Pricing: Freemium
Verified: Yes
Editor rating: 4.0/5
Updated: August 2026
FREE unlimited AI detector + PhD proofreading $20/1K words + plagiarism checker 91M+ sources. APA/MLA citations.
Some links may be affiliate links. We may earn a small commission at no extra cost to you. Learn more
Editor-selected listing
Verified by our team
Independent & reader-supported
Editor's Verdict
Official ReviewScribbr's AI detection is genuinely free and unlimited, which differentiates it from Turnitin and most academic tools that charge per check. The detection engine has reasonable accuracy on modern AI writing but produces false positives on clean formal prose with academic register — a published scholar's writing can score as 'AI' for being dense and structured. The human proofreading service delivers APA/MLA compliance alongside substantive feedback, at the premium end of academic editing pricing. For students who need a free first pass before submission, the detector is the right starting point; treat its score as a risk signal rather than a verdict.
4.0 / 5.0
Editor RatingReviewed by Sohail Akhtar
Lead Editor & Founder
Pros
What we like
- AI detection is genuinely free and unlimited — no per-check fees unlike most institutional alternatives
- Plagiarism checker draws from a substantial academic and web database including paywalled journal content
- Human proofreading service covers style, APA/MLA citation compliance, and structural feedback together
Cons
Limitations
- AI detector can produce false positives on formal academic prose even when entirely human-written
- Human proofreading service is at the premium end of academic editing pricing, starting at $20/1,000 words
- AI detection score should be treated as a risk signal, not a definitive verdict on AI authorship
Pricing
FREE AI detector (Proofreading $20/1K; Plagiarism $19.95)
What is Scribbr?
Scribbr offers a FREE AI content detector, expert PhD proofreading ($20/1K words), and a plagiarism scanner (91M+ academic sources); it reports serving 1M+ students yearly. Perfect essays/theses/dissertations.
AI Detector: unlimited free scans with probability scores. Proofreading: field-specific PhD editors. Plagiarism: 8B+ webpages + academic papers.
College students ensure 100% original work + perfect grammar/structure before submission.
Associated Tags
scribbr ai detector free 2026, academic proofreading phd, plagiarism checker 91m sources, apa mla citation generator, essay editing service college, thesis proofreading expert, gptzero alternative free, dissertation editing service
Key Features
FREE unlimited AI detection
PhD editors field-specific
91M+ plagiarism sources
APA/MLA/Harvard citations
8B+ webpages scanned
Grammar/structure feedback
Turnaround 24-72 hours
Money-back guarantee
Real Use Cases
How professionals leverage Scribbr - FREE AI Detector + Proofreading $20/1K Words 1M+ Students
Discover practical workflows and real-world scenarios where Scribbr delivers key solutions.
01
Run a free AI detection check on student essays before submission to identify potential flagging risk
02
Check research papers and theses for plagiarism before journal or institutional submission
03
Commission professional APA/MLA proofreading for dissertation final drafts requiring format compliance
12 Best AI Tools for Students (2026): What's Still Actually Free
Quizlet moved study modes behind Plus. Anki is free everywhere but iOS. Here is what still works for $0.
Read the full comparison →Top Alternatives
Dedicated alternatives page →Free
PaperRed
Free AI plagiarism checker for Chinese students with AIGC detection, similarity reduction, and AI-assisted academic writing.
Freemium
QuillBot
AI paraphrasing suite with grammar checking, summarising, citations and plagiarism detection. Free tier caps paraphrasing at 125 words per pass.
Free
GPTZero
Detect AI-generated text in documents and submissions with sentence-level analysis and detailed probability reports.
Freemium
Elicit
AI searches 125M+ academic papers, extracts data, summarizes research - accelerates literature reviews 5x faster.
Frequently Asked Questions
Scribbr AI detector - completely free unlimited?
Yes - unlimited free scans with detailed AI probability scores.
Who proofreads Scribbr essays/theses?
PhD/Masters editors specializing in your field (English/CS/Business/Law) with 99% satisfaction.
Plagiarism database size/comparison?
91M+ academic sources + 8B+ webpages vs Turnitin 1B+ sources. Perfect college/university.
Proofreading cost per word/page?
$20/1K words (~$10/page double-spaced). 24-72 hour turnaround guaranteed.
APA/MLA citation generator accuracy?
100% accurate APA 7th/MLA 9th/Harvard/Chicago. Books/journals/websites perfect.