Turnitin is what your university already runs on every essay you submit. The AI report is locked to instructors and admins by design, and Turnitin does not sell individual subscriptions at any price, so you cannot preview your own score before clicking submit. TextSight is the tool you run on your own draft before that submission happens. Sentence-level highlights show exactly which lines a detector reads as AI, with ESL-aware calibration so formally-taught prose does not get over-flagged, a free tier that needs no email, and a .edu Pro plan at $13.99 a month. This page is the student-side framing: not which one to pick, but how to use both so the Turnitin report does not surprise you.
A short feature table first, from the student perspective. The narrative sections below go deeper on each row, with the parts where Turnitin is genuinely the institutional standard called out clearly.
| Feature | TextSight | Turnitin AI Detection |
|---|---|---|
| Primary product | Student-side AI detector with Authenticity Score and sentence-level evidence | Institutional AI detector bundled inside the Similarity Report for instructors |
| Detection type | DeBERTa plus ELECTRA classifier, sentence-by-sentence rationale, per-line colour map | Document-level AI percentage rendered inside an instructor-facing Similarity Report |
| Free tier | 3 scans per day, 5,000 chars per scan, no signup, no card | Not available to individual students at any price |
| Pricing model | Direct self-serve subscription, monthly or annual, .edu discount auto-applied | Institutional contract only; not sold to individuals |
| Entry price | $0 free, Starter $9.99/mo, Pro $19.99/mo | Estimated $3 to $8 effective per-student per year inside campus license; not purchasable individually |
| Pro annual effective | $14.99/mo on annual billing, billed $179.88/year | n/a, no individual plan exists |
| .edu discount | $13.99/mo on verified .edu, .ac.uk, .ac.in, .edu.au emails | n/a, institutional contract only |
| Sentence-level evidence | Yes, per-sentence colour map and rationale on every scan including free tier | Limited; document-level percentage with instructor-facing Similarity Report |
| ESL FPR (internal estimate) | 6% on a 100-passage ESL benchmark | Estimated 30 to 40% false-positive rate on ESL writing per public university advisories (Vanderbilt, Pittsburgh paused or moved feature to advisory status) |
| Native FPR (internal estimate) | 3% on a 100-passage native English benchmark | Not individually benchmarkable; institutional-only access blocks side-by-side testing |
| GPT-4 TPR (internal estimate) | 92% true-positive rate on a 100-passage GPT-4 benchmark | No public per-model TPR; instructor-only access blocks reproducible benchmarking |
| Claude TPR (internal estimate) | 90% true-positive rate on a 100-passage Claude benchmark | No public per-model TPR; instructor-only access blocks reproducible benchmarking |
| Bundled AI rewriter | Yes, integrated closed-loop AI rewriter; 2 lifetime uses on free, 20,000 words/mo on Starter, 50,000 words/mo on Pro | No AI rewriter; Turnitin is enforcement-only by design |
| REST API | Yes on Business at $29.99/mo annual, with audit log and team seats | LTI 1.3 integration into LMS only; no individual or self-serve API |
| Best fit | Students pre-flighting drafts before institutional Turnitin submission | Universities running mandatory checks on submitted essays inside Canvas, Blackboard, Brightspace, Moodle |
Prices verified 2026-06-03. Verify on each tool's pricing page before subscribing. Win markers reflect the student-side feature gap, not a third-party audit.
Four things Turnitin does for the student record that TextSight does not and will not try to. Acknowledging them is the whole point of writing this page as a pairing rather than a replacement.
When the grade comes back, the Turnitin AI score is the number on the institutional record. Your professor opens the Similarity Report inside the LMS. The integrity office, if it ever gets that far, opens the same report. Whatever TextSight says is private to you; whatever Turnitin says is the document that drives the grading conversation. That is not a feature TextSight can match for the institutional side of the workflow.
If your school uses Turnitin (most US, UK, Canadian, Australian, Indian, and Filipino universities do), every essay you submit through Canvas, Blackboard, Brightspace, or Moodle is automatically scored on the way through. You do not click anything. You do not configure anything. The integration runs whether you remember it or not, which is exactly why pre-flighting on your own side matters.
