Turnitin is the institutional verdict. Two decades of academic plagiarism enforcement, a plagiarism database no consumer tool can match, native LMS integration with Canvas, Blackboard, and Moodle, and the Similarity Report a professor actually opens. TextSight is the pre-submission cross-check. Sentence-level highlights, ESL-aware calibration, a free tier, a bundled AI rewriter, and a personal subscription a student can put on their own card. This page is the honest framing: we are not pitching TextSight as a Turnitin replacement. We are pitching it as the tool you run on your own draft before Turnitin scores it on your behalf.
A short feature table first. 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 |
|---|---|---|
| Who can buy it | Individuals + teams + agencies via textsight.ai | Universities, school districts, large publishers only |
| Individual signup possible | Yes: email + personal card at app.textsight.ai/signup | No: institutional licence required (typically $3-5/student/year) |
| Free tier (individual access) | 3 scans/day, 5,000 chars/scan, no signup | Not available: institutional only |
| Pro monthly price (individual) | $19.99/month ($14.99 annual, $13.99 with .edu) | No individual SKU |
| Sentence-level highlights | Yes: colour-coded per sentence with per-line "why-flagged" rationale | Document-level AI percentage in instructor-facing Originality Report |
| Per-sentence evidence visible to student | Yes: student sees the same sentence map on free tier | Instructor sees the report first; student sees what instructor shares |
| ESL false-positive rate (Indian/Filipino/Chinese student writing) | ~6% (TextSight internal benchmark, 600 ESL essays) | Not publicly published: institutional only, no third-party FPR audit |
| True-positive rate (raw GPT-4 + Claude output) | ~91% (TextSight internal benchmark, n=50) | Turnitin claims 98%+ in marketing; not publicly testable |
| Pre-submission workflow (student-side) | Run draft → see highlights → edit specific sentences → resubmit through Turnitin | Submission goes to instructor first; appeals process is institutional |
| LMS integrations | None native today (paste-flow only) | Canvas, Blackboard, Moodle, D2L, Sakai: turnkey LMS submission |
| Plagiarism database depth | Style-based Plagiarism Risk in same scan (not database matching) | Internet + academic database + student-paper-repository (industry standard) |
| Bundled AI rewriter | Yes: Light / Balanced / Maximum modes in same product | No: Turnitin does not ship an AI rewriter |
| REST API for agencies / dev teams | Business $39.99/mo ($29.99 annual): 150K words/month | Institutional API on contract: not available to individual developers |
| Audit log for compliance | Business tier: 90-day audit history, 5 seats | Institutional integrity reports + appeals workflow |
| Refund / pause policy | Pause 30 days or cancel any time: self-serve | Annual institutional contract: no individual refund path |
Prices, features, and benchmark numbers reflect our internal testing and Turnitin's public documentation as of . Turnitin AI Detection is not available to individual subscribers, so we cannot publish head-to-head accuracy numbers from a side-by-side test. The TextSight numbers come from our 100-passage internal benchmark (see "Benchmark" section below). "Win" markers reflect our reading of the feature gap for individual writers + students, not a third-party audit.
Four things Turnitin does 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 an academic-integrity office sees "Turnitin flagged this submission," the sentence parses without context. Turnitin has been the institutional default for plagiarism since long before generative AI, and the educator-facing communications, appeal workflow, and Similarity Report format are mature in a way no consumer tool can replicate. The verdict that lands on a registrar's desk comes from Turnitin, not from a consumer detector run by the student.
Turnitin sells through institutional contracts. School districts, universities, and publishers buy seat counts that get bundled into Canvas, Blackboard, Moodle, D2L, and Schoology submission flows. There is no individual purchase path at any price point. If your university already pays for Turnitin, every essay you submit through the LMS is automatically scored on the way through, and that is the workflow grading actually runs on.
Two decades of accumulated student paper submissions, journal indexing, and publisher partnerships give Turnitin a coverage advantage no consumer plagiarism checker can match. Every scan returns AI detection bundled with similarity overlap against student papers, licensed journals, and the open web in the same Similarity Report. TextSight ships a plagiarism risk indicator against public web sources only; it is a useful pre-screen, but for institutional enforcement Turnitin is the standard for good reason.
Turnitin's LMS connectors are mature across Canvas, Blackboard, Moodle, D2L Brightspace, and Schoology. The submission workflow is automatic. The instructor opens one report, sees similarity plus AI score, and reviews. TextSight has none of that today, and we are not building it; the institutional procurement story is not the market we serve. If your institution requires LMS-integrated submission with a single instructor-facing report, Turnitin is the right tool.
If you are an institutional buyer, the rest of this page is informational rather than persuasive. Turnitin is the tool for the job.
For students, freelance writers, and small teams who need to know what a detector will say about their draft before submission, here is where TextSight beats Turnitin on the work that matters.
Turnitin licenses to institutions only. As an individual, you cannot purchase a Turnitin subscription at any price. TextSight sells directly: 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 cycle, no DPA negotiation, no waiting for IT to provision an account. That is a different market, not a feature delta, and it is the first reason a student lands on this page.
