Flint vs Preuve AI
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.
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AI tutor and activity builder for K-12 schools, free for up to 80 users
Cited 0-100 viability score for a startup idea, with a free first check and one-time pricing
- Free access
- Flint: Free access
- Preuve AI: Free access
- Paid from
- Flint: USD 3,000 per year
- Preuve AI: USD 59 one-time
- Plans listed
- Flint: 5
- Preuve AI: 7
- Public API
- Flint: Not confirmed
- Preuve AI: Not confirmed
Where Flint and Preuve AI differ
- PlansFlint lists 5 plans and Preuve AI lists 7.
Head to head
Each value from the tool’s profile and the vendor’s own pages
| Flint | Fact | Preuve AI |
|---|---|---|
| Access and price | ||
| Free access availableFree · USD 0 | Free accessSame | Free access availableReality Check |
| USD 3,000 per yearSmall pilot | Lowest listed paid plan | USD 59 one-timeFounder Report |
| Free up to 80 users; schools from $3,000/year | Pricing model | Free Reality Check (2 scans); Founder Report $59 one-time; Lifetime Pro $499 |
| 5 | Plans listedDiffers | 7 |
| Not confirmed | Public API | Not confirmed |
| Not confirmed | Card to start | Not confirmed |
| Not confirmed | Open source | Not confirmed |
| What it is for | ||
| K-12 schools piloting an AI tutor that teachers can monitor | Built for | Checking whether a startup idea has demand and room before building it |
| Research & sources | CategorySame | Research & sources |
| Platforms |
|
| Works with |
|
| How current | ||
| Profile sources checked | ||
| Prices confirmed · Oct 6, 2026 | Pricing checkSame | Prices confirmed · Oct 21, 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
Flint
Prices confirmed · Oct 6, 2026- FreeUSD 0
- Small pilotUSD 3,000 per year
- Smaller schoolUSD 4,000 per year
- Midsize schoolUSD 6,500 per year
- Large schoolCustom
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
Strengths and limits
Flint
Strengths
- Free pilot for a small group: The pricing page lists a free plan for up to 80 users, which covers a few classes.
- Teachers can see everything: Live sessions, transcripts, alerts and summaries are listed for teachers and administrators.
- Built on the teacher's own materials: Activities can draw on uploaded PDFs, slides and links, and the AI prioritises them, according to the FAQ.
Limits to plan around
- Sales-only above 80 users: Every paid tier says Contact sales; there is no self-serve checkout or published price for a single teacher.
- Free plan scope unclear: The page calls it free, the pilot FAQ calls it a free trial, and no time limit is stated.
- Free plan gets the faster model: Paid and trial schools get a more capable model than free-plan schools, according to the FAQ.
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.
See both products
Start from your task, not from a winner.
Run both tools on the same real task, then compare the result, how much editing it needs and how fast it uses your plan’s allowance.
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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.