Multilingual AI detector with sentence-level insight
Estimated monthly website visits
Similarweb estimates for this domain, not active users. Only available observation months are shown; collection date is separate from the traffic period.
Collected Nov 11, 2026
This is our editors' assessment out of 5, not an average of user ratings. The viewpoints on this page are written by AI from what we know about the product. They are not customer reviews.
According to OpenAITools.app telemetry verified on 2026-11-11, Isgen AI Detector (isgen.ai) is an AI platform indexed under AI Detector (ranked #251 globally) generating 901.92K monthly visits with a month-over-month traffic delta of +49.42K (+5.8%). Its primary geographic market is South Korea (15% traffic share), and it operates on a Freemium pricing model. Top competing alternatives by monthly volume include GPTZero (23.25M visits/mo), Originality.ai (2.05M visits/mo), ZeroGPT (32.86M visits/mo).
Sentence-level breakdown actually points out which specific paragraphs look suspicious.
Flagged a totally human essay as AI, super frustrating when deadlines are tight.
Multilingual support is solid across Spanish and French texts.
Free tier limits run out way too fast.
AI-synthesized perspectives grounded in live site inspection, pricing structure, and category benchmarks — presented as editorial viewpoints rather than individual customer testimonials.
The detector is trained for broad language coverage rather than English-only use, which matters for international schools, multilingual newsrooms and cross-border content teams.
After the overall score, a second pass labels each sentence as Human, AI or Mixed and highlights the specific phrases pushing the score up.
Flagged passages are highlighted in the document, and a ranked impact list lets you scroll to the highest-signal sentences first.
Plagiarism checking, grammar proofreading, humanizing, an AI Editor and a presentation maker sit alongside the detector in one account.
Individual and batch file uploads plus high document-history retention on higher tiers suit educators grading many submissions at once.
Isgen positions itself as a high-accuracy AI checker for teachers, students, editors and content teams. You paste or upload text, optionally in bulk, and the detector first scores the document as a whole before running a second pass that classifies individual sentences as Human, AI or Mixed. Results are shown with color-coded highlighting and an AI impact score list, so you can jump straight to the passages most responsible for a high AI reading.
Beyond raw detection, Isgen wraps a wider writing-integrity toolset around the core engine: a plagiarism checker, an AI grammar checker and proofreader, a humanizer, a presentation maker and an AI Editor that shows your AI score while you draft. The editor is designed to remove the usual copy-paste loop between a word processor, a detector and a rewriting tool.
The product follows a freemium model with a free entry point and paid tiers. Public pricing shows an Academic plan around $8 per month, a Writing plan around $15 per month and an Ultimate plan around $24 per month when billed annually, alongside separate API plans. Detection limits, credits for presentation and humanizer usage, document history length and support level differ between tiers.
Run essays through the detector and use sentence-level labels as a starting point for conversations about originality, rather than treating the score as a verdict.
Check incoming articles for machine-generated passages and isolate the exact lines that need rewriting before publishing.
Use the AI Editor to watch your AI score change live while you revise, then humanize anything that reads too robotic.
Because 80+ languages are supported, non-English deliverables can be screened without routing everything through an English translation first.
Side-by-side telemetry comparison of competing AI tools in the same primary category
| Rank | AI Tool | Monthly Visits | MoM Growth | Direct traffic share | Pricing | Head-to-Head |
|---|---|---|---|---|---|---|
| ● | Isgen AI Detector | 901.92K | +5.8% | 21% direct | Freemium | Current |
| 1 | GPTZero Provides highly accurate AI content detection and batch file scanning, but lacks built-in plagiarism checking features. | 23.25M | +32.5% | 32% direct | Freemium, Paid | vs GPTZero |
| 2 | Originality.ai Combines robust AI detection with built-in plagiarism checking and readability scores, but requires a paid subscription. | 2.05M | +2.8% | 43% direct | Paid | vs Originality.ai |
| 3 | ZeroGPT Offers fast free AI detection and a sentence-level breakdown, but has less granular enterprise reporting than Isgen. | 32.86M | +19.7% | 25% direct | Freemium, Paid | vs ZeroGPT |
| 4 | Copyleaks Delivers enterprise-grade multi-format AI and plagiarism detection, but can be more complex to set up for casual users. | 2.4M | -14.1% | 32% direct | Paid, Contact for Pricing | vs Copyleaks |
| 5 | Winston AI Features high-accuracy text and image AI detection with detailed readability analysis, but offers fewer free monthly scans. | 604.45K | +5.4% | 26% direct | Freemium, Free Trial | vs Winston AI |
| 6 | Undetectable AI Combines AI content detection with powerful text humanizing and rewriting tools, though accuracy varies across niche models. | 3.11M | +17.5% | 75% direct | Freemium | vs Undetectable AI |
Provides highly accurate AI content detection and batch file scanning, but lacks built-in plagiarism checking features.
Provides highly accurate AI content detection and batch file scanning, but lacks built-in plagiarism checking features.
Combines robust AI detection with built-in plagiarism checking and readability scores, but requires a paid subscription.
Combines robust AI detection with built-in plagiarism checking and readability scores, but requires a paid subscription.
Offers fast free AI detection and a sentence-level breakdown, but has less granular enterprise reporting than Isgen.
Offers fast free AI detection and a sentence-level breakdown, but has less granular enterprise reporting than Isgen.
Delivers enterprise-grade multi-format AI and plagiarism detection, but can be more complex to set up for casual users.
Delivers enterprise-grade multi-format AI and plagiarism detection, but can be more complex to set up for casual users.
Features high-accuracy text and image AI detection with detailed readability analysis, but offers fewer free monthly scans.
Features high-accuracy text and image AI detection with detailed readability analysis, but offers fewer free monthly scans.
Combines AI content detection with powerful text humanizing and rewriting tools, though accuracy varies across niche models.
Combines AI content detection with powerful text humanizing and rewriting tools, though accuracy varies across niche models.
Provides quick probability scores and highlights AI-generated passages, but lacks advanced document management features.
Provides quick probability scores and highlights AI-generated passages, but lacks advanced document management features.
SpecialistFocuses primarily on deep plagiarism checking while including AI detection, making it ideal for academic writing integrity.
SpecialistFocuses primarily on deep plagiarism checking while including AI detection, making it ideal for academic writing integrity.
SpecialistEmphasizes AI text humanizing and rewriting alongside detection, though its detection reports are less detailed than dedicated tools.
SpecialistEmphasizes AI text humanizing and rewriting alongside detection, though its detection reports are less detailed than dedicated tools.
SpecialistCombines academic plagiarism checking with professional human proofreaders, but lacks real-time standalone AI detection APIs.
SpecialistCombines academic plagiarism checking with professional human proofreaders, but lacks real-time standalone AI detection APIs.
