Which AI detectors are free for nonprofits or education? The 12 cards that sell an institutional programme, the one university platform that charges nothing, and the two nonprofit tools that closed
None of the 72 AI detectors in the index states a free or discounted programme for nonprofits or education by name, by the plans, free tier and ownership fields of every card read 10 November 2026 in the data file. Twelve cards sell an institution, school or education tier, and eleven of the twelve price it by quote or contact: Turnitin's AI writing detection "is only available to customers that license Turnitin Originality" (guides.turnitin.com, read 8 November 2026), Compilatio's Magister+ is sold to institutions by demo and quote (compilatio.net, read 9 November 2026), Copyleaks lists "Education and Enterprise" as custom (copyleaks.com, read 8 November 2026), and GPTKit's "Unlimited (Institution)" plan is the one with a displayed price, $20 a month or $144 a year (gptkit.ai, read 9 November 2026). One platform is free because a university runs it: DeepFake-O-Meter, from the University at Buffalo's Media Forensics Lab, gives an account 30 uploads a day at no price (zinc.cse.buffalo.edu, read 10 November 2026). Two free tools provided by nonprofits, AI Writing Check and Check For AI, closed in 2023.
"Free for education" has two readings and this page keeps them apart. The first table lists the cards whose plans field names a programme for institutions, schools, universities or education, with the price as displayed, which for eleven of the twelve is a quote; a district reading this table is reading the vendor's sales route, not a discount. The second lists the cards whose free tier or ownership field says a nonprofit or a university provides the tool at no charge, with its status on the read date, because two of those tools no longer exist. Individual plans named for students are a third thing and sit on the student plan question. This page is one of the questions answered from the index; the school districts view reads the same institutional cards for a K-12 buyer, the institution-only view lists the cards a person cannot buy at all, and the AI detector register carries every card.
| Detector | Programme as named | As stated on the page | Price as displayed | Source | Read date |
|---|---|---|---|---|---|
| Turnitin | Turnitin Originality licence | "AI writing detection is only available to customers that license Turnitin Originality (or the AI writing add-on for iThenticate 2.0)"; the institution enables the feature | Not published | guides.turnitin.com | 8 November 2026 |
| Turnitin Clarity | Add-on to Turnitin Feedback Studio | "licensed separately at an additional cost to new and existing Turnitin Feedback Studio customers"; pricing by account manager or the sales form | Not published | guides.turnitin.com | 9 November 2026 |
| Compilatio | Compilatio Magister+ (institutions) | AI detection, semantic and cross-language plagiarism detection, altered text detection, priority processing; "Magister Standard excludes AI detection" | Price by demo request | compilatio.net | 9 November 2026 |
| Copyleaks | Education and Enterprise | "Custom" | Custom | copyleaks.com | 8 November 2026 |
| Grammarly Authorship | Enterprise and Grammarly for Education | Contact sales; education admins see aggregated Authorship analytics (text typed, copied from a website, AI-generated, top 10 external sources); K-12 admins must ask their Customer Success Manager to turn Authorship on | Not shown | grammarly.com | 9 November 2026 |
| Trinka | Enterprise and Institution | DocuMark, LMS and SSO integration (Canvas, Moodle, Blackboard, D2L and more) for institutions; AI Content Detector API priced on request | Custom pricing | trinka.ai | 10 November 2026 |
| Paperpal | Essentials Pack (Universities and Corporates) | "Institution-wide pricing on request"; the packages data lists "AI_DETECTION 10000 per MONTH" and "PLAGIARISM 7000 per MONTH" on the corporate-essential package; team discounts of 10% to 25% for 2 to 10 Prime annual seats | Contact us | paperpal.com | 10 November 2026 |
| PlagiarismCheck | Organizations: Advanced; Organizations: Pro | Institutional web account; LMS integration with Google Classroom, Moodle and Canvas; institutional archive; Pro adds any other LMS, closed depositories and Fingerprint authorship verification | Request quote | plagiarismcheck.org | 9 November 2026 |
| GPTKit | Unlimited (Institution) | Unlimited credits; up to 20 team members; 25 requests a minute; 153,600 characters a request; API access | $20 a month, or $144 a year ($206 struck through) | gptkit.ai | 9 November 2026 |
| AIDetectPlus | Enterprise | "Custom pricing for schools, colleges and large teams": bulk AI detection and humanization, API access, AI detection reports, volume discounts, dedicated account manager | Custom | aidetectplus.com | 9 November 2026 |
| Passed.ai | Institutional | "Everything in the individual subscription, quantity discounts, flexible trials; contact us" (pricing page archived 17 April 2026); registration closed on 10 November 2026 | "Flexible, Let's chat" | web.archive.org | 10 November 2026 |
| Codequiry | Class-based plans with instructor seats | Free: "unlimited peer similarity checks within a class, no card needed", AI detection excluded; Grow adds AI code detection with 1 instructor seat; Advanced 2 seats and LMS integrations; Defense 20 seats and custom LMS and SIS integrations | Grow US$200 a month base (C$272 as displayed to a reader in Canada) | codequiry.com | 9 November 2026 |
Programmes as the plans and free tier fields of each card name them from the page linked, read on the date shown; the index has not requested a quote from any of the twelve.
