PlagiarismCheck.org

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

PlagiarismCheck.org is ranked #1 of 29 in plagiarism checkers on Inferse. It runs on API, Browser extension, Web.

Compared on plagiarism checkers

Free plan: Yesplagiarismcheck.org
API access: Yesplagiarismcheck.org

Facts

Core purpose: The service checks text originality, verifies authorship, detects AI-generated content and helps improve writing.plagiarismcheck.org · 1 Oct 2026
Free checking: Users can check 2 pages for free.plagiarismcheck.org · 1 Oct 2026
Detection capabilities: The checker detects exact matches, substitutions and rearrangements in word order and sentence structure.plagiarismcheck.org · 1 Oct 2026
AI detection: The site claims 99% accuracy in detecting even slight signs of AI.plagiarismcheck.org · 1 Oct 2026
Reports: The product provides interactive results and downloadable reports.plagiarismcheck.org · 1 Oct 2026
Integrations: Listed integrations include Moodle, Google Classroom, Canvas, Blackboard and a Google Docs add-on.plagiarismcheck.org · 1 Oct 2026
Browser access: PlagiarismCheck.org is browser-based and requires no installation.plagiarismcheck.org · 1 Oct 2026
Data handling: The company says it does not keep uploaded writings in its database and that uploaded texts remain confidential.plagiarismcheck.org · 1 Oct 2026
Institutional users: Organizational plans target K-12 schools, higher-education institutions, research institutions and businesses.plagiarismcheck.org · 1 Oct 2026
Academic features: Higher-education customers get grammar, spelling and punctuation checking, AI detection and authorship verification.plagiarismcheck.org · 1 Oct 2026
Support: The company lists support by email and a 24/7 phone number.plagiarismcheck.org · 1 Oct 2026
API limit: The API currently supports only English text and requires submitted text to be at least 80 characters.plagiarismcheck.org · 1 Oct 2026
Company history: PlagiarismCheck.org says it was created in 2011 as an assistance tool for college students and teachers.plagiarismcheck.org · 1 Oct 2026
Usage reach: The homepage reports more than 1,000,000 users and more than 21,000,000 texts checked for plagiarism.plagiarismcheck.org · 1 Oct 2026