DetectGPT alternatives

DetectGPT is a free, browser-based checker that estimates the AI share of pasted text, highlights the passages that read most like a language model, and runs plagiarism similarity checks on up to 3,000 words per run. When choosing an alternative, weigh input limits, file and URL support, API or extension needs, plagiarism sources, and whether a free tier or a paid plan fits your volume.

Comparing with

DetectGPT

Free AI text checker for ChatGPT, Claude and Gemini writing

FreeWeb

View DetectGPT

Quick picks

All 15 alternatives

Ranked by how well each one does what DetectGPT does.

1
DetectordeiaSame job
Free AI Content Detector
Pick it if you want sentence-level rewriting suggestions, a browser extension, and free checks with no registration.
- Free plan
- Web
- Browser extension
Drop-in replacementFreeSimilar price to DetectGPTView Detectordeia
2
MyDetectorSame job
Free AI Detector and Humanizer
Pick it if you need to upload PDF, Word, or PowerPoint files and compare the AI and human parts side by side.
- Free plan
- Web
Drop-in replacementFreeCosts more than DetectGPTView MyDetector
3
AIDetectPlusSame job
Only AI Detector and Humanizer That Works With Essays, Blogs, and Papers!
Pick it if you want AI detection paired with humanization in a chosen tone, plus chat with uploaded PDFs and API access on enterprise plans.
- Free plan
- API
- Web
Drop-in replacementPaidSimilar price to DetectGPTView AIDetectPlus
4
ZeroGPT.CC - AI Content Detector
Same job
Detect AI-Generated Text with ZeroGPT.cc
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Pick it if you need a free API for automated checks, sentence-level flags, and a readability score, with texts up to 1,000 words per check.
- Free plan
- API
- Web
Drop-in replacementFreeSimilar price to DetectGPT
View ZeroGPT.CC - AI Content Detector
5
AI Checker Tool
Same job
Accurately detect AI-generated content with our free tool.
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Pick it if you want detector consensus, spell and fact checking, URL analysis, exportable PDF reports, and API access.
- Free plan
- API
- Web
Drop-in replacementFreeSimilar price to DetectGPT
View AI Checker Tool
6
Detecting-AI.com
Same job
Detect and Flag AI-Generated Content
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Pick it if you plan to integrate detection through a REST API or MCP server, or you need to check TXT, PDF, or DOCX uploads.
- Free plan
- API
- Web
Drop-in replacementFreeSimilar price to DetectGPT
View Detecting-AI.com
7
GPTZero
Same job
Decoding AI Text with Lightning Precision!
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Pick it if you review student or professional writing and need writing process replay, LMS integrations, or a Chrome extension for Google Docs.
- Free plan
- API
- Web
- Browser extension
Drop-in replacementFreeCosts more than DetectGPT
View GPTZero
8
AI Plagiarism Checker
Same job
Detect AI-Generated or Duplicated Content
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Pick it if you want AI detection together with duplicated-content matching, authorship verification, and LMS or Google Docs integration.
- Free plan
- API
- Web
- Browser extension
Drop-in replacementPaidCosts more than DetectGPT
View AI Plagiarism Checker
9
AI Text Detector
Same job
Accurate AI Text Detection Tool
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Pick it if you want a combined verdict from two detection engines with a per-engine breakdown and a built-in rewriting tool.
- Free plan
- Web
Drop-in replacementFreeCosts more than DetectGPT
View AI Text Detector
10
ZeroGPT
Same job
Detect AI-Generated Content with ZeroGPT
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Pick it if you want paraphrasing or humanizing, batch file upload, automatic PDF reports, and API access in one tool.
- Free plan
- API
- Web
Drop-in replacementFree
View ZeroGPT
11
Plagium AI Detector
Same job
Detect AI-Generated Text with Plagium AI Detector
Claim this listing
Pick it if you need plagiarism search across web, news, and academic sources, with matched links and a shareable authenticity certificate.
- Free plan
- API
- Web
Drop-in replacementPaidSimilar price to DetectGPT
View Plagium AI Detector
12
AI Detector Online
Same job
Ensure Content Authenticity with AI Detection Tools
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Pick it if you also need to check whether images are AI-generated, and you want to use the tool without creating an account.
- Free plan
- Web
Drop-in replacementFreeSimilar price to DetectGPT
View AI Detector Online
13
GPTKit
Same job
Accurately detect human-written and AI-generated text
Claim this listing
Pick it if you run a team that needs to share detection credits, and you want results from six detection methods for English text.
- Free plan
- Web
Drop-in replacementFreeSimilar price to DetectGPT
View GPTKit
14
Checkfor
Same job
Instantly detect AI-generated text with checkfor.ai
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Pick it if you need to check text inside Google Docs or web pages through a browser extension, or run high-volume checks through an API.
- Free plan
- API
- Web
- Browser extension
Drop-in replacementFreeSimilar price to DetectGPT
View Checkfor
15
AI Detector WriterSame job
Free AI Detector with no limits
Pick it if you need to batch-check .txt, .md, or .csv files, get a PDF report, and check text in multiple languages.
- Free plan
- Web
Covers most of itFreeSimilar price to DetectGPTView AI Detector Writer

DetectGPT and its top 5, side by side

What we compared	DetectGPTThis product	Detectordeia#1	MyDetector#2	AIDetectPlus#3	ZeroGPT.CC - AI Content Detector #4	AI Checker Tool #5
What it does	Free AI text checker for ChatGPT, Claude and Gemini writing	Free AI Content Detector	Free AI Detector and Humanizer	Only AI Detector and Humanizer That Works With Essays, Blogs, and Papers!	Detect AI-Generated Text with ZeroGPT.cc	Accurately detect AI-generated content with our free tool.
Fit for DetectGPT users	—	Drop-in	Drop-in	Drop-in	Drop-in	Drop-in
Pricing	Free	Free	Free	Paid	Free	Free
Free plan	Yes	Yes	Yes	Yes	Yes	Yes
API	No	No	No	Yes	Yes	Yes
Open source	No	No	No	No	No	No
Platforms	Web	Web, Browser extension	Web	Web, API	Web, API	Web, API

Questions about DetectGPT alternatives

What are the best alternatives to DetectGPT?

On AINave, the closest matches are Detectordeia, MyDetector and AIDetectPlus.

Is there a free alternative to DetectGPT?

Yes. 15 alternatives have a free plan, including Detectordeia, MyDetector and AIDetectPlus.

Which DetectGPT alternatives have an API?

9 alternatives have an API, including AIDetectPlus, ZeroGPT.CC - AI Content Detector and AI Checker Tool.

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