Last updated 08-11-2026
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ZeroGPT
ZeroGPT scans pasted text or uploaded files to estimate whether ChatGPT, GPT-5, Gemini, Claude, or other LLM models wrote it, highlighting AI sentences with percentage scores. The free detector handles up to 15,000 characters per check and sits inside a larger writing suite with humanizer, plagiarism, grammar, and summarizer tools.
Standalone AI detectors often flag whole documents without sentence-level detail, while plagiarism scanners ignore whether the prose itself came from a model. ZeroGPT combines DeepAnalyse highlighting, PDF detection reports, batch uploads, and companion tools like an AI image detector and ZeroCHAT assistant on the same domain.
Teachers, publishers, recruiters, and SEO teams use ZeroGPT when they need fast LLM screening before accepting submissions. Free accounts work without a card, premium MAX and EXPERT subscriptions unlock higher character limits such as 350,000 characters per scan, and pay-as-you-go API access is available for custom integrations.
Free AI detector supports up to 15,000 characters per scan on the homepage
Premium tiers raise limits to 350,000 characters per check per upgrade messaging
DeepAnalyse highlights AI-written sentences with percentage gauges per document
Detects ChatGPT, GPT-5, Gemini, Grok, Claude, DeepSeek, and LLaMA family outputs
Batch file uploads process multiple documents from the user dashboard
Suite includes humanizer, plagiarism checker, paraphraser, grammar, translator, and ZeroCHAT
WhatsApp and Telegram bots expose detection and writing tools outside the browser
Sentence-level highlighting makes it clear which passages triggered AI scores
Large bundled toolkit reduces hopping between separate writing utilities
Free tier signup does not require a credit card on the pricing page
WhatsApp and Telegram access extends detection beyond the website
Personal MAX and EXPERT prices are not listed in static pricing page copy fetched during research
15,000 character free cap is tight for long essays or reports
AI detection scores can still produce false positives on heavily edited human text
What does ZeroGPT detect?
ZeroGPT estimates whether text was written by AI models such as ChatGPT, GPT-5, Gemini, Claude, Grok, and DeepSeek. ZeroGPT highlights individual sentences and shows an overall AI percentage score.
Is ZeroGPT free to use?
Yes. ZeroGPT offers a free plan at $0 forever with signup and character limits on the public detector. MAX and EXPERT subscriptions unlock higher scan limits such as 350,000 characters per check.
What is the free character limit on ZeroGPT?
The ZeroGPT homepage shows a 15,000 character limit on the free AI detector interface. Upgrading through the pricing page unlocks checks up to 350,000 characters according to the upgrade prompt.
Does ZeroGPT work in multiple languages?
Yes. ZeroGPT states its detection model supports all languages with high accuracy on the homepage feature list. The translator and grammar tools also cover multiple languages in the same suite.
Can ZeroGPT check images for AI generation?
Yes. ZeroGPT includes a separate AI Image Detector tool that analyzes whether an image is AI-generated or human-made. It lives alongside the text detector in the ZeroGPT products menu.
Does ZeroGPT offer an API?
Yes. ZeroGPT provides a pay-as-you-go API for detection, plagiarism, paraphrasing, summarization, grammar, translation, and chatbot endpoints. Developers fund a balance in the dashboard and retrieve API keys from the same account.