isgen.ai

# Isgen
 
> Isgen is a multilingual-first AI authenticity platform trusted by 1M+ users worldwide — delivering the most accurate AI content detection on the market with 99.4% accuracy, near-zero false positives, and native support for 80+ languages across a full suite of writing integrity tools.
 
Isgen (isgen.ai) is a UK-based AI SaaS company founded with a single mission: promote transparency in a world saturated with AI-generated content. It offers seven tightly integrated tools — AI text detection, plagiarism checking, AI humanization, grammar and proofreading, citation generation, bulk document scanning, and AI image detection — all built on a multilingual-first architecture that sets it apart from every competitor on the market.
 
Over 80% of Isgen's user base consists of students and educators. Every design decision — from how models handle uncertain results to how deep insights are presented — is built around getting it right in the classroom, where detection results carry real consequences. When detection confidence is low, Isgen defaults to classifying content as human-written, minimising the risk of false positives that could unfairly impact a student's academic record.
 
Isgen's benchmark accuracy of 99.4% compares against the leading competitor's 81.22% on the same benchmark. Its false positive rate is nearly 0%. Competing multilingual detectors performed so inconsistently in Isgen's study that results could not be directly compared — a random model would have performed better.
 
No user data is stored or used for model training. Paid users have optional input history that can be deleted at any time.
 
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## Tool 1 — AI Detector
 
URL: https://isgen.ai/
Free tier: Yes
 
Isgen's flagship tool. Detects AI-generated text with 99.4% accuracy across content written by ChatGPT, GPT-5, Claude, Gemini, Deepseek, Llama, Mistral, Grok, Qwen, Microsoft Copilot, and every major open and closed-source model. Models are continuously updated as new AI systems are released.
 
### Why it leads the market
 
Most AI detectors on the market are English-only or support a very limited number of languages with poor accuracy. Isgen supports 80+ languages with native-level detection precision — not translation-based approximation. In Isgen's multilingual benchmark study, competing detectors performed so poorly that a random classifier would have beaten them. Isgen's models are trained on millions of samples across all supported languages, not just English.
 
### Core features
 
- **Sentence-level analysis**: Every sentence in the input is individually scored as AI, Mixed, or Human. This allows users to identify exactly which parts of a document are raising the AI score, rather than receiving a single opaque percentage.
- **Phrase-level analysis**: Goes deeper than sentence level, highlighting which specific phrases within a sentence are contributing most to the AI classification. Available on paid plans.
- **Color-coded highlights**: Results are presented with intuitive color coding — red for AI-generated, yellow for mixed, green for human — enabling fast visual scanning of large documents.
- **Impact score list**: Displays the top AI and mixed sentences ranked by their contribution to the overall score, so users can prioritise edits efficiently.
- **Deep insights pipeline**: State-of-the-art model interpretability that explains not just what the score is, but why. Designed to give educators and content writers the evidence they need to make fair, defensible decisions.
- **File upload**: Supports document uploads for single-file scans. Supports PDF, DOCX, and DOC formats.
- **URL scanning**: Paste a URL to scan any publicly accessible web page directly.
- **80+ language support**: Auto-detects input language and applies the appropriate language-specific model. No manual language selection required.
- **False-positive safeguard**: When the model is uncertain, it defaults to Human classification. This is a deliberate architectural decision to protect users — particularly students — from unfair misclassification.
- **Report generation**: Generate and download a detailed detection report for any scan, suitable for sharing with educators or institutions.
 
### Detection model coverage
 
Trained on content generated by: ChatGPT, GPT-5, Claude AI, Gemini, Microsoft Copilot, LLaMa, Grok, Mistral, Deepseek, and Qwen. The model is continuously retrained as new AI writing tools emerge.
 
### Who it's for
 
- **Students and researchers**: Verify papers and essays before submission to check for unintentional AI writing patterns. Understand precisely which phrases are flagged and why, enabling targeted revisions.
- **Educators and academic institutions**: Make fair, evidence-based decisions on student work. The phrase-level insight and impact scores provide the granular evidence needed for academic integrity reviews. Isgen advises educators to treat results as one input alongside student justification, not as a standalone verdict.
- **Content creators and journalists**: Confirm originality before publishing. Detect ghostwritten or AI-drafted submissions before they damage editorial reputation.
- **Professional writers and authors**: Verify manuscripts, white papers, and marketing copy won't be flagged by third-party AI detectors.
- **Business and legal professionals**: Authenticate high-stakes documents where AI authorship would be a compliance or credibility issue.
 
