Scribbr
Leading academic proofreading, plagiarism checking, citation generation, and AI detection platform founded in Amsterdam, now part of Learneo
Product node overview & trust baseline
Operator provenance, privacy baseline and site-wide pricing belong directly to the product node and are inherited across linked task edgesScribbr (founded in 2012 in Amsterdam, Netherlands, now part of educational technology group Learneo / Course Hero) is an academic integrity, editing, and citation platform widely trusted across universities worldwide. In partnership with Turnitin, it provides plagiarism scanning against 99B webpages and 8M publications alongside free, sign-up-free AI detection (up to 1,200 words/check), APA/MLA citation generation, and grammar checking. Scribbr employs a pay-per-document and free-tool model without forced subscriptions: AI detector and citation tools are free; premium plagiarism checking is priced per document: Small (up to 7,499 words) $19.95, Regular (7,500–49,999 words) $29.95, and Large (50,000+ words) $39.95.
Amsterdam, Netherlands · Founded in 2012
Provenance baseline: 19/20 · Established 10+ year European academic platform under Learneo with high institutional credibility in higher education.
AI detector and citation tools are 100% free with no sign-up; premium plagiarism check is billed per document without recurring subscription: Small $19.95, Regular $29.95, Large $39.95.
Pricing transparency baseline: 35/35 · Cancellation:
Strict pledge that submitted papers are never added to public databases; GDPR compliant
Stripe · Google Analytics · Turnitin · Datadog
Product-level pricing & rules baseline
Verified plans, billing periods and cancellation terms owned by this product node; task-specific credit costs and free export limits are detailed per capability edge belowScribbr free sign-up-free tools and pay-per-check plagiarism report pricing model · 2026-10-31
Basic AI content detection and citation generation
Turnitin plagiarism check and AI content analysis
Academic plagiarism check for regular manuscripts and theses
Academic plagiarism check for extensive monographs and dissertations
4 plan / billing-period records, all listed; — means that period is not recorded.
AI detector and citation tools are 100% free with no sign-up; premium plagiarism check is billed per document without recurring subscription: Small $19.95, Regular $29.95, Large $39.95.
Cancellation, sources & verification record
Cancellation and refund terms unverified
Scribbr Plagiarism Checker & Pricing Page ↗ · 2026-10-31 Capture 1 ↗
Archived official pricing sources: Scribbr Plagiarism Checker & Pricing Page (2026-10-31) [text snapshot ↗]
Capability map & linked task edges
Whenever a capability passes fixed-fixture testing, an edge is automatically linked between this product node and the task topic for horizontal comparison.
| Linked task edge | Score | Assessment · historical test | Test scope & delivery | Inspect capability / follow edge |
|---|---|---|---|---|
| AI content detection | 98/100 | Scribbr Free AI Detector, powered by Learneo/QuillBot v7.1.0, evaluated our 90-word benchmark sample in 1.8s (2.0s end-to-end), accurately detecting 100.0% AI probability with sentence-level diagnostic coloration and guest access up to 1,200 words, earning an overall score of 98. | JSON · Output attached Historical test · 2026-11-03 Account / tier unconfirmed · Calibrated AI vs human text benchmark (literature master & LLM prose, 780 B) · Output attached |
Discovered product capabilities (pending fixture test / edge incubation)
Recorded capability · Not yet scoredThese capabilities have been identified on the product but have not yet undergone fixed-fixture testing. When an emerging capability co-occurs across multiple products, it incubates a new task edge.
Tested task edges (with scores and native artifacts) are strictly separated from discovered untested capabilities (unscored).
Peer product comparison across shared task edges
Matched by overlapping tested task edges; compare site-wide billing models alongside per-task benchmark scoresVerified monthly rates: Personal $16.99/mo, Pro $99.99/mo; explicit annual upfront invoice totals: Personal $167.88/yr ($13.99/mo), Pro $899.88/yr ($74.99/mo); extra unified credits available for top-up.
- AI content detection：Scribbr 98/100 vs Copyleaks 94/100
Verified direct monthly rates: Premium $23.99/mo, Professional $45.99/mo; annual plan cards show monthly equivalents ($12.99/mo, $24.99/mo) without explicit annual invoice total; Free tier provides 10,000 words/mo.
- AI content detection：Scribbr 98/100 vs GPTZero 96/100
Free tier is permanently free; Pro tier is $12/month with a 7-day free trial and email reminder sent 2 days prior to billing.
- AI content detection：Scribbr 98/100 vs Grammarly 96/100
Annual tier displays $8.33 USD per month billed annually (58% off) without explicit annual invoice total; annual amount remains null and unverified. Free tier is permanently free with 100-word limit.
- AI content detection：Scribbr 98/100 vs QuillBot 97/100
Linked capability test: AI content detection
2026-11-03 · Native output attached. Findings cover the recorded fixture and conditions; paid specifications may be untested.
Verified native export & same-run screenshot evidence
Open native exported file (JSON · Output attached) ↗
Task quality
AI probability 100% · Human probability 0% · Classification label AI-generated · Confidence calibrated Yes
Detailed facts & historical record
- Measured fixture results
AI probability: 100% · Human probability: 0% · Classification label: AI-generated · Confidence calibrated: Yes
- Fixture findings
Accurately diagnosed 100.0% AI probability and 0% human probability matching ground truth, providing full sentence-level coloration breakdown.
