Isgen
Isgen is the leading AI Detector for detecting text written by Openai's GPT-5, Chat-GPT, Claude, Gemini, Deepseek a
Isgen is the leading AI Detector for detecting text written by Openai's GPT-5, Chat-GPT, Claude, Gemini, Deepseek and other open-source models
Free tier
See the source
“The Freemium plan allows up to 12,000 words per month for free.”isgen.ai · read 2026-09-28
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Pricing
What it is
Isgen is the leading AI Detector for detecting text written by Openai's GPT-5, Chat-GPT, Claude, Gemini, Deepseek and other open-source models
What people use it for
Categories
Alternatives compared
See all 9 Isgen alternatives →Same job, different terms. Unverified rows stay marked — we do not fill them in.
| Tool | Free tier | Card | Watermark | From |
|---|---|---|---|---|
| Isgenthis tool | 12000 word a month | — | — | Not published |
| AIDetector | Yes | Not required | — | Not published |
| GPTZero | Yes | — | — | Not published |
| Quetext | Yes | — | — | Not published |
| SuperHumanizer | Yes | — | — | Not published |
| Originality.AI | — | — | — | Not published |
| Scribbr | — | — | — | Not published |
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