Preuve AI vs Gemini Notebook
Plans, free access, limits and intended use side by side, taken from each vendor’s own pages. No score and no winner: the facts show where the two differ.
Change tools
Cited 0-100 viability score for a startup idea, with a free first check and one-time pricing
Cited answers and study material from your own sources.
- Free access
- Preuve AI: Free access
- Gemini Notebook: Free access
- Paid from
- Preuve AI: USD 59 one-time
- Gemini Notebook: USD 4.99 per month
- Plans listed
- Preuve AI: 7
- Gemini Notebook: 5
- Public API
- Preuve AI: Not confirmed
- Gemini Notebook: Yes
Where Preuve AI and Gemini Notebook differ
- Pricing checkPrices confirmed for Preuve AI; pricing review due for Gemini Notebook.
- PlansPreuve AI lists 7 plans and Gemini Notebook lists 5.
Head to head
Each value from the tool’s profile and the vendor’s own pages
| Preuve AI | Fact | Gemini Notebook |
|---|---|---|
| Access and price | ||
| Free access availableReality Check | Free accessSame | Free access availableStandard |
| USD 59 one-timeFounder Report | Lowest listed paid plan | USD 4.99 per monthGoogle AI Plus · Germany: EUR 4.99 |
| Free Reality Check (2 scans); Founder Report $59 one-time; Lifetime Pro $499 | Pricing model | Free; Google AI plans from USD 4.99/month |
| 7 | Plans listedDiffers | 5 |
| Not confirmed | Public API | Yes |
| Not confirmed | Card to start | Not confirmed |
| Not confirmed | Open source | No |
| What it is for | ||
| Checking whether a startup idea has demand and room before building it | Built for | Cited answers from your own documents |
| Research & sources | CategorySame | Research & sources |
| Platforms |
|
| Works with | Not listed |
| How current | ||
| Profile sources checked | ||
| Prices confirmed · Oct 21, 2026 | Pricing checkDiffers | Pricing review due · Sep 24, 2026 |
Official source check for both tools. No hands-on testing and no score: “Differs” marks a documented difference, not a better tool.
Plans and prices
Preuve AI
Prices confirmed · Oct 21, 2026- Reality CheckFree
- Founder ReportUSD 59 one-time
- 2-Report PackUSD 89 one-time
- 5-Report PackUSD 199 one-time
- Investor-Ready PackageUSD 499 one-time
Show 2 more plans
- Lifetime ProUSD 499 one-time
- Lifetime BusinessUSD 999 one-time
Gemini Notebook
Pricing review due · Sep 24, 2026- StandardFreewith a Google account
- Google AI PlusUSD 4.99 per monthGermany: EUR 4.99
- Google AI ProUSD 19.99 per monthGermany: EUR 21.99
- Google AI UltraUSD 99.99 per month, 5x tier with 20 TB storage20x tier with 30 TB: USD 199.99 per month; Germany: EUR 99.99 / EUR 219.99
- Workspace or Google CloudCustom pricing through your organizationno separate Notebook price
Strengths and limits
Preuve AI
Strengths
- One-time pricing: Founder products are single payments with no subscription, and Sentinel does not renew or charge after three months.
- Claims link to sources: The vendor says sourced claims link back to their source and estimates are labelled as estimates.
- Free first check: The Reality Check gives a score, market size and two competitor previews for 2 scans with no payment.
Limits to plan around
- Score method is closed: Factor weights, thresholds and agent prompts are unpublished, and the vendor says the score is a snapshot, not a guarantee.
- Narrow free tier: The free check is limited to 2 scans, each viewable for 7 days, with 2 competitor previews and no pivots.
- Narrow refund: The 14-day guarantee is a rerun first, once per customer, and not after Build with AI or an export; Lifetime plans and the Investor Package are excluded.
Gemini Notebook
Strengths
- Multiple source formats: Bring PDFs, websites, YouTube videos, audio files, Google Docs and Slides into a research notebook.
- Cited answers: Source-grounded answers include citations that let you inspect the underlying material.
- Ongoing Standard access: A free Standard tier is available without a paid subscription, subject to usage limits.
Limits to plan around
- Source allowance: Standard notebooks stop at 50 sources; bigger collections must be split across notebooks or moved to a paid plan.
- Variable AI usage: Long chats, complex prompts and heavy Studio features use more of the compute quota, so the number of actions per day varies.
- Region-limited paid tiers: Google AI Plus, Pro and Ultra are sold only in specific regions, and Ultra is limited to users over 18.
See both products
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Questions about comparing tools
How does the comparison work?
Add two tools to the comparison tray from any tool card, then open this page. The table pulls each tool's verified plan details, platforms, strengths and limits from its profile, so both columns carry the same kind of evidence, with a separate source-check date for each tool.
Do you declare a winner?
No. The table sets two tools against each other on documented facts, not on a score. Which one wins depends on your task, your budget and your usage volume — three things we cannot see from here.
Why are some cells empty or marked unverified?
Because we could not confirm that detail on the vendor's own pages. Rather than filling the gap with a figure from elsewhere, we mark it and say why on the tool's profile.
Can I compare more than two tools?
Not at once. Two columns keep the differences readable and force a real decision. Remove either selected tool to replace it, or clear both to start a new pair.
Every figure in the table above comes from the linked profile, where the source and the verification date are listed. Browse all tools or read the editorial policy.