Best Free isFake.ai Alternatives
21 alternatives to isFake.ai with a free plan or free tier, 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
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
- Same core category55/55
- Covers isFake.ai's goals25/25
- 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.
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
82%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Same core category55/55
- Covers isFake.ai's goals16/25
- 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
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
- Same core category55/55
- Covers isFake.ai's goals25/25
- 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.
4
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
- Same core category55/55
- Covers isFake.ai's goals25/25
- 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.
5
ZeroGPT Plus can detect if text came from AI with high accuracy
Input: text, documents · Output: text
Free planFrom $9.9/mo
80%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Same core category55/55
- Covers isFake.ai's goals16/25
- 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.
6
81%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Same core category55/55
- Covers isFake.ai's goals16/25
- 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.
7
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
78%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Same core category55/55
- Covers isFake.ai's goals16/25
- 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.
8
Dechecker AI breaks down AI detection differently
Input: text, documents · Output: text
Free planFrom $5/mo
79%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Same core category55/55
- Covers isFake.ai's goals16/25
- 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.
9
The free plan hands you 5,000 characters per check
Input: text, documents · Output: text
Free planFrom $7/mo
79%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Same core category55/55
- Covers isFake.ai's goals16/25
- 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.
10
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
- Same core category55/55
- Covers isFake.ai's goals25/25
- 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.
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
76%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Same core category55/55
- Covers isFake.ai's goals16/25
- 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
Job applications get filtered by AI detection systems now
Input: text, documents · Output: text
Free plan
77%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Same core category55/55
- Covers isFake.ai's goals16/25
- 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.
13
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
75%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Same core category55/55
- Covers isFake.ai's goals16/25
- 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.
14
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
75%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Same core category55/55
- Covers isFake.ai's goals16/25
- 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.
15
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
75%Strong alternative · same core category as isFake.ai
00
How the score adds up
- Same core category55/55
- Covers isFake.ai's goals16/25
- 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.
16
Illuminarty detects whether an image or a piece of text was created by AI.
Input: text, images · Output: data
Free planFrom $10/moAPI
72%Partial replacement — covers the main need with gaps
00
How the score adds up
- Each lists the other's core category39/55
- Covers isFake.ai's goals19/25
- 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.
17
This tool verifies whether an image was created by artificial intelligence or a human, delivering a confidence score and detailed reasoning in under 10 seconds
Input: images · Output: text
Free planFrom $19/moAPI
50%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers isFake.ai's goals10/25
- Feature description similarity11/20
Shared goals 1 of the 2 we tag isFake.ai for
Fake Image Detection
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
45%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers isFake.ai's goals10/25
- 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.
19
Writing confidence that follows you everywhere
Input: text · Output: text
Free planFrom $12/mo
44%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers isFake.ai's goals10/25
- 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.
20
A content marketer at a SaaS company drafts blog posts using AI writing tools, then faces a problem
Input: text · Output: text
Free plan
44%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers isFake.ai's goals10/25
- 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.
21
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
45%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers isFake.ai's goals10/25
- 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.
Can it really replace isFake.ai? 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 isFake.ai alternatives
| Tool | Match | Input | Output | Pricing | Free plan | Rating | Category |
|---|---|---|---|---|---|---|---|
| Reality Defender | 90% | images, audio, video | data | Free | Yes | — | AI Detector |
| Originality.AI | 82% | text, documents, web pages | text, data | From $12.95/mo | Yes | — | AI Detector |
| Winston AI | 88% | text, images, documents | data | From $10/mo | Yes | — | AI Detector |
| AI or Not | 87% | text, images, audio, video | data | From $5/mo | Yes | — | AI Detector |
| ZeroGPT Plus | 80% | text, documents | text | From $9.9/mo | Yes | — | AI Detector |
| AIScan | 81% | text | text | From $5/mo | Yes | — | AI Detector |
Frequently asked
What is the best free isFake.ai alternative?
Reality Defender (90% match) is the closest free alternative to isFake.ai: Reality Defender detects deepfakes and AI-manipulated media across audio, video and images. Originality.AI (82% match) and Winston AI (88% match) come next.
What is the best isFake.ai alternative for detecting AI-written content?
ZeroGPT ranks first for detecting AI-written content at 90% match. See the full list of isFake.ai alternatives for AI Detection.
How is the match percentage calculated?
It measures how much of isFake.ai'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 isFake.ai'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.