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AI Detector by Plagium vs TextCortex AI Content Detector API. Side by side.

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

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AI Detector by Plagium

Best overall

TextCortex AI Content Detector API

For everyday users who need a quick, no-code way to check if text was written by AI, Plagium is the clear winner—it works in a browser, accepts files, and has a free tier. TextCortex is a developer tool, not for regular people; it requires coding to use and has no mobile app or simple interface. The single biggest difference: Plagium is point-and-click, TextCortex is API-only.

AI Detector by Plagium

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

TextCortex AI Content Detector API

#828 of 3,826 Web

Scores at a glance

AI Detector by PlagiumTextCortex AI Content Detector APIPractical Versatility

Onboarding Ease

Ecosystem Fit

Market Value

Choose AI Detector by Plagium if

You're a student or teacher who needs to quickly check essays for AI use
You run a small blog or newsletter and want to verify your own drafts aren't flagged
You want a single tool that also checks plagiarism alongside AI detection
You prefer a simple copy-paste or file-upload workflow with no setup

Choose TextCortex AI Content Detector API if

You're a developer building a content moderation system for a website or app
You need to process thousands of documents automatically via code
You require detailed sentence-level heatmaps to show users why something was flagged
You're okay with contacting sales for pricing and have a budget for enterprise tools

Key differences

Plagium is a ready-to-use web tool; TextCortex is a developer API that requires coding
Plagium has a free tier (10 searches/day); TextCortex has no published free tier
Plagium checks plagiarism and AI together; TextCortex focuses only on AI detection
Plagium works with file uploads (PDF, DOCX); TextCortex works with raw text via API
TextCortex offers heatmap data for explainability; Plagium gives a simple probability score
Plagium is for individuals; TextCortex is for teams and developers

Facts side by side

	AI Detector by Plagium	TextCortex AI Content Detector API
Free plan
Mobile app
API access

AI Detector by Plagium: strengths & weaknesses

Works right in your browser—no coding or setup needed
Checks both AI and plagiarism at the same time, saving you a second tool
Supports uploading PDFs, Word docs, and text files directly
Free tier gives you 10 searches per day, enough for light use
Free searches have a very low character limit, so long essays get cut off
Sometimes flags formal human writing (like academic papers) as AI-generated
No mobile app, so you can't use it on your phone easily
Interface looks a bit old and clunky compared to newer tools

TextCortex AI Content Detector API: strengths & weaknesses

Detects AI from many different models (GPT, Claude, etc.) and updates frequently
Gives a detailed heatmap showing exactly which sentences look AI-written
Works well with non-English languages, better than most competitors
Requires programming knowledge to use—no web dashboard or drag-and-drop
No mobile app, no browser extension, no simple upload interface
Pricing is hidden; you have to contact sales, which is a hassle for individuals
Can falsely flag technical or dry writing as AI, which is frustrating

Common questions

Is AI Detector by Plagium better than TextCortex AI Content Detector API for checking a student essay?

Yes, Plagium is much better for that. You just paste the essay or upload the file and get a result in seconds. TextCortex requires you to write code to send the text to its API.

Can I use TextCortex AI Content Detector API on my phone?

No. TextCortex has no mobile app and no mobile-friendly interface. You can only use it by writing code on a computer. Plagium also has no mobile app, but you can use its website in a phone browser.

Which tool is cheaper for a regular person?

Plagium is cheaper because it has a free tier and pay-as-you-go plans. TextCortex requires you to contact sales for pricing, which usually means enterprise-level costs.

Do both tools detect ChatGPT and Google Gemini?

Plagium detects common AI models but may miss newer ones. TextCortex claims frequent updates to catch newer LLMs, but you need to code to use it.

Which tool is easier to start using right now?

Plagium. Create an account, paste text, click analyze. TextCortex requires reading API docs, generating a key, and writing code—it's not for non-technical users.

Plagium wins for regular people who want a quick AI check; TextCortex is for developers only.

If you're not a programmer, go with Plagium—it's simple, free to start, and does both AI and plagiarism checks. TextCortex is powerful but only for developers who want to build their own detection system. For everyday use, Plagium is the practical choice.

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Detail pages: AI Detector by Plagium · TextCortex AI Content Detector API

AI Detector by Plagium

TextCortex AI Content Detector API

Free plan

Mobile app

API access