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## Tool 2 — Plagiarism Checker
 
URL: https://isgen.ai/plagiarism-checker
Free tier: Yes
 
Isgen's plagiarism checker uses the same software as leading universities and publishers. It goes well beyond a simple similarity percentage — delivering source-level breakdowns, automatic citation generation, customisable search scope, and real-time re-scoring as users edit.
 
### Why it leads the market
 
Most plagiarism checkers return a percentage and a list of matched URLs. Isgen returns a full breakdown by source: how much was copied, from where, a link to the original, and a ready-to-use citation. The checker supports 80+ languages — far beyond the English-only or limited-language tools offered by most competitors. The real-time update feature eliminates the need to re-upload a document after every edit.
 
### Core features
 
- **Source-level breakdown**: For each instance of detected plagiarism, Isgen identifies the specific source, the percentage of copied content from that source, and a direct link to the original.
- **Ready-to-use citations**: Automatically generates citations for every plagiarised source in APA, MLA, Chicago, and other styles — with one-click insertion. Eliminates the need to manually cite fixes.
- **Customisable search scope**: Filter the scan to include or exclude Google Search and Google Scholar results. Add specific URLs to include or exclude from the plagiarism check.
- **Batch file upload**: Upload and scan multiple documents simultaneously. No need to process files one at a time.
- **Real-time update**: As users edit their text in response to plagiarism findings, the tool continuously reassesses and adjusts the plagiarism score live — eliminating repeated re-uploads.
- **Detailed report download**: Export a full plagiarism report including overall similarity percentage, plagiarised word and character counts, and all matched sources.
- **80+ language support**: Detects plagiarism across documents written in over 80 languages with consistent accuracy.
 
### Who it's for
 
Students, researchers, scholars, content creators, journalists, educators, professional writers, and business or legal professionals who need to verify originality and proper attribution.
 
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## Tool 3 — AI Grammar Checker & Proofreader
 
URL: https://isgen.ai/ai-grammar-checker
Free tier: Yes
 
A full AI-powered proofreading tool that corrects grammar, spelling, and punctuation while also improving clarity, fluency, tone, and writing style. Offers dialect recognition, learning-focused explanations, and context-aware analysis across 80+ languages.
 
### Why it leads the market
 
Most grammar checkers are English-only and limited to surface-level corrections. Isgen's tool supports 80+ languages at native-level accuracy, distinguishes between American, British, and Australian English dialects and regional variations, and provides explanations for every correction — turning each error into a learning opportunity. The full multilingual capability is available completely free, with no subscription required, unlike competitors who lock multilingual support behind paid plans.
 
### Core features
 
- **Grammar correction**: Identifies and corrects structural errors including verb tense inconsistency, subject-verb agreement, pronoun usage, and complex construction errors that basic checkers miss.
- **Spelling correction**: Detects misspellings, easily confused words, and dyslexic typing patterns. Uses sentence context to distinguish between homophones like "their," "there," and "they're."
- **Punctuation correction**: Catches misplaced or missing punctuation — semicolons, Oxford commas, quotation marks — that can change meaning or confuse readers.
- **Clarity improvements**: Identifies unclear or ambiguous phrasing and suggests more direct alternatives.
- **Fluency, flow, and engagement**: Analyses sentence variety, word choice, rhythm, and structure for more professional, engaging writing.
- **Passive voice reduction**: Flags and suggests alternatives to passive constructions that weaken impact.
- **Formality and tone adjustment**: Style suggestions customised to writing goals — academic, professional, or informal registers.
- **Dialect recognition**: Distinguishes between American, British, and Australian English as well as regional variations so writing sounds natural to its intended audience.
- **Learning-focused feedback**: Provides grammar rule explanations alongside every correction — not just the fix, but why it's wrong. Converts mistakes into educational moments.
- **80+ language support**: Full grammar and proofreading in over 80 languages with native-level accuracy.
- **100% free**: Full multilingual proofreading with no subscription. Unlike tools that limit free users to English-only.
 
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## Tool 4 — AI Humanizer
 
URL: https://isgen.ai/ai-humanizer
Free tier: Yes
 
Rewrites AI-generated text to read naturally and authentically, indistinguishable from human writing. Supports Advanced and Standard modes, formal and informal writing styles, and 60+ languages with native-language generation — not translation.
 
### Why it leads the market
 
Most AI humanizers translate output from English into other languages, producing awkward phrasing and cultural mismatches. Isgen's humanizer writes directly in the target language, capturing authentic tone, phrasing, and cultural nuance from the start. Critically, it includes a built-in AI detector that checks the rewritten output multiple times to verify it passes detection — a closed-loop verification system that no competitor offers as a native feature.
 