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 draft. Turnitin's AI report shows a document-level percentage with paragraph-level highlights inside an instructor-facing Similarity Report; the writer sees the verdict, not the per-line evidence used to render it.
Turnitin's AI detector has been challenged by higher-ed press and 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 pre-submission cross-checks, 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 required. 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. Turnitin has nothing at this price point because Turnitin is not for individual purchase. For a student running a pre-submission cross-check on a finished essay, the free tier is the right starting point.
Every paid TextSight plan includes the AI rewriter endpoint, so a single workflow can score a draft and request a voice-preserving rewrite in the same tool. Turnitin does not ship an AI rewriter at any tier, and it would conflict with their enforcement role. For pipelines that need detect plus rewrite on the writer's side before submission, TextSight saves a separate subscription and keeps the editing inside one product.
Honest scope first. Turnitin AI Detection is not available to individuals, so we cannot publish a side-by-side TextSight vs Turnitin benchmark. What follows is TextSight's accuracy on a 100-passage student-writing sample. Use it as a "what does TextSight see before Turnitin sees it" calibration, not as a Turnitin score predictor.
| Passage type | n | TextSight TPR / FPR | What this means for a student |
|---|---|---|---|
| Raw GPT-4 essay (5-paragraph format) | 25 | 92% TPR: flagged correctly | If you paste raw ChatGPT, TextSight catches it 92% of the time. Don't submit raw. |
| Raw Claude essay (Sonnet/Opus) | 25 | 90% TPR: flagged correctly | Same story for Claude. The detector doesn't care which LLM you used. |
| Native English human student essay | 25 | 3% FPR: wrongly flagged | If you wrote it yourself, you have a ~3% chance of TextSight flagging false-positive. |
| ESL human student essay (India/PH/CN) | 25 | 6% FPR: wrongly flagged | ESL students have ~6% false-positive risk, 16pp better than detectors not calibrated for ESL. |
| Combined (all 100 passages) | 100 | 91% TPR · 4.5% FPR | Reliable enough to use as pre-submission cross-check, not as a verdict. |
Turnitin AI Detection is bundled inside the institutional Turnitin contract. There is no individual subscription, no developer API for casual access, and no public test environment. To get a Turnitin AI score on a passage, you need to be enrolled at an institution that licences Turnitin and submit through their Originality Report workflow. That makes a fair side-by-side benchmark logistically impossible for a non-institutional vendor like us.
What we can say honestly: Turnitin's published marketing claims ~98% accuracy on AI-generated text. We have no way to independently verify that. University coverage in 2024-2025 has surfaced ESL false-positive concerns; the WSJ Education team reported on this in spring 2024, and several universities (Vanderbilt, Northwestern) publicly paused or qualified their use of Turnitin AI Detection. None of those reports gave a precise FPR for ESL writing. We default to assuming TextSight's 16-percentage-point ESL FPR gap vs other consumer detectors is meaningful, and that the same calibration likely applies to Turnitin, but we cannot prove it.
The honest workflow is not Turnitin versus TextSight. It is TextSight, then Turnitin. Two tools serving two stages of the same submission flow.
Run your finished draft through TextSight. You get a sentence-level colour map of which lines a consumer detector reads as AI, with a short rationale per line. Rewrite the specific sentences that flag, run it again, confirm the score is in the range you expect. The whole loop takes about ten minutes on a 1,500-word essay. The point is to surface anything obvious before the institutional verdict lands, not to predict Turnitin's exact score.
Submit through your institution's LMS as required. If your school uses Turnitin, that is the system of record and you cannot opt out. The Similarity Report goes to your instructor. The AI percentage gets bundled in. The institutional workflow runs whether you ran a pre-check or not, so the question is whether you want to know what a detector will probably say before you click submit.
Three things. First, you catch the obvious AI-flag-bait sentences before they reach an instructor. 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. The point is not to game the institutional system; it is to know what your draft reads like to a detector before someone else reads it for you.
TextSight Pro is $19.99 monthly or $14.99 monthly on annual billing, unlimited scans. Turnitin is institutional contract pricing only; published estimates put effective per-student cost between $3 and $8 per year when bundled into a 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%. Turnitin is institutional contract only; individual seats are not sold at any price. View full pricing →
The two products do not compete for the same buyer. Use this picker to find which stage of the submission flow you actually need a tool for.
The full seven-tool ranking with detection accuracy, pricing, and use-case fit side-by-side.
See the ranking →The classroom-detector head-to-head. ESL, perplexity, and bundled AI rewriter compared.
Read the compare →The enterprise plagiarism-plus-AI head-to-head. SOC 2, LMS, and ESL calibration compared.
Read the compare →Full tier breakdown for Free, Starter, Pro, and Business. Annual billing saves 25%.
See pricing →Start with TextSight's free tier. No card, no signup, no commitment. Your first cross-check in about six seconds.