Best isFake.ai Alternatives for AI Detection
30 AI tools that can replace isFake.ai for detecting AI-written content, ranked by how closely they match. The percentage is a match score, not a popularity score.
Replacing: isFake.ai — isFake.ai is a tool designed for detecting AI-generated content across different media typInput: text, images, audio, video · Output: data
1
ZeroGPT processes text quickly to detect AI-generated content
Input: text, images, video, documents · Output: text
From $7.99/mo
90%Near drop-in replacement · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals10/10
- Feature description similarity10/20
Shared goals 2 of the 2 we tag isFake.ai for
AI DetectionFake Image Detection
Also tagged for
Plagiarism 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
87%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity11/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Also tagged for
Plagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
3
87%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals10/10
- Feature description similarity7/20
Shared goals 2 of the 2 we tag isFake.ai for
AI DetectionFake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
4
ZeroGPT Plus can detect if text came from AI with high accuracy
Input: text, documents · Output: text
Free planFrom $9.9/mo
86%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity9/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Also tagged for
Plagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
5
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
84%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity8/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Also tagged for
Plagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
6
The free plan hands you 5,000 characters per check
Input: text, documents · Output: text
Free planFrom $7/mo
85%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity9/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
7
Sensity AI is a forensic deepfake detection service that analyzes videos, images and audio for signs of AI manipulation.
Input: images, audio, video, web pages · Output: documents
APITeams
91%Near drop-in replacement · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals10/10
- Feature description similarity11/20
Shared goals 2 of the 2 we tag isFake.ai for
AI DetectionFake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
8
86%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity10/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
9
Dechecker AI breaks down AI detection differently
Input: text, documents · Output: text
Free planFrom $5/mo
84%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity8/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Also tagged for
Plagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
10
Reality Defender detects deepfakes and AI-manipulated media across audio, video and images.
Input: images, audio, video · Output: data
Free planAPITeams
90%Near drop-in replacement · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals10/10
- Feature description similarity10/20
Shared goals 2 of the 2 we tag isFake.ai for
AI DetectionFake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
11
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
82%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity6/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Also tagged for
Humanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
12
Undetectable AI bundles an AI text detector, an AI humanizer and an AI image detector into one account.
Input: text, images, documents · Output: text, data
Free trialFrom $5/moAPIBrowser extensionTeams
88%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals10/10
- Feature description similarity8/20
Shared goals 2 of the 2 we tag isFake.ai for
AI DetectionFake Image Detection
Also tagged for
Humanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
13
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
88%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals10/10
- Feature description similarity8/20
Shared goals 2 of the 2 we tag isFake.ai for
AI DetectionFake Image Detection
Also tagged for
Plagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
14
Copyleaks is a content authenticity platform that checks whether text was written by AI and whether it copies existing sources.
Input: text, images, video, documents, code · Output: data
From $13.99/moAPI
87%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals10/10
- Feature description similarity7/20
Shared goals 2 of the 2 we tag isFake.ai for
AI DetectionFake Image Detection
Also tagged for
Plagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
15
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
87%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals10/10
- Feature description similarity7/20
Shared goals 2 of the 2 we tag isFake.ai for
AI DetectionFake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
16
Job applications get filtered by AI detection systems now
Input: text, documents · Output: text
Free plan
82%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity6/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
17
AI Content Blocker for YouTube, Social Feeds & Google AI Overviews
Input: video, web pages · Output: data
80%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity4/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
18
Hive Moderation is an AI content moderation provider built for trust and safety teams at enterprise scale.
Input: text, images, audio, video · Output: data
APITeams
86%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals10/10
- Feature description similarity6/20
Shared goals 2 of the 2 we tag isFake.ai for
AI DetectionFake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
19
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
85%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals10/10
- Feature description similarity5/20
Shared goals 2 of the 2 we tag isFake.ai for
AI DetectionFake Image Detection
Also tagged for
Plagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
20
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
80%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity4/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
21
Pindrop is an enterprise deepfake detection and identity verification system that watches live phone calls, video meetings and contact center traffic for synthetic voices, fake faces and fraudulent...
Input: audio, video · Output: data
Teams
84%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity7/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
22
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
81%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity5/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Also tagged for
Plagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
23
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
80%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Built for AI Detection (its core category)70/70
- Shares isFake.ai's other goals6/10
- Feature description similarity4/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
24
Illuminarty detects whether an image or a piece of text was created by AI.