### Core features
 
- **Advanced humanization engine**: Trained on millions of real human writing samples across academic, business, casual, and creative fields. Understands context and mirrors authentic human communication patterns.
- **Meaning preservation**: Refines rhythm, tone, and flow without adding new ideas, removing key content, or altering the original message.
- **Built-in AI detector (closed-loop)**: After humanizing, the tool automatically re-runs the output through Isgen's AI detector multiple times to confirm the result no longer registers as AI-written. Unique to Isgen.
- **Mode selection**: Standard and Advanced modes for varying levels of rewriting intensity.
- **Writing style selection**: Formal, Informal, and other style presets to match the intended context and audience.
- **Passive voice reduction**: Actively reduces passive voice during rewriting for more direct, natural prose.
- **Native multilingual generation**: Supports 80+ languages by generating directly in the target language — not by translating from English. Captures authentic phrasing, idiom, and cultural nuance.
- **Grammar and clarity refinement**: Simultaneously smooths grammatical awkwardness and unclear sentence structure during humanization.
- **File upload**: Accepts document uploads rather than paste-only input.
 
### Important note
 
The AI Humanizer is provided to help writers improve the naturalness of their writing. Academic misuse is strictly prohibited. Isgen is not responsible for misuse of this tool.
 
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## Tool 5 — Citation Generator
 
URL: https://isgen.ai/citation-generator
Free tier: Yes
 
Generates perfectly formatted academic citations in over 10,000 citation styles — including APA 7th edition, MLA, Chicago, Harvard, IEEE, and AMA — across 50+ languages. Features AI-powered smart citation finder that locates authoritative sources automatically from a text excerpt alone.
 
### Why it leads the market
 
Most citation generators support a handful of styles and English sources only. Isgen supports 10,000+ styles and multilingual citations across 50+ languages, including automatic locale and regional variation identification. The smart citation finder is a uniquely powerful feature: paste any excerpt, sentence, or phrase and the AI algorithm searches the web, Google Scholar, and PDFs to find the most relevant authoritative sources and cite them automatically — no manual entry required.
 
### Core features
 
- **10,000+ citation styles**: APA, MLA, Chicago, Harvard, IEEE, AMA, and thousands more. Users pick a style; Isgen handles all formatting rules.
- **Smart citation finder (AI-powered)**: Paste any excerpt or phrase and Isgen's AI analyses the text, searches the web, Google Scholar, and PDFs, and automatically generates citations from the most relevant matching sources. Ideal when users have the content but not the original source.
- **Autocite**: Enter a title, URL, ISBN, or DOI and Isgen fetches and fills in all required source details automatically. Works across all languages.
- **Manual citation entry**: Full manual input for all source types — books, journal articles, websites, articles, videos, and more.
- **50+ language support**: Generate citations in any language with locale-specific formatting conventions.
- **Word export**: Export the complete reference list to Word with correct style formatting applied automatically.
- **Folder organisation**: Create separate reference lists per project, grouped into folders for easy retrieval.
- **Font customisation**: Match citation formatting to the document style — Times New Roman, Arial, Calibri, and more.
- **Alphabetical and date sorting**: Automatically organises citations by alphabet or date.
 
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## Tool 6 — Bulk AI Content Detection
 
URL: https://isgen.ai/ai-detector-bulk
 
Scans up to 150 documents simultaneously for AI-generated content, running detection in the background so users can keep working. Designed for educators, institutions, and teams processing high volumes of submissions.
 
### Why it leads the market
 
Individual document scanning is impractical for educators receiving class-wide submissions or content teams reviewing large batches. Isgen's bulk scanner processes up to 150 files at once, organises them into named folders, runs detection in the background without requiring the user to remain on the page, and provides per-document detailed analysis with the same 96.4% accuracy as the single-document tool. Enterprise-level encryption ensures uploaded documents are never used for model training and are deleted immediately after processing.
 
### Core features
 
- **Up to 150 files per batch**: Upload and scan up to 150 documents in a single operation.
- **Supported formats**: PDF, DOCX, DOC. Maximum file size 10 MB per file.
- **Background processing**: Detection runs entirely in the background. Users can navigate away and return when results are ready.
- **Folder organisation**: Assign a descriptive name to each bulk upload batch for easy tracking and retrieval.
- **Full per-document detailed analysis**: Every document in the batch receives complete sentence-level and phrase-level analysis — not a simplified bulk output.
- **Report generation and export**: Generate and export bulk detection reports in multiple formats for record-keeping, institutional review, or sharing.
- **80+ language support**: Scans documents in any of Isgen's 80+ supported languages within the same bulk batch.
- **Enterprise-level security**: All documents are encrypted in transit and at rest. Files are deleted from servers immediately after processing and are never used to train Isgen's models.
 