- Original historical observation
Submitted 90-word standard AI anchor text (anchor_aidetector_v1, ai_sample.txt) to Scribbr AI detector (scribbr.com/ai-detector/); evaluated via v7.1.0 model in 1.8s (2.0s end-to-end), accurately diagnosing 100% AI generation probability with complete sentence-level diagnostic coloration (01_landing.png, 02_result.png).
- Suitable uses · historical assessment
Not verified
- Result & output evidence
Delivery capabilities
JSON · Output attached · Check watermark record
Detailed facts & historical record
- Recorded export specifications
JSON · Output attached · Check watermark record
- Historical specification note · not an official maximum
Not verified
- Watermark observation
Not verified
- Batch & API
Not verified
- Recorded free-tier dimensions
Not verified
- Attached file dimensions
Not verified
Speed & reliability
About 2s end to end in this run; reliability not retested
Detailed facts & historical record
- Timing observation
Network-observed server wait: 1.8s · End-to-end reference: 2s
- Date & fixture
2026-11-03 · anchor_aidetector_v1 · US-West (California, AS2914)
- Repeated tests & reliability
No standardized repetition count, success rate or variability range is recorded.
Interaction experience
Account requirement unconfirmed
Detailed facts & historical record
- Account requirements
Not verified
- Sign-in methods
No login required for basic tools; Google OAuth or email for premium plagiarism checks
- Manual adjustment
Not verified
- Interaction observations
Not verified
Background & reputation
Scribbr B.V. (Learneo, Inc.) · Long-term reputation not independently verified
Detailed facts & historical record
- Service lifecycle notice
Not verified
- Operator
Scribbr B.V. (Learneo, Inc.)
- Recorded origin
Amsterdam, Netherlands / California, US
- Domain history record
Founded in 2012
- Background & reputation assessment
Not verified
- External reputation record
Internationally recognized academic integrity brand serving millions of students, backed by top Trustpilot rating.
Engineering & privacy
Uploaded for cloud processing；Explicit retention period unconfirmed; inspect policy record
Detailed facts & historical record
- Processing location
Uploaded for cloud processing
- Third-party tracking record
Google Analytics · Datadog
- Engineering & privacy assessment
Not verified
- Retention statement
Explicit retention period unconfirmed; inspect policy record
Task free allowance & pricing disclosure
Not recorded
Not recorded
Site-wide plans belong to the product node (see Product-level pricing baseline ↑).
Expand site-wide plans aligned for AI content detection (4 records)
Scribbr free sign-up-free tools and pay-per-check plagiarism report pricing model · 2026-10-31
Basic AI content detection and citation generation
Turnitin plagiarism check and AI content analysis
Academic plagiarism check for regular manuscripts and theses
Academic plagiarism check for extensive monographs and dissertations
4 plan / billing-period records, all listed; — means that period is not recorded.
AI detector and citation tools are 100% free with no sign-up; premium plagiarism check is billed per document without recurring subscription: Small $19.95, Regular $29.95, Large $39.95.
Cancellation, sources & verification record
Cancellation and refund terms unverified
Scribbr Plagiarism Checker & Pricing Page ↗ · 2026-10-31 Capture 1 ↗
Evaluation basis & full scores · Overall 98.3/100
Overall = honesty & reputation × 30% + capability × 70%. Component maxima follow this report’s rubric. List scores are rounded for display; original precision is retained here.
Scoring version 2.3.1 · Test fixture anchor_aidetector_v1
Honesty & reputation · 99/100 · 30%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Pricing transparency | 35 / 35 | Explanation unavailable | Evidence A → |
| Interaction restraint | 30 / 30 | Explanation unavailable | Evidence A → |
| Background & reputation | 19 / 20 | Explanation unavailable | Evidence A → |
| Engineering & privacy | 15 / 15 | Explanation unavailable | Evidence A → |
Capability · 98/100 · 70%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Task quality | 65 / 65 | AI Probability: 100% · Human Probability: 0% · Label: ai · Calibrated: Yes | Evidence A → |
| Deliverable specifications | 18 / 20 | Watermarked or blocked free export (0/8) | Evidence A → |
| Processing speed | 15 / 15 | Network-observed server wait: 1.8s (API mode: cloud_api_sync; network upload 0.2s / end-to-end 2s shown for reference only, never penalized) | Evidence A → |
Legacy scores may include advertised maximum capabilities. Read tested output separately from paid capabilities. Records without matching tiers and scope are not ranked together.
Developer & citation kit · Claim updates, request benchmarks & embed verified badges
Product developers and writers can embed these SVG badges in official websites, GitHub READMEs or documentation, or use the channels below to sync product-wide plans and capabilities.
[](https://realtest.org/tools/scribbr.com/) <a href="https://realtest.org/tools/scribbr.com/"><img src="https://realtest.org/badges/scribbr.com.svg" alt="Scribbr — RealTest" height="24" /></a> 
[](https://realtest.org/tools/scribbr.com/#feature-ai-detector)