Undermind vs Flint
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
Deep literature search that reports its own coverage
AI tutor and activity builder for K-12 schools, free for up to 80 users
- Free access
- Undermind: Free access
- Flint: Free access
- Paid from
- Undermind: USD 75 per month
- Flint: USD 3,000 per year
- Plans listed
- Undermind: 6
- Flint: 5
- Public API
- Undermind: Not confirmed
- Flint: Not confirmed
Where Undermind and Flint differ
- PlansUndermind lists 6 plans and Flint lists 5.
Head to head
Each value from the tool’s profile and the vendor’s own pages
| Undermind | Fact | Flint |
|---|---|---|
| Access and price | ||
| Free access availableFree · USD 0 | Free accessSame | Free access availableFree · USD 0 |
| USD 75 per monthPro (Industry) · or $60 per month billed annually | Lowest listed paid plan | USD 3,000 per yearSmall pilot |
| Free plan; Pro from $16 a month billed annually | Pricing model | Free up to 80 users; schools from $3,000/year |
| 6 | Plans listedDiffers | 5 |
| Not confirmed | Public API | Not confirmed |
| Not confirmed | Card to start | Not confirmed |
| Not confirmed | Open source | Not confirmed |
| What it is for | ||
| Finding hard-to-locate papers on a specific research question | Built for | K-12 schools piloting an AI tutor that teachers can monitor |
| Research & sources | CategorySame | Research & sources |
| Platforms |
|
| Works with |
|
| How current | ||
| Profile sources checked | ||
| Prices confirmed · Oct 11, 2026 | Pricing checkSame | Prices confirmed · Oct 6, 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
Undermind
Prices confirmed · Oct 11, 2026- FreeUSD 0
- Pro (Academic)USD 20 per monthor $16 per month billed annually
- Pro (Industry)USD 75 per monthor $60 per month billed annually
- Team (Academic)USD 18.70 per person per monthor $15 per person per month billed annually
- Team (Industry)USD 75 per person per monthor $60 per person per month billed annually
Show 1 more plan
- EnterpriseCustom
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
Strengths and limits
Undermind
Strengths
- Free plan with agent access: The pricing section lists agent connections and shared workspaces at $0, with abstracts and metadata searched.
- Coverage is reported: The provider says the report summary states when a search has probably not found everything, so you can extend it.
- Full-text search on Pro: The FAQ says Pro adds search of the full texts of nearly all open-access and preprint papers.
Limits to plan around
- Unnumbered limits: Free has standard rate limits and Pro 10x higher limits, but no page gives the base numbers.
- Single source database: Search draws on Semantic Scholar; the FAQ says a specific paper may not be in it.
- No refunds: The refund policy calls charges non-refundable once a billing period has begun, except where required by law.
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.
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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Comparing tools from different categories is fine, and often useful — a writing assistant and a research tool solve different halves of the same job. The table will show you exactly where they diverge.
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.