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Isgen — AI for Education & E-learning

Get a quick estimate of the probability that a text was written by AI. Paste your text and receive a simple percentage score in seconds.

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Free Plan
Free plan verified · free AI tools for Educators
7.3 Zekai
A simple first-pass check.
AI for Education & E-learning
Ease of Use
9.6
Accuracy
6.2
Value
8.2
Time Saving
5.4
AI DetectorText AnalysisFree ToolNo RegistrationContent Verification
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Zekai Verdict

What is it?
Isgen is a free web-based tool designed to analyze a piece of text and calculate the likelihood that it was generated by an AI model.
Best for
Editors
Price
Free plan
Zekai Score
7.3/10
Hand-scored by Zekai

Top AI for Education & E-learning picks

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⚡ Quick answer

Isgen is a free online tool that estimates whether a piece of text was written by AI. You paste text into the website, and it provides a percentage score indicating the probability of AI generation. It is a simple, fast tool for a preliminary check.

📖 About Isgen

Isgen is a free web-based tool designed to analyze a piece of text and calculate the likelihood that it was generated by an AI model. You paste your content into the tool, and it returns a single percentage score indicating the AI probability.

How It Works

Your workflow, automated

1
Copy your text
Select and copy the text you want to analyze from its source document or webpage.
2
Paste into Isgen
Navigate to the Isgen website and paste the copied text into the provided input box.
3
Review the score
Click the 'Check' button to receive an overall percentage score and see which sentences are highlighted as likely AI-generated.
Ready to automate your workflow with Isgen?
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Real Impact

Before & After

❌ Before

You're unsure if a piece of text was written by a person or an AI.

Uncertainty
✅ After

You have a probability score to help inform your judgment about the text's origin.

Probability Score
AI Prompts

Prompts for Educators

Prompt 01 Lesson Activity Generation Prompt
[[Paste your voice-to-text notes from Step 1 here]]
Prompt 02 NGSS-Aligned Lesson Plan Prompt
Act as a middle school science curriculum developer. **Task:** Generate a 5E lesson plan for a 7th-grade science class on photosynthesis. The lesson should be aligned with NGSS standard MS-LS1-6. The class has 50 minutes and access to 1-to-…
Prompt 03 Prompt to Ask for Sources
Please provide the sources for the information you just gave me. List at least three specific, publicly accessible URLs.
See all 35 AI prompts for Educators →
Social Proof

Trusted by professionals

Ease of Use
9.6
Accuracy
6.2
Value
8.2
Time Saving
5.4
The decision

Is Isgen worth it?

Built for
Educators, editors, content managers, students, and anyone needing to assess the originality of a piece of text.
Effort to adopt
Very Simple
Who It's For

Why Education & E-learning choose this tool

🎯
Built for
Editors
In-Depth Overview
As AI-generated content becomes more common, you may need a way to perform a quick check on a text's origin. Isgen addresses this by providing a simple, accessible first-pass analysis. You just copy and paste text into the browser to get an immediate probability score, with no need to sign up or install anything. The tool also highlights specific sentences it suspects are AI-generated, offering a bit more detail than just a single number. It's designed for anyone who handles text and needs a preliminary sense of its authenticity, such as educators reviewing student submissions or editors checking freelance work. However, it's critical to understand that this tool, like all AI detectors, provides a probability, not a certainty. The technology is imperfect, and false positives on human writing are a documented problem, particularly affecting individuals writing in a second language. Therefore, an Isgen score should be considered a starting point for further inquiry, not a final verdict.

Key Use Cases

🎯
Content Editor
📋
✓ Pros
• Extremely easy to use: just copy and paste
• Provides results almost instantly
• Free of charge with no usage limits mentioned
• Sentence-level highlighting gives more context
• No need to create an account or provide personal data
· Cons
• Detection is probabilistic and can be inaccurate.
• Risk of false positives, which can unfairly flag human writing, especially from non-native speakers.
• A score is not definitive proof and should never be the sole basis for an accusation.
• Lacks advanced features like file uploads, URL scanning, or detailed reports.
⚡ Editorial Verdict

Isgen is a fast, no-frills tool for getting a basic probability score on a text's AI origins. Its simplicity is its main strength, but remember that AI detection is probabilistic. A score must never be used on its own to accuse anyone, as false positives on genuine human writing are a known issue.

Questions & Answers

Frequently asked questions

Can I use an Isgen score to prove a student or writer cheated?

+
No. Isgen and other AI detectors provide a probability score, not a definitive judgment. These tools are known to produce false positives and should only be used as one of many signals in a broader evaluation, never as sole evidence for an accusation.

Last reviewed:

Plans & Pricing

Isgen pricing and plans

Prices and features are updated regularly but can change at any time — always confirm on the official website. Some links on this page are affiliate links.

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AI Directory

About Isgen

Full Description

Isgen is a free web-based tool designed to analyze a piece of text and calculate the likelihood that it was generated by an AI model. You paste your content into the tool, and it returns a single percentage score indicating the AI probability.

Editorial Verdict

Isgen is a fast, no-frills tool for getting a basic probability score on a text's AI origins. Its simplicity is its main strength, but remember that AI detection is probabilistic. A score must never be used on its own to accuse anyone, as false positives on genuine human writing are a known issue.

Last reviewed:
Disclaimer
Zekai is an independent AI tools directory. We are not affiliated with, endorsed by, or officially connected to Isgen unless clearly stated. All product names, logos, and brands are the property of their respective owners and are used for identification purposes only. The information on this page — including pricing, features, and availability — is general information, may have changed since our last review, and is not professional advice. Zekai Scores and verdicts are our editorial opinion. Some outbound links are affiliate links that may earn us a commission at no extra cost to you. Spotted outdated or incorrect information? Request a correction →
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