep 19, 2026 |
| Documents reviewed on | Oct 6, 2026 |
Not checked yet: rating from our test brief. How we review
Not rated yet – ratings come from the hands-on test brief.
| Question | Answer | Evidence |
|---|---|---|
| Data processing agreement (DPA) available | yes Cloud Data Processing Addendum for Workspace customers; Gemini Notebook (formerly NotebookLM, renamed Jul 16, 2026) is a Core Service, incl. from Business Starter up. Not for personal Google accounts. | Source Oct 6, 2026 |
| Server location disclosed | no Per the admin help, Workspace data regions do not apply to data processed and cached by Gemini Notebook; no EU option. DPA: processing possible worldwide. | Source Oct 6, 2026 |
| Sub-processors listed publicly | yes Public Workspace sub-processor list (third parties and Google group companies with location), last modified Jul 23, 2026. | Source Oct 6, 2026 |
| Training on customer data: default and opt-out, by plan | not used – every plan Workspace and personal accounts: not used for training (except feedback you submit). | Source Oct 6, 2026 |
| EU representative appointed (Art. 27 GDPR) | no No Art. 27 EU representative needed: the contracting party for Workspace in Germany, Austria and Switzerland is Google Cloud EMEA Limited, Dublin (EEA). | Source Oct 6, 2026 |
| Standard Contractual Clauses (SCCs) for transfers outside the EU | yes CDPA incorporates EU SCCs (controller-to-processor, processor-to-processor, among others) for transfers to third countries. | Source Oct 6, 2026 |
| Deletion periods documented | yes Workspace: customer data deleted within max. 180 days after contract end (CDPA Sec. 6.2). No period found for personal accounts. | Source Oct 6, 2026 |
| Independent certification (ISO 27001, SOC 2) | yes Gemini Notebook (Workspace) is in scope of ISO 27001/27017/27018 and SOC 1/2/3; the admin help additionally lists ISO 27701 and BSI C5:2020. | Source Oct 6, 2026 |
“Unclear” means we didn’t find the information in the public documents – not that the vendor doesn’t meet it. The check is a documented snapshot of the vendor’s public commitments. It is not a certification and not legal advice – see the disclaimer.
These tools also have all eight privacy answers with sources – a solid basis for a comparison.
Answer engine that cites its sources, useful for researching facts and figures for a deck.
AI features in the Notion workspace for drafting, summarizing and searching team knowledge.
Writing assistant for English, widely used in companies.
Machine translation from Germany, including document translation for PPTX files.
Style and grammar editing for English, German and other languages.
Marketing content platform with brand voice and campaign workflows.
Paraphrasing, grammar checking and summarizing.
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