Turnitin is paid by your university through institutional licensing, baked into your tuition. You do not see a Turnitin charge on your card. For students on tight budgets that is real, and it is the main reason a free TextSight tier exists; the pre-submission draft check should not add a subscription to a workflow you are already in.
Turnitin scans the full submission regardless of length, including dissertations and theses that run 20,000 plus words. TextSight's free tier caps at 5,000 characters per scan, and Pro at 10,000, which means long documents need to be split into sections. For final-year project writers, that is a real workflow tax. The right pattern for very long documents is to split into sections, pre-scan each section in TextSight, then submit the combined document to Turnitin in one piece.
If you are submitting through an institutional LMS and your school already pays for Turnitin, you cannot opt out of that part of the workflow. The rest of this page is about what to do on your side before the institutional report runs.
For students writing four to eight essays a semester across mixed-policy courses, here is where TextSight beats Turnitin on the work that matters to you, the writer, before the institutional report runs.
Turnitin licenses to institutions only. As a student you cannot buy a Turnitin subscription at any price. You cannot run your own essay through Turnitin to preview the AI report before submitting. TextSight sells directly to students: free tier with no signup, Pro at $19.99 monthly or $14.99 on annual billing, verified .edu emails at $13.99 monthly. No procurement, no waiting, no IT ticket. That is a different market, not a feature delta, and it is the first reason students land on this page.
The single biggest gap in the student-side Turnitin experience is that you cannot see the AI report before submitting. TextSight closes that gap. You see what a sentence-level detector will likely flag, before clicking Submit. Turnitin runs once on submission; TextSight runs as many times as you want (3 a day on free, unlimited on Pro). Edit, re-scan, edit again. The loop is the actual product, and Turnitin's enforcement role means it cannot ship one.
Every TextSight scan returns a sentence-by-sentence colour map with a short rationale per line: rhythm flat, vocabulary cluster, paragraph cadence, sentence-length variance. You see the exact sentences that drove the score and you edit those lines, not the whole essay. Turnitin's report shows a document-level percentage with limited highlights inside an instructor-facing view; as a student you usually do not see the per-line evidence used to render the number.
Turnitin's AI detector has been challenged in higher-ed press and by university policy offices for over-flagging formally-taught ESL writing. Vanderbilt and Pittsburgh paused the feature; other institutions made it advisory rather than enforcement. TextSight is tuned against writing samples from Indian universities, Filipino education programmes, and Chinese postgraduate writing. In our internal testing the false-positive rate on identical-quality ESL essays is roughly 40 percent lower. For ESL students worried about wrongful flags, the calibration gap matters.
TextSight's free tier is three scans a day at 5,000 characters per scan with no email, no signup, and no card. Pro is $19.99 monthly or $14.99 monthly on annual billing with unlimited scans, and verified .edu emails get Pro at $13.99 monthly. Many students subscribe to Pro only during midterm and finals weeks and drop back to free between them. Turnitin has nothing at this price point because Turnitin is not for individual purchase.
Turnitin's AI detector is locked to instructor and integrity-office accounts. As a student or independent reviewer, you cannot get an account, you cannot run controlled inputs, and you cannot read the per-passage output. That blocks reproducible head-to-head testing. Here is what we can publish honestly and what we cannot.
TextSight's classifier was evaluated on a 100-passage internal benchmark spanning native English and ESL writing, GPT-4 and Claude generations, and human-authored controls. The numbers we publish: 92% true-positive rate on GPT-4, 90% on Claude, 3% false-positive rate on native English, and 6% on ESL writing. Combined that lands at roughly 91% TPR and 4.5% FPR across the full set. Those numbers are reproducible against the same passage set if you run them through app.textsight.ai. They are not vendor claims; they are observed scores.
Turnitin sells per-institution. No student, journalist, or independent researcher can buy seats. Every published Turnitin AI accuracy number traces back either to Turnitin's own marketing (98% accuracy, less than 1% false-positive rate) or to a handful of university-led studies on small passage sets. Those studies, including the Vanderbilt and Washington Post analyses widely cited in 2023 to 2024, reported false-positive rates in the 30 to 40 percent range on ESL writing and led several institutions to pause or downgrade the feature. We cite that range as an honest external estimate, not as a head-to-head benchmark.
