Best Free Detect.ai Alternatives
19 alternatives to Detect.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: Detect.ai — Detect.ai combines an AI content detector with a humanizer in a single browser tool.Input: text, documents · Output: text
1
Dechecker AI breaks down AI detection differently
Input: text, documents · Output: text
Free planFrom $5/mo
89%Strong alternative · same core category as Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals25/25
- Feature description similarity9/20
Shared goals 2 of the 2 we tag Detect.ai for
AI DetectionHumanizing Text
Also tagged for
Plagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
2
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 Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals25/25
- Feature description similarity6/20
Shared goals 2 of the 2 we tag Detect.ai for
AI DetectionHumanizing Text
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
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
90%Near drop-in replacement · same core category as Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals25/25
- Feature description similarity10/20
Shared goals 2 of the 2 we tag Detect.ai for
AI DetectionHumanizing Text
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
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 Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals16/25
- Feature description similarity11/20
Shared goals 1 of the 2 we tag Detect.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.
5
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
84%Strong alternative · same core category as Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals16/25
- Feature description similarity13/20
Shared goals 1 of the 2 we tag Detect.ai for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
6
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
79%Strong alternative · same core category as Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals16/25
- Feature description similarity8/20
Shared goals 1 of the 2 we tag Detect.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.
7
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 Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals16/25
- Feature description similarity9/20
Shared goals 1 of the 2 we tag Detect.ai for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
8
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 Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals16/25
- Feature description similarity14/20
Shared goals 1 of the 2 we tag Detect.ai for
AI Detection
Also tagged for
Fake Image DetectionPlagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
9
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
82%Strong alternative · same core category as Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals16/25
- Feature description similarity11/20
Shared goals 1 of the 2 we tag Detect.ai for
AI Detection
Also tagged for
Fake Image DetectionPlagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
10
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
76%Strong alternative
00
How the score adds up
- Each lists the other's core category39/55
- Covers Detect.ai's goals19/25
- Feature description similarity18/20
Shared goals 2 of the 2 we tag Detect.ai 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.
11
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
79%Strong alternative · same core category as Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals16/25
- Feature description similarity9/20
Shared goals 1 of the 2 we tag Detect.ai for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
12
74%Partial replacement — covers the main need with gaps · same core category as Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals16/25
- Feature description similarity4/20
Shared goals 1 of the 2 we tag Detect.ai for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
13
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
78%Strong alternative · same core category as Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals16/25
- Feature description similarity7/20
Shared goals 1 of the 2 we tag Detect.ai 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.
14
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
72%Partial replacement — covers the main need with gaps
00
How the score adds up
- Each lists the other's core category39/55
- Covers Detect.ai's goals19/25
- Feature description similarity15/20
Shared goals 2 of the 2 we tag Detect.ai for
AI DetectionHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
15
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 Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals16/25
- Feature description similarity3/20
Shared goals 1 of the 2 we tag Detect.ai for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
16
WriteHuman is an AI humanizer that rewrites machine-generated drafts so they read like a person wrote them.
Input: text · Output: text
Free planFrom $12/moAPI
77%Strong alternative
00
How the score adds up
- Each lists the other's core category39/55
- Covers Detect.ai's goals19/25
- Feature description similarity20/20
Shared goals 2 of the 2 we tag Detect.ai for
AI DetectionHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
17
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 Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals16/25
- Feature description similarity6/20
Shared goals 1 of the 2 we tag Detect.ai 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.
18
Reality Defender detects deepfakes and AI-manipulated media across audio, video and images.
Input: images, audio, video · Output: data
Free planAPITeams
74%Partial replacement — covers the main need with gaps · same core category as Detect.ai
00
How the score adds up
- Same core category55/55
- Covers Detect.ai's goals16/25
- Feature description similarity3/20
Shared goals 1 of the 2 we tag Detect.ai 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.
19
StealthWriter is an AI text humanizer with a built-in AI detector.
Input: text · Output: text
Free planFrom $20/moTeams
74%Partial replacement — covers the main need with gaps
00
How the score adds up
- Each lists the other's core category39/55
- Covers Detect.ai's goals19/25
- Feature description similarity17/20
Shared goals 2 of the 2 we tag Detect.ai for
AI DetectionHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
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At a glance: top Detect.ai alternatives
| Tool | Match | Input | Output | Pricing | Free plan | Rating | Category |
|---|---|---|---|---|---|---|---|
| Dechecker AI | 89% | text, documents | text | From $5/mo | Yes | — | AI Detector |
| ZeroGPT Plus | 86% | text, documents | text | From $9.9/mo | Yes | — | AI Detector |
| Scribbr AI Detector | 90% | text | data | Free | Yes | — | AI Detector |
| Originality.AI | 82% | text, documents, web pages | text, data | From $12.95/mo | Yes | — | AI Detector |
| OmniDetect | 84% | text, documents, web pages | text, data | From $9.99/mo | Yes | — | AI Detector |
| GPTZero | 79% | text, documents | text, data | From $12.99/mo | Yes | — | AI Detector |
Frequently asked
What is the best free Detect.ai alternative?
Dechecker AI (89% match) is the closest free alternative to Detect.ai. ZeroGPT Plus (86% match) and Scribbr AI Detector (90% match) come next.
What is the best Detect.ai alternative for humanizing AI text?
UndetectedGPT ranks first for humanizing AI text at 96% match. See the full list of Detect.ai alternatives for Humanizing Text.
How is the match percentage calculated?
It measures how much of Detect.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 Detect.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.