How to recognize text generated by AI: 10 tools

Hugging Face AI Detector
A free model from Hugging Face is available via web interfaces and APIs, such as TrueText. It analyzes the probability of AI generation without restrictions on simple queries. The advantage is open access and flexible configuration. Limits depend on the provider; models are often available for around 1000 words.

Turnitin AI Detection
A leader in academic verification, it offers free access through educational institutions. It checks text for AI generation, targeting teachers and students, but is not intended for mass use without a university account.

Detecting‑AI.com
A platform with a free tier limited to 5000 characters and 100 checks per day, without support or access to new features. Premium plans include an annual subscription at $7 per month with unlimited checks. The service allows text analysis with highlighting of AI fragments and visual indicators. It supports ChatGPT, Gemini, Claude, and other AI models, with an accuracy rate of around 98%.

GPTZero
The service provides sentence-by-sentence analysis, a visual indicator of AI probability, and small recommendations. The free version allows checking up to 10,000 words per month and supports batch analysis of up to five files. Paid plans starting at $9 per month add plagiarism checking, API access, and collaboration features.

ZeroGPT
A universal platform for detecting and improving AI-based content. The free version allows eight checks of up to 15,000 characters per day. Built-in tools can be used for paraphrasing, summarizing, translating, and grammar checking. Paid versions are available from $8 to $19 per month, which expand functionality without request limits.

Copyleaks AI Detector
Copyleaks combines AI and plagiarism checking, ensuring high accuracy—over 99% according to their own tests. The free version allows a limited number of checks and lets users familiarize themselves with the interface. Paid plans start at $8 per month for 300,000 words, with API access and multi-format text analysis, including code and cross-language checking.

Sapling AI Detector
A tool with up to 97% accuracy that identifies AI text by analyzing syntax, statistics, and context. It is suitable for academics, marketers, and companies. It supports text pasting, file uploads, and integrations with Google Docs, Chrome, Outlook, and Word. Paid plans starting at $12 per month expand limits and include advanced AI features and API access.

Hastewire
A service with a free tier of up to 400 words per month and texts of up to 100 words with an AI detector and a built-in humanizer for text editing. Paid plans vary from $5 per month, adding priority support and API integration for group users.

Originality.ai
A content analysis tool with up to 99% accuracy that identifies AI-generated text, detects direct and hidden plagiarism, evaluates readability, and verifies facts in real time. It supports over 30 languages. A free trial for 5000 words is available. There are paid plans starting at $30 for 3000 credits for two years or subscriptions from $13 per month.

Crossplag AI Content Detector
A free service without registration that detects AI and plagiarism content. Users have access to quick checks by paragraph, with the ability to check up to 500 words at once. It is best suited for screening small texts.