If you are an ESL student worried about being wrongly flagged, the 30 to 40 percent versus 6% gap is the entire reason a pre-submission scan exists. Run your finished draft through TextSight first. If it scores above 75, the prose pattern is unlikely to look AI-shaped to any sentence-level classifier including Turnitin's. If it scores below 75, edit the red sentences, re-scan, and only then submit through your school's required Turnitin workflow. The benchmark gap is the cost of Turnitin's institutional-only access model; the pre-flight is how you neutralise it.
The honest workflow is not Turnitin versus TextSight. It is TextSight, then Turnitin. Two tools serving two stages of the same submission flow.
Write the essay in whatever editor you already use: Google Docs, Word, Notion, your LMS. Using ChatGPT for an outline or to break writer's block is the realistic 2026 default and not the issue you are pre-flighting against. Write the prose itself in your own voice from your own notes.
Open app.textsight.ai, paste the final draft, and scan. Free tier handles 5,000 characters in one paste; .edu Pro handles 10,000. The scan returns in about thirty seconds with an Authenticity Score and a sentence-by-sentence colour map.
Above 75, submit as is. Between 50 and 75, look at the red sentences and rewrite those specifically. Below 50, the essay needs more substantial editing. Use the integrated AI rewriter on the hardest sentences if you have free uses left. The point is to fix the lines that are genuinely AI-shaped, not to game the score on prose you wrote yourself.
Submit through your institution's LMS as required. Because you pre-scanned and edited, the Turnitin AI report should land in the 0 to 20 percent range, which is below the review threshold at most institutions. If it doesn't, the TextSight scan history (90 days on Pro) is useful documentation if you need to contest the result.
Three things. First, you catch the obvious AI-flag-bait sentences before they reach your professor. Second, if you do get flagged, you arrive at the appeal with a sentence-level TextSight report and a documented authoring trail; multiple data points are harder to dismiss than one challenged score. Third, you avoid the second-guessing that happens when the verdict shows up cold after submission.
TextSight Pro is $19.99 monthly or $14.99 monthly on annual billing, with .edu verified emails at $13.99 monthly. Turnitin is institutional contract only; estimates put the effective per-student cost between $3 and $8 a year when bundled into your campus license, but seats are not available for individual purchase.
Billed $89.88/year, Save $30
Billed $179.88/year, Save $60
Billed $359.88/year, Save $120
Yearly billing saves 25%. Verified .edu, .ac.uk, .ac.in, and .edu.au emails get Pro at $13.99/mo automatically. View full pricing →
Four common student situations and the realistic Turnitin plus TextSight setup for each. Pick whichever matches your next deadline.
Free tier is enough. Three scans a day at 5,000 characters covers a typical 800-word undergrad essay with room for two re-scans after editing. Turnitin runs automatically on your school's submission portal. No subscription required.
Setup: TextSight Free + your school's Turnitin.
Four to eight essays across two weeks. .edu Pro at $13.99/mo pays back on the first week: unlimited scans, 10,000 character pastes for longer essays, 90-day history for documentation if any one of them gets flagged. Cancel back to free after finals.
Setup: TextSight Pro .edu + your school's Turnitin.
Long document, multiple revision cycles, examiner who is now expected to check for AI. .edu Pro for 10,000 character pastes, file upload for chapters, 90-day history matters when an examiner asks about a draft you sent in three weeks ago. Run the final submission through your university's Turnitin workflow in one piece.
Setup: TextSight Pro .edu + your university's Turnitin.
Use TextSight specifically for the ESL calibration. Pre-scan a draft, expect scattered yellows on formally-taught structured prose, focus edits on clusters of red. The 90-day Pro history and PDF export give you specific evidence if a Turnitin false positive ever needs to be contested.
Setup: TextSight Pro (ESL calibration) + your school's Turnitin.
The college-student landing page with perplexity, burstiness, and the .edu Pro plan.
For college →The four-step pre-scan workflow that catches Turnitin flags before your professor does.
Read the guide →Seven-tool ranking with Turnitin correlation and false-positive rates side by side.
See the ranking →The general head-to-head, including the institutional and procurement angle.
Read the compare →Free to try. No card. Verified .edu emails get Pro at $13.99 a month.