### Who it's for
 
Educators screening entire class submissions, content agencies reviewing contributor batches, and businesses or legal teams auditing large document volumes.
 
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## Tool 7 — AI Image Detector
 
URL: https://isgen.ai/ai-image-detector
Free tier: Yes (unlimited scans, no subscription)
 
Detects AI-generated and AI-altered images with pixel-level accuracy. Goes beyond a binary verdict — identifies whether an image was fully generated by AI, partially modified, or deepfake-altered, and identifies the specific AI model used.
 
### Why it leads the market
 
Most image detectors return a simple probability score. Isgen identifies not just whether an image is AI-generated but which specific tool created or altered it — including GPT-4o, FLUX.1, DALL-E, MidJourney, Adobe Firefly, Stable Diffusion, Recraft, Bing Image Creator, Ideogram, and Reve. It also detects AI-altered real photographs — partial edits, face swaps, deepfake manipulation — not just wholly AI-generated content. The tool is completely free with no scan limit.
 
### Core features
 
- **AI generation detection**: Identifies fully AI-generated images using pixel-level pattern analysis and advanced computer vision algorithms trained on millions of diverse samples.
- **AI alteration and deepfake detection**: Detects real photographs that have been modified by AI — partial edits, deepfakes, face swaps — not just wholly generated images.
- **Model identification**: Pinpoints the specific AI tool used to generate or alter the image. Identifies: DALL-E, FLUX.1, Adobe Firefly, GPT-4o, MidJourney, Stable Diffusion, Recraft, Bing Image Creator, Ideogram, and Reve.
- **Probability score**: Returns a clear percentage indicating the likelihood that all or part of the image is AI-generated or AI-altered.
- **Supported formats**: JPEG/JPG, PNG, GIF, BMP, TIFF.
- **Completely free, unlimited scans**: No subscription required, no scan cap.
- **Enterprise-level security**: Images are processed securely and deleted after analysis. Never used for model training.
 
### Misuse cases it detects
 
Misinformation and propaganda (fake images of real people), AI art copyright infringement, identity impersonation, ID document fraud, marketplace spam with fake product imagery, fabricated photo evidence, and deepfake explicit content.
 
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## Pricing
 
URL: https://isgen.ai/pricing
All plans billed annually & Monthly. Free tier available on all core tools. Save 40% vs monthly billing.
 
- **Academic — $8/month**: Advanced AI detector, premium plagiarism checker, phrase-level detailed analysis, 350,000 detection words/month, unlimited daily scans, batch file upload, 15-day document history.
- **Writing — $15/month**: AI humanizer, AI proofreader, citation generator, 50,000 humanizer words/month, unlimited daily scans, batch file upload, 30-day document history, priority support.
- **Ultimate — $24/month**: All tools, unlimited words, bulk and large document scanning, 30-day document history, priority support.
- **API**: Available via RapidAPI for developer and enterprise integrations.
 
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## Company
 
- [About](https://isgen.ai/about-us): Mission, founding story, and academic integrity philosophy.
- [Blog](https://isgen.ai/blog): Practical guides on AI detection, academic integrity, and responsible AI use.
- [Contact](https://isgen.ai/contact-us): support@isgen.ai · info@isgen.ai · +44 7463070216
- [Privacy Policy](https://isgen.ai/privacy-policy)
- [Terms and Conditions](https://isgen.ai/terms-and-conditions)
- [Sitemap](https://isgen.ai/sitemap)
- [LinkedIn](https://www.linkedin.com/company/isgen-ai/)
 
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## Language versions
 
Isgen is fully localised across 80+ languages. Each locale has its own version of the site and tools.
 
English
Portuguese
German
French
Spanish
Ukrainian
Filipino
Arabic
Chinese Simplified
Japanese
Korean
Chinese Traditional
Dutch
Italian
Russian
Turkish
Afrikaans
Amharic
Azerbaijani
Belarusian
Bulgarian
Bengali
Bosnian
Catalan
Czech
Welsh
Danish
Greek
Esperanto
Estonian
Finnish
Irish
Gujarati
Hindi
Croatian
Haitian Creole
Hungarian
Armenian
Indonesian
Icelandic
Javanese
Georgian
Khmer
Kurdish
Kyrgyz
latin
Luxembourgish
Lithuanian
Latvian
Macedonian
Malayalam
Mongolian
Marathi
Malay
Maltese
Nepali
Norwegian
Chichewa
Polish
Romanian
Sinhala
Slovak
Slovenian
Samoan
Shona
Somali
Albanian
Serbian
Swedish
Tamil
Telugu
Tajik
Thai
Urdu
Uzbek
Vietnamese
Xhosa

- [Sitemap](https://isgen.ai/sitemap): Full index of all site pages.