Which AI detectors sell to schools and universities by quote?
Eleven of the twelve, and the quote is the price. Turnitin and Turnitin Clarity publish no figure on any page read; the Originality licence that carries the AI indicator is enabled by the institution, which can also ask for a full deletion of its submissions but not a partial one (guides.turnitin.com, read 8 November 2026). Compilatio's Magister+ is the only Compilatio product that carries the detector for teachers, by demo request; the vendor's student product, Studium, is sold by credit pack from EUR 4.99 (compilatio.net, compilatio.net/en/product/studium/, read 9 November 2026). Grammarly Authorship is the one programme in the table whose education route changes what the product does: education admins get aggregated Authorship analytics in the admin panel, and K-12 admins must ask a Customer Success Manager to turn the feature on at all (grammarly.com, read 9 November 2026). Paperpal's packages data, which the pricing page renders by script, lists "AI_DETECTION 10000 per MONTH" on the corporate-essential package that universities are offered, with no unit stated (paperpal.com, read 10 November 2026), the one inclusion figure in the table that is not a seat count. Codequiry's plans are built around a class rather than a campus: peer similarity within a class is free, and AI code detection starts on Grow at a US$200 a month base with 1 instructor seat, rising to 20 seats on Defense (codequiry.com, read 9 November 2026). The LMS coverage ranking counts the platforms each card names, which is where an institutional programme is used rather than bought.
GPTKit's Unlimited (Institution) plan at $20 a month, or $144 a year, is the one institutional tier with a displayed price, and the name describes a team size, up to 20 members with API access, rather than an eligibility rule (gptkit.ai, read 9 November 2026).
Which AI detectors does a nonprofit or university give away?
One live platform and two closed tools. DeepFake-O-Meter is an open research platform of the University at Buffalo's Media Forensics Lab, supported by National Science Foundation grant SaTC-2153112; its model groups endpoint gives a regular user 30 uploads a day with 15 days of record keeping and an advanced user 100, with no price published for any tier, and its about text says the methods are "intended solely for academic and individual use and are not consumer products" (zinc.cse.buffalo.edu, ubmdfl.cse.buffalo.edu, read 10 November 2026). AI Writing Check was "a free service provided by the nonprofit organizations" Quill.org, the 501(c)3 Empirical Resolution Inc., and CommonLit, "powered by donations", taking 100 to 400 words a check; its live page reads "August 2023 Update - AI Writing Check is no longer available" (web.archive.org, capture of 17 July 2023; aiwritingcheck.org, read 10 November 2026). Check For AI described itself as "a free nonprofit project for individuals" on its home page captured 27 May 2023 and announced its sunset in a banner from 3 June 2023 (web.archive.org, read 10 November 2026). Both closures are recorded on the shut-down detectors question.
