Best Free ZeroGPT Plus Alternatives
21 alternatives to ZeroGPT Plus with a free plan or free tier, ranked by how closely they match. The percentage is a match score, not a popularity score.
Replacing: ZeroGPT Plus — ZeroGPT Plus can detect if text came from AI with high accuracyInput: text, documents · Output: text
1
Dechecker AI breaks down AI detection differently
Input: text, documents · Output: text
Free planFrom $5/mo
90%Near drop-in replacement · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals25/25
- Feature description similarity10/20
Shared goals 3 of the 3 we tag ZeroGPT Plus for
AI DetectionPlagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
2
Developers get API access for building AI detection into their own apps
Input: text, documents, web pages · Output: text, data
Free planFrom $12.95/mo
83%Strong alternative · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals18/25
- Feature description similarity10/20
Shared goals 2 of the 3 we tag ZeroGPT Plus for
AI DetectionPlagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
3
Used by over 10 million teachers and students across more than 100 countries, GPTZero detects AI-generated text across major language models while providing a suite of writing verification tools
Input: text, documents · Output: text, data
Free planFrom $12.99/moAPIBrowser extensionTeams
82%Strong alternative · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals18/25
- Feature description similarity9/20
Shared goals 2 of the 3 we tag ZeroGPT Plus for
AI DetectionPlagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
4
Scribbr AI Detector is a free checker that estimates whether a piece of writing was produced by an AI model.
Input: text · Output: data
Free plan
88%Strong alternative · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals25/25
- Feature description similarity8/20
Shared goals 3 of the 3 we tag ZeroGPT Plus for
AI DetectionPlagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
5
Detect.ai combines an AI content detector with a humanizer in a single browser tool.
Input: text, documents · Output: text
Free planFrom $15.99/moMobile app
79%Strong alternative · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals18/25
- Feature description similarity6/20
Shared goals 2 of the 3 we tag ZeroGPT Plus for
AI DetectionHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
6
Winston AI is an AI content detector and plagiarism checker built for education, SEO, and writing.
Input: text, images, documents · Output: data
Free planFrom $10/moAPITeams
84%Strong alternative · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals18/25
- Feature description similarity10/20
Shared goals 2 of the 3 we tag ZeroGPT Plus for
AI DetectionPlagiarism Checking
Also tagged for
Fake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
7
The free plan hands you 5,000 characters per check
Input: text, documents · Output: text
Free planFrom $7/mo
76%Strong alternative · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals11/25
- Feature description similarity10/20
Shared goals 1 of the 3 we tag ZeroGPT Plus for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
8
Pangram Labs makes an AI detector that checks whether text was written by a person or generated by a language model.
Input: text, images, documents · Output: data
Free planFrom $20/moAPIBrowser extension
80%Strong alternative · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals18/25
- Feature description similarity7/20
Shared goals 2 of the 3 we tag ZeroGPT Plus for
AI DetectionPlagiarism Checking
Also tagged for
Fake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
9
73%Partial replacement — covers the main need with gaps · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals11/25
- Feature description similarity7/20
Shared goals 1 of the 3 we tag ZeroGPT Plus for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
10
Job applications get filtered by AI detection systems now
Input: text, documents · Output: text
Free plan
73%Partial replacement — covers the main need with gaps · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals11/25
- Feature description similarity7/20
Shared goals 1 of the 3 we tag ZeroGPT Plus for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
11
isFake.ai is a tool designed for detecting AI-generated content across different media types, including text, images, audio, and videos. It employs proprietary algorithms to analyze for characteristic
Input: text, images, audio, video · Output: data
Free planFrom $3.99/mo
76%Strong alternative · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals11/25
- Feature description similarity9/20
Shared goals 1 of the 3 we tag ZeroGPT Plus for
AI Detection
Also tagged for
Fake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
12
OmniDetect is an AI content detector that focuses on what to fix before you submit a piece of writing.
Input: text, documents, web pages · Output: text, data
Free planFrom $9.99/mo
71%Partial replacement — covers the main need with gaps · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals11/25
- Feature description similarity5/20
Shared goals 1 of the 3 we tag ZeroGPT Plus for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
13
Sapling AI Detector scores pasted text or uploaded PDF and Word files for the probability that a model wrote it.
Input: text, documents · Output: data
Free planFrom $12/moAPIBrowser extensionTeams
74%Partial replacement — covers the main need with gaps · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals11/25
- Feature description similarity7/20
Shared goals 1 of the 3 we tag ZeroGPT Plus for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
14
AI or Not is an AI detector that checks whether images, text, video, audio and music were generated by AI, and flags deepfakes.
Input: text, images, audio, video · Output: data
Free planFrom $5/moAPITeams
73%Partial replacement — covers the main need with gaps · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals11/25
- Feature description similarity6/20
Shared goals 1 of the 3 we tag ZeroGPT Plus for
AI Detection
Also tagged for
Fake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
15
A content marketer drafts 15 blog posts using AI, then realizes every piece sounds robotic and formulaic
Input: text · Output: text
Free planFrom $7.99/mo
64%Partial replacement — covers the main need with gaps
00
How the score adds up
- Each lists the other's core category39/55
- Covers ZeroGPT Plus's goals21/25
- Feature description similarity5/20
Shared goals 3 of the 3 we tag ZeroGPT Plus for
AI DetectionPlagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
16
Reality Defender detects deepfakes and AI-manipulated media across audio, video and images.
