Widely used for quick AI text detection, but less comprehensive for enterprise plagiarism and code auditing.
Copyleaks records 2,402,494 monthly visits with -14.1% month-over-month growth and Paid, Contact for Pricing pricing. Link Shield records 497 monthly visits with +4,041.7% growth and Free Trial, Paid pricing.

AI-assisted URL threat detection API for developers
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | copyleaks.com | linkshieldapi.com |
| Pricing Model | Paid, Contact for Pricing | Free Trial, Paid |
| Monthly Visits | 2.4M (2,402,494) | 497 (497) |
| MoM Traffic Delta |
|---|
| -394.39K (-14.1%) |
| +485 (+4,041.7%) |
| Primary Market & Share | 🇺🇸 United States (53.2%) | 🇮🇩 Indonesia (100%) |
|---|
| Direct Visits / mo | 758.5K | 198 |
|---|
| User Rating | 4.4 | 4 |
|---|
| Supported Platforms | Website | Website |
|---|

Enterprise AI and plagiarism detection for content integrity
Identifies AI-generated text across 30+ languages and leading LLMs, with reported accuracy above 99% on internal English test sets.
Searches 60 trillion websites, 16,000+ open-access journals and internal repositories to catch paraphrasing and hidden copying.
Extends detection to AI-generated video, audio and images so teams can verify content beyond text alone.
A scalable API and workflow integrations automate content analysis inside LMS platforms, publishing tools and enterprise systems.

AI-assisted URL threat detection API for developers
Every scan returns a numeric score plus explanatory reasons, so you can act on a link with confidence rather than trusting an opaque verdict.
Short links and redirect chains are unwrapped and followed, revealing hidden final destinations before they reach your users.
Links are classified across phishing, malware, scam, adult, dating, gambling, crypto and spam, supporting nuanced content policies.
Send batches of URLs in a single request and receive per-link risk scores, which suits high-volume pipelines and link shorteners.
Widely used for quick AI text detection, but less comprehensive for enterprise plagiarism and code auditing.
Stronger focus on educational integrity reporting, though it lacks Copyleaks' deep enterprise compliance workflows.
#2
SpecialistIncludes expert human proofreading alongside plagiarism checks, but lacks native automated AI content detection.
#3SpecialistCombines AI detection with built-in text humanization, whereas Copyleaks focuses strictly on rigorous integrity verification.

Offers robust combined AI detection and plagiarism checking, but lacks Copyleaks' extensive enterprise API ecosystem.

Features detailed sentence-level analysis for multilingual text, but lacks Copyleaks' broad enterprise feature set.

Detect AI-generated text and images with benchmark-tested accuracy
AI detector that highlights evidence, not just a score

Multi-modal AI detection API that flags synthetic images, text, audio, video and deepfakes

Accuracy-first plagiarism and AI detection for schools, universities, and teams

Search foundation built from embeddings, rerankers, and reader APIs

Check plagiarism, detect AI text and polish your writing in one place
Widely used for quick AI text detection, but less comprehensive for enterprise plagiarism and code auditing.
Stronger focus on educational integrity reporting, though it lacks Copyleaks' deep enterprise compliance workflows.
SpecialistIncludes expert human proofreading alongside plagiarism checks, but lacks native automated AI content detection.
SpecialistCombines AI detection with built-in text humanization, whereas Copyleaks focuses strictly on rigorous integrity verification.
Offers robust combined AI detection and plagiarism checking, but lacks Copyleaks' extensive enterprise API ecosystem.
Features detailed sentence-level analysis for multilingual text, but lacks Copyleaks' broad enterprise feature set.
Detect AI-generated text and images with benchmark-tested accuracy
AI detector that highlights evidence, not just a score
Multi-modal AI detection API that flags synthetic images, text, audio, video and deepfakes
Accuracy-first plagiarism and AI detection for schools, universities, and teams
Check plagiarism, detect AI text and polish your writing in one place