Cards whose free tier or ownership field names a nonprofit or university provider, or a nonprofit audience
| Detector | Provider or audience as stated | Free access as stated | Status on 10 November 2026 | Source | Read date |
|---|---|---|---|---|---|
| Deepfake-O-Meter | University at Buffalo Media Forensics Lab; NSF grant SaTC-2153112; the platform paper describes "nonprofit services" | Free with an account: 30 uploads a day and 15 days of record keeping for a regular user, 100 a day for an advanced user; no price for any tier | Live | zinc.cse.buffalo.edu | 10 November 2026 |
| AI Writing Check | Quill.org (Empirical Resolution Inc., a 501(c)3 nonprofit) and CommonLit | "A free service provided by the nonprofit organizations"; "powered by donations"; 100 to 400 words a check; no account | Taken down in August 2023 | web.archive.org | 10 November 2026 |
| Check For AI | Uphold.ai; "a free nonprofit project for individuals" | Free with an account; no allowance figure published | Sunset in 2023; host not answering on 10 November 2026 | web.archive.org | 10 November 2026 |
| Pindrop Pulse | Pulse Inspect launched "for media, nonprofits, governments and social media networks" | None stated: upload and batch API in Preview since 15 August 2024; no price published | Live, by demo | pindrop.com | 9 November 2026 |
| FakeCatcher | Intel's newsroom names "nonprofit organizations" among potential users | None: no sign-up, trial, price or access form on intel.com | No route to the platform | intel.com | 10 November 2026 |
Statements as the free tier and ownership fields of each card quote them, read on the date shown. Pindrop and Intel name nonprofits as an audience and state no price or free access. The other 55 cards name no institutional, education or nonprofit programme; 12 + 5 + 55 = 72. Reality Defender's ownership field records that the company "grew out of a nonprofit research initiative", and its plans are a Free API tier of 50 image scans a month and a $399 Business plan with no nonprofit programme (realitydefender.com, read 9 November 2026).
Does an institutional programme come with evidence?
Unevenly. Turnitin carries 5 records, one of them the vendor's own claims record, among them Weber-Wulff 2023, where the 2023 indicator scored 41 of 54 documents correctly with 0 false accusations in 18 human texts (arXiv 2306.15666, Tables 5 and 9, read 9 November 2026), and Van Vlasselaer 2026, where all 40 human papers were classified correctly and all 40 fully AI-generated papers scored under 20% (DOI 10.1007/s40979-026-00226-w, Tables 4 and 5, read 9 November 2026). Copyleaks carries 9, GPTKit 2, and Compilatio and PlagiarismCheck 1 each: GPTKit recorded 0 false positives in 114 human submissions in Orenstrakh 2023 and a 6% mean accuracy on unmanipulated AI text in Perkins 2024 (arXiv 2307.07411, Table 8; arXiv 2403.19148, Table 8, read 9 November 2026), and PlagiarismCheck scored 21 of 54 in Weber-Wulff 2023 with 19 of 36 AI documents undetected (arXiv 2306.15666, Tables 5 and 10). Grammarly Authorship, Trinka, Paperpal, AIDetectPlus, Passed.ai, Turnitin Clarity and Codequiry have none. DeepFake-O-Meter, the one free platform, has no record either, although its own paper describes the platform; the two closed nonprofit tools each have one, AI Writing Check in Liang 2023 as Quil.org and Check For AI in Weber-Wulff 2023. A district choosing by programme should read the ranking by independent testing beside the table above, and the results as evidence question before any score reaches a hearing.
An education programme in this index is a sales route with a quote at the end, not a discount: eleven of the twelve pages publish no price, and the one free platform is free because a university runs it, not because the reader is a school.
Questions about nonprofit and education pricing for AI detectors
Do AI detectors offer nonprofit or education discounts?
0 of 72 cards state one by name, read 10 November 2026 in the data file; 12 sell an institution, school or education tier, 11 of them by quote or contact and 1, GPTKit's Unlimited (Institution), at $20 a month (gptkit.ai, read 9 November 2026).
Is there a free AI detector for schools?
1 of 72 is free because a university runs it: DeepFake-O-Meter, from the University at Buffalo, gives an account 30 uploads a day for images, video and audio (zinc.cse.buffalo.edu, read 10 November 2026). No text detector in the index is free for schools as a programme; the free web allowances every reader can use are on the free tiers ranking.
