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Kazan SEO AI Detector vs AI Detector by Plagium. Side by side.

Compare pricing, strengths, and use cases so it is easier to pick the right fit.

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Kazan SEO AI Detector

Best overall

AI Detector by Plagium

For everyday users who need a free, no-strings-attached AI detector with bulk scanning, Kazan SEO AI Detector is the clear winner. Plagium offers a more polished experience with combined plagiarism checks, but its free tier is severely limited. The biggest difference is price: Kazan is completely free, while Plagium forces you to pay after 10 searches.

Kazan SEO AI Detector

#2102 of 3,826 Web

AI Detector by Plagium

10 free searches per day, paid plans available #2302 of 3,826 Web

Scores at a glance

Kazan SEO AI DetectorAI Detector by PlagiumPractical Versatility

Onboarding Ease

Ecosystem Fit

Market Value

Choose Kazan SEO AI Detector if

You're a content manager or SEO specialist who needs to check dozens of blog posts for AI content every week
You want a free tool that works immediately without creating an account
You need to scan entire websites by uploading a CSV of URLs
You're okay with occasional false alarms on technical writing and don't need mobile access

Choose AI Detector by Plagium if

You need both AI detection and plagiarism checking in one report
You only check a few short texts per day and can live with the free tier's limits
You work with content in multiple languages (e.g., Spanish, French, German)
You're willing to pay a small fee for a more polished, faster analysis on small texts

Key differences

Kazan is 100% free; Plagium limits you to 10 free searches per day
Kazan supports bulk URL scanning from CSV; Plagium does not
Plagium combines AI detection with plagiarism cross-referencing; Kazan does not
Kazan has no mobile app or API; Plagium also lacks both
Plagium works with multiple file types (PDF, DOCX); Kazan only accepts text, URLs, CSV, and TXT
Kazan includes semantic SEO analysis; Plagium focuses purely on detection and plagiarism

Facts side by side

	Kazan SEO AI Detector	AI Detector by Plagium
Free plan
Mobile app
API access

Kazan SEO AI Detector: strengths & weaknesses

Completely free with no sign-up or payment needed
Bulk URL scanning from a CSV file — great for checking a whole website at once
Includes semantic keyword analysis, so you get SEO insights alongside detection
Very simple interface: paste text or upload a file, get a score in seconds
No mobile app — you must use a desktop browser
No API, so you can't automate checks or integrate with other tools
High false-positive rate on technical or scientific writing, so it may flag your research paper as AI
Occasional server downtime during busy hours

AI Detector by Plagium: strengths & weaknesses

Checks for AI and plagiarism at the same time — saves you a second tool
Very fast on small texts (under 1,000 words)
Supports multiple languages, so it works for non-English content
Pay-as-you-go option means you don't have to commit to a subscription
Free tier only gives 10 searches per day with very short character limits
Can flag formal human writing (like legal documents) as AI-generated
No mobile app and no API, so you're stuck on the website
Interface looks a bit outdated and can be confusing for first-time users

Common questions

Is Kazan SEO AI Detector better than AI Detector by Plagium for checking student essays?

For student essays, Plagium is better because it also checks for plagiarism, which is often needed alongside AI detection. Kazan is free but has a high false-positive rate on academic writing, so you might wrongly accuse a student of using AI.

Can I use either tool on my phone?

No. Neither tool has a mobile app, and their websites are not optimized for mobile browsers. You'll need a laptop or desktop computer to use them comfortably.

Which tool is easier for a non-technical person to start using?

Kazan SEO AI Detector is easier because you don't need to create an account — just go to the website, paste text, and get a score. Plagium requires registration and has a more cluttered interface.

Do these tools work for checking AI-generated code or technical documentation?

Kazan has a high false-positive rate on technical text, so it's unreliable for code or scientific writing. Plagium is slightly better but still flags formal writing. Neither is recommended for technical content.

Which tool is worth paying for if I need to check content daily?

Neither is worth paying for if you only need AI detection — Kazan is free and sufficient. If you also need plagiarism checks, Plagium's paid plans are reasonable, but consider a dedicated plagiarism tool like Turnitin instead.

Kazan SEO AI Detector is the best free choice for bulk AI detection; Plagium adds plagiarism checks but limits free usage to just 10 searches per day.

If you just need a free, straightforward AI detector for everyday use — especially for bulk checking — go with Kazan SEO AI Detector. If you also need plagiarism checks or work with multiple languages, Plagium is a decent option, but be ready to pay after your first 10 searches. Neither is perfect, but for most non-technical users, Kazan's zero cost and simplicity win.

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Detail pages: Kazan SEO AI Detector · AI Detector by Plagium

Kazan SEO AI Detector

AI Detector by Plagium

Free plan

Mobile app

API access