Input: text, images · Output: data
Free planFrom $10/moAPI
64%Partial replacement — covers the main need with gaps
00
How the score adds up
- Offers AI Detection as a secondary capability42/70
- Shares isFake.ai's other goals8/10
- Feature description similarity15/20
Shared goals 2 of the 2 we tag isFake.ai for
AI DetectionFake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
25
Rephrase until it sounds right
Input: text, images, documents · Output: text, images, documents, slides
Free planFrom $19.95/mo
51%Limited overlap
00
How the score adds up
- Offers AI Detection as a secondary capability42/70
- Shares isFake.ai's other goals4/10
- Feature description similarity5/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Also tagged for
Grammar CheckingRewritingSummarizingWritingPlagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
26
Writing confidence that follows you everywhere
Input: text · Output: text
Free planFrom $12/mo
50%Limited overlap
00
How the score adds up
- Offers AI Detection as a secondary capability42/70
- Shares isFake.ai's other goals4/10
- Feature description similarity4/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Also tagged for
Grammar CheckingRewritingWritingPlagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
27
A content marketer at a SaaS company drafts blog posts using AI writing tools, then faces a problem
Input: text · Output: text
Free plan
50%Limited overlap
00
How the score adds up
- Offers AI Detection as a secondary capability42/70
- Shares isFake.ai's other goals4/10
- Feature description similarity5/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Also tagged for
Humanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
28
Humaniser processes AI-generated text through pattern analysis and linguistic transformation to make it appear human-written
Input: text · Output: text
Free planFrom $5/moTeams
51%Limited overlap
00
How the score adds up
- Offers AI Detection as a secondary capability42/70
- Shares isFake.ai's other goals4/10
- Feature description similarity6/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Also tagged for
Humanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
29
UnGPT takes AI-generated text and rewrites it to mimic natural human writing patterns that slip past detection algorithms
Input: text · Output: text
From $9.92/moBrowser extension
53%Limited overlap
00
How the score adds up
- Offers AI Detection as a secondary capability42/70
- Shares isFake.ai's other goals4/10
- Feature description similarity7/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Also tagged for
Grammar CheckingWritingSEO WritingPlagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
30
50%Limited overlap
00
How the score adds up
- Offers AI Detection as a secondary capability42/70
- Shares isFake.ai's other goals4/10
- Feature description similarity5/20
Shared goals 1 of the 2 we tag isFake.ai for
AI Detection
Also tagged for
Essay WritingGrammar CheckingRewritingWritingPlagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
Can it really replace isFake.ai for detecting ai-written content? Vote on each alternative — no account needed. Votes gently reorder the list; they never change the match score.
Missing an alternative for detecting AI-written content? Suggest it
At a glance: top isFake.ai alternatives for AI Detection
| Tool | Match | Input | Output | Pricing | Free plan | Rating | Category |
|---|---|---|---|---|---|---|---|
| ZeroGPT | 90% | text, images, video, documents | text | From $7.99/mo | No | — | AI Detector |
| Originality.AI | 87% | text, documents, web pages | text, data | From $12.95/mo | Yes | — | AI Detector |
| Slop Or Not AI | 87% | text, images | data | From $5/mo | No | — | AI Detector |
| ZeroGPT Plus | 86% | text, documents | text | From $9.9/mo | Yes | — | AI Detector |
| GPTZero | 84% | text, documents | text, data | From $12.99/mo | Yes | — | AI Detector |
| Detecting-AI.com | 85% | text, documents | text | From $7/mo | Yes | — | AI Detector |
Frequently asked
What is the best isFake.ai alternative for detecting AI-written content?
ZeroGPT (90% match) is the closest alternative to isFake.ai for detecting AI-written content. Originality.AI (87% match) and Slop Or Not AI (87% match) come next.
Is there a free alternative to isFake.ai for detecting AI-written content?
Yes. 21 of the 30 ranked alternatives have a free plan or free tier, including Originality.AI, ZeroGPT Plus, GPTZero.
How is the match percentage calculated?
It measures how much of isFake.ai's job a tool can take over for detecting AI-written content: 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 isFake.ai's job each tool can take over when the goal is detecting AI-written content: 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.