Is Turnitin AI detection free for institutions?
No price is published: Turnitin's AI writing detection "is only available to customers that license Turnitin Originality", and Clarity is "licensed separately at an additional cost" (guides.turnitin.com, read 8 November 2026; Clarity administrator FAQs, read 9 November 2026).
What happened to the nonprofit AI detectors?
2 closed in 2023: AI Writing Check, from Quill.org and CommonLit, was taken down in August 2023 because "the new versions of Generative AI tools are too sophisticated for detection" (aiwritingcheck.org, read 10 November 2026), and Check For AI announced its sunset from 3 June 2023 (web.archive.org, read 10 November 2026).
Which institutional programme has the most study records?
9, Copyleaks, then Turnitin with 5 (one of them the vendor claims record), GPTKit with 2 and Compilatio and PlagiarismCheck with 1 each, by the study lists on their cards read 10 November 2026; the other seven cards in the institutional table have none (Copyleaks card, Turnitin card).
Sources
All read 10 November 2026 unless an earlier date is shown; the source of every row is linked in the tables.
- Turnitin AI writing detection FAQs: https://guides.turnitin.com/hc/en-us/articles/28477544839821-Turnitin-s-AI-writing-detection-capabilities-FAQs (read 8 November 2026)
- Turnitin Clarity administrator FAQs: https://guides.turnitin.com/hc/en-us/articles/37670935742989-FAQs-for-administrators-using-Turnitin-Clarity (read 9 November 2026)
- Compilatio Magister: https://www.compilatio.net/en/magister (read 9 November 2026)
- Compilatio Studium: https://www.compilatio.net/en/product/studium/ (read 9 November 2026)
- Copyleaks pricing: https://copyleaks.com/pricing (read 8 November 2026)
- Grammarly Pro and Education plans: https://www.grammarly.com/pro (read 9 November 2026)
- Trinka pricing: https://www.trinka.ai/pricing
- Paperpal pricing: https://paperpal.com/pricing
- PlagiarismCheck pricing: https://plagiarismcheck.org/pricing/ (read 9 November 2026)
- GPTKit plans: https://gptkit.ai/plans (read 9 November 2026)
- AIDetectPlus home page pricing: https://aidetectplus.com/ (read 9 November 2026)
- Passed.ai pricing (archived 17 April 2026): https://web.archive.org/web/20260417085829/https://passed.ai/pricing/
- Codequiry pricing: https://codequiry.com/pricing (read 9 November 2026)
- DeepFake-O-Meter model groups endpoint: https://zinc.cse.buffalo.edu/ubmdfl/api/deep-o-meter/api/model_groups
- UB Media Forensics Lab: https://ubmdfl.cse.buffalo.edu/
- AI Writing Check (archived 17 July 2023): https://web.archive.org/web/20230717120414/https://aiwritingcheck.org/
- AI Writing Check live notice: https://aiwritingcheck.org/
- Check For AI (archived 27 May 2023): https://web.archive.org/web/20230527085356/https://checkforai.com/
- Pindrop Pulse Inspect launch: https://www.pindrop.com/company-news/pindrop-launches-pulse-inspect (read 9 November 2026)
- Intel newsroom, FakeCatcher: https://www.intel.com/content/www/us/en/newsroom/news/intel-introduces-real-time-deepfake-detector.html
- Reality Defender API and plans: https://www.realitydefender.com/api (read 9 November 2026)
- Weber-Wulff 2023 (read 9 November 2026): https://arxiv.org/pdf/2306.15666
- Van Vlasselaer 2026 (read 9 November 2026): https://doi.org/10.1007/s40979-026-00226-w
Revision log: 2026-11-10: page created from the plans, free tier and ownership fields of 72 cards at index version 2026.11.12.
Related pages: Is there a 100% accurate AI detector? What published tests show, Is there a legit AI detector? How to tell from the record, AI detectors ranked by the LMS platforms the vendor names and Questions about AI detectors, answered from the index.