Input: images, audio, video · Output: data
Free planAPITeams
70%Partial replacement — covers the main need with gaps · same core category as ZeroGPT Plus
00
How the score adds up
- Same core category55/55
- Covers ZeroGPT Plus's goals11/25
- Feature description similarity4/20
Shared goals 1 of the 3 we tag ZeroGPT Plus for
AI Detection
Also tagged for
Fake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
17
AI Humanizer by WriteHybrid rewrites AI-generated drafts into natural, human-sounding text while preserving your meaning.
Input: text · Output: text
Free planFrom $19/mo
63%Partial replacement — covers the main need with gaps
00
How the score adds up
- Each lists the other's core category39/55
- Covers ZeroGPT Plus's goals14/25
- Feature description similarity11/20
Shared goals 2 of the 3 we tag ZeroGPT Plus for
AI DetectionHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
18
Rephrase until it sounds right
Input: text, images, documents · Output: text, images, documents, slides
Free planFrom $19.95/mo
60%Partial replacement — covers the main need with gaps
00
How the score adds up
- One lists the other's core category30/55
- Covers ZeroGPT Plus's goals21/25
- Feature description similarity9/20
Shared goals 3 of the 3 we tag ZeroGPT Plus for
AI DetectionPlagiarism CheckingHumanizing Text
Also tagged for
Grammar CheckingRewritingSummarizingWriting
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
19
A content marketer at a SaaS company drafts blog posts using AI writing tools, then faces a problem
Input: text · Output: text
Free plan
60%Partial replacement — covers the main need with gaps
00
How the score adds up
- Each lists the other's core category39/55
- Covers ZeroGPT Plus's goals14/25
- Feature description similarity8/20
Shared goals 2 of the 3 we tag ZeroGPT Plus for
AI DetectionHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
20
When academic research needs to be thorough, cited, and completed quickly, Resea AI autonomously plans and executes deep research tasks while generating reports that read like human writing
Input: text · Output: text
Free planFrom $12/mo
62%Partial replacement — covers the main need with gaps
00
How the score adds up
- Each lists the other's core category39/55
- Covers ZeroGPT Plus's goals14/25
- Feature description similarity9/20
Shared goals 2 of the 3 we tag ZeroGPT Plus for
AI DetectionHumanizing Text
Also tagged for
Essay WritingWritingResearch PapersResearch
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
21
UndetectedGPT is an AI humanizer that rewrites machine-drafted text into natural writing aimed at passing detectors such as GPTZero, Turnitin and Originality.
Input: text, documents · Output: text
Free planFrom $19.99/moAPI
61%Partial replacement — covers the main need with gaps
00
How the score adds up
- Each lists the other's core category39/55
- Covers ZeroGPT Plus's goals14/25
- Feature description similarity9/20
Shared goals 2 of the 3 we tag ZeroGPT Plus for
AI DetectionHumanizing Text
Also tagged for
Rewriting
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
Can it really replace ZeroGPT Plus? Vote on each alternative — no account needed. Votes gently reorder the list; they never change the match score.
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At a glance: top ZeroGPT Plus alternatives
| Tool | Match | Input | Output | Pricing | Free plan | Rating | Category |
|---|---|---|---|---|---|---|---|
| Dechecker AI | 90% | text, documents | text | From $5/mo | Yes | — | AI Detector |
| Originality.AI | 83% | text, documents, web pages | text, data | From $12.95/mo | Yes | — | AI Detector |
| GPTZero | 82% | text, documents | text, data | From $12.99/mo | Yes | — | AI Detector |
| Scribbr AI Detector | 88% | text | data | Free | Yes | — | AI Detector |
| Detect.ai | 79% | text, documents | text | From $15.99/mo | Yes | — | AI Detector |
| Winston AI | 84% | text, images, documents | data | From $10/mo | Yes | — | AI Detector |
Frequently asked
What is the best free ZeroGPT Plus alternative?
Dechecker AI (90% match) is the closest free alternative to ZeroGPT Plus. Originality.AI (83% match) and GPTZero (82% match) come next.
What is the best ZeroGPT Plus alternative for humanizing AI text?
ACE ESSAY ranks first for humanizing AI text at 87% match. See the full list of ZeroGPT Plus alternatives for Humanizing Text.
What is the best ZeroGPT Plus alternative for checking for plagiarism?
Turnitin ranks first for checking for plagiarism at 82% match. See the full list of ZeroGPT Plus alternatives for Plagiarism Checking.
How is the match percentage calculated?
It measures how much of ZeroGPT Plus's job a tool can take over: shared core category, how many of the same use cases it covers and how similar its feature set is. Popularity and ratings never change the percentage; they only break ties in the order. Lists are recomputed nightly and reviewed by editors for the most-visited tools.
How this list is ranked
The match score measures how much of ZeroGPT Plus's job each tool can take over: shared core category, how many of the same use cases it covers, and how similar its feature set is. Popularity and ratings do not change the score; they only break ties in the order.
Lists are recomputed nightly from the live catalog and reviewed by our editors for the most-visited tools. Sponsored placements are marked and sit outside the ranking.