Which AI detectors have a student plan? The four cards that price a student, academic or education tier for one person, and the nine that sell education to institutions only

Four, and only one of them is named "Academic" rather than priced for a school. Isgen's Academic plan is the cheapest monthly figure of the four at $8 a month on annual billing, with 350,000 detection words a month and a 60,000-character ceiling per submission, where the Ultimate plan at $24 a month removes both limits (isgen.ai, read 9 November 2026). Compilatio sells to students by credit rather than subscription: Studium's 20-credit pack at EUR 4.99 covers 5,000 words and the 400-credit pack at EUR 34.99 covers 100,000 words, with credits valid for six months, while the institutional product, Magister+, carries no public price (compilatio.net, read 9 November 2026). Detecting-AI.com's Scholar plan is the dearest of the four at $29.99 a month, and the name marks the top of the vendor's three personal tiers rather than a discount: Writer costs $9.99 and Pro $19.99 a month on the same page, each with unlimited AI detection, and Scholar adds unlimited humanizer words and 36,000 plagiarism credits a year (detecting-ai.com, read 10 November 2026). ZeroGPT's EDU plan sits between its MAX and EXPERT tiers at C$32.99 a month on yearly billing, with 250,000 characters per detection and 80 batch files; the page priced every plan in Canadian dollars to the index's reader and showed no switcher (zerogpt.com, read 8 November 2026).

Each of the four prices is the vendor's displayed figure on the read date, and the pages name no eligibility rule: nothing on the four pages asks for a student e-mail address or an enrolment document.

Nine cards name a tier for schools, universities or education that has no displayed price for one person, or a price aimed at a team. Copyleaks lists "Education and Enterprise" as custom (copyleaks.com, read 8 November 2026); Grammarly Authorship's "Enterprise and Grammarly for Education" tier is bought through sales, gives education admins aggregated Authorship analytics, and K-12 admins must ask their Customer Success Manager to turn Authorship on (grammarly.com, read 9 November 2026); Compilatio's Magister+ is sold to institutions by demo and quote and is the only Compilatio product that carries AI detection for teachers (compilatio.net, read 9 November 2026); Trinka's "Enterprise and Institution" tier is custom priced with LMS and SSO integration (trinka.ai, read 10 November 2026); Paperpal's "Essentials Pack (Universities and Corporates)" is "Contact us", with the packages data listing "AI_DETECTION 10000 per MONTH" on the corporate-essential package (paperpal.com, read 10 November 2026); PlagiarismCheck's two Organizations tiers are "Request quote" (plagiarismcheck.org, read 9 November 2026); AIDetectPlus prices its Enterprise tier for "schools, colleges and large teams" on request (aidetectplus.com, read 9 November 2026); Passed.ai's Institutional tier reads "Flexible, Let's chat" on the pricing page archived 17 April 2026, and registration was closed on 10 November 2026 (web.archive.org, read 10 November 2026). The one institution tier with a displayed price is GPTKit's "Unlimited (Institution)" at $20 a month or $144 a year, for up to 20 team members with API access (gptkit.ai, read 9 November 2026).

Education, institution and school tiers with no student price

Tiers as the plans field of each card names them, read on the date shown. Turnitin and Turnitin Clarity carry no plan list at all: Turnitin's AI writing detection "is only available to customers that license Turnitin Originality" (guides.turnitin.com, read 8 November 2026), and Clarity is licensed separately through an account manager or the sales form (guides.turnitin.com, read 9 November 2026), so a student cannot buy either. The other 57 cards name no student, academic, scholar, education or institution tier in their plans field; 4 + 9 + 2 + 57 = 72. The institutional programmes, and the nonprofit and university tools that charge nothing, are read in full on the education and nonprofit pricing question.

No. A plan name is a price label, and the four cards that carry one have thin test records: Isgen, Detecting-AI.com and Compilatio have 0, 0 and 1 study records in the ranking by independent testing, and Compilatio's one is Weber-Wulff 2023, where the free 2023 tool scored 40 of 54 documents correctly with 0 false accusations in 18 human texts (arXiv 2306.15666, Tables 5 and 9, read 9 November 2026). ZeroGPT has 7 records, among them a 1.42% false positive rate at the 0.5 threshold on RAID's human-written documents (arXiv 2405.07940, Table 4, read 8 November 2026) and 0 false accusations in 18 human documents in Weber-Wulff 2023. A student who wants to check a draft before submission should read the sentence-level highlighting question first, because a plan that returns one percentage for a whole essay says nothing about which paragraph drew the score.

A named student plan is a discount label the vendor chose; none of the four pages verifies enrolment, and the plan's name is no evidence of how the detector performs on student writing.

All read 10 November 2026 unless an earlier date is shown; the source of every row is linked in the tables.

• Isgen pricing: https://isgen.ai/pricing (read 9 November 2026)
• Compilatio Studium: https://www.compilatio.net/en/product/studium/ (read 9 November 2026)
• Compilatio Magister: https://www.compilatio.net/en/magister (read 9 November 2026)
• Detecting-AI.com pricing: https://detecting-ai.com/pricing
• ZeroGPT pricing: https://www.zerogpt.com/pricing (read 8 November 2026)
• QuillBot Premium: https://quillbot.com/premium (read 8 November 2026)
• Scribbr plagiarism checker pricing: https://www.scribbr.com/plagiarism-checker/ (read 8 November 2026)
• GPTZero free plan (vendor blog): https://gptzero.me/news/best-ai-detectors (read 8 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/
• 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)
• Weber-Wulff 2023 (read 9 November 2026): https://arxiv.org/pdf/2306.15666
• RAID benchmark, Dugan et al. 2024 (read 8 November 2026): https://arxiv.org/pdf/2405.07940

Revision log: 2026-11-10: page created from the plans and free tier fields of 72 cards at index version 2026.11.12.