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Phrasly.AI (phrasly.ai) is a US company founded in 2023 that offers a range of AI tools geared toward students and professional writers.[1] Its products include an AI detector, plagiarism checker, and AI humanizer that rephrases text generated by ChatGPT and other large language models (LLMs) to sound more human. In the review below, we focused primarily … Read more

The Hugging Face AI Content Detector (https://huggingface.co/) is a free online app that assesses how human or AI a scanned piece of writing is. The result is displayed as percentages of how “Real” and “Fake” the text is. The AI Content Detector provides an alternative link for a more user-friendly page and interface. Hugging Face … Read more

Undetectable AI (undetectable.ai) is an AI detection and content rewriting platform that first released in early 2023. It’s best known for its humanizer, which modifies AI-generated text to sound more natural and less detectable by AI scanners. The company even offers refunds if content generated with its tool fails to bypass AI detection.[1] In addition … Read more

Isgen AI is a multi-lingual AI detector that incorporated in February 2024[1]. If boasts detection services in over 80 languages while providing humanizing, plagiarism checking, and other standard AI writing services. Pros Good plagiarism checker Can detects AI in multiple languages Cons 1/7 against LLMs 2/8 against humanizers Features AI detector: Identifies non-human writing in … Read more

The Monica AI Detector (https://monica.im/) is an app that allows users to scan pasted text and receive an assessment of how likely it is AI-generated. The app is provided for limited free use and is included in a paid subscription that provides multiple AI-based apps and services. Monica integrates multiple LLM models, such as ChatGPT, … Read more

Grammarly is an industry-leading AI grammar checker and writing assistant that began providing AI detection services in September of 2024.[1] This review will focus exclusively on the performance of the AI detector and is not a review of Grammarly’s other services. Pros 0 False Positives Performs well against LLMs User-friendly platform and additional services Cons Scored … Read more

QuillBot (quillbot.com) is a writing assistant and AI detector that launched in 2017.[1] It initially offered only a paraphrasing tool, but now provides plagiarism and grammar checkers, a humanizer, and AI detectors for both text and images. While QuillBot is known as a powerful writing aid, we primarily tested its AI detector to see how well … Read more

The BrandWell AI Checker (brandwell.ai) is a free online app that allows users to scan up to 2,500 characters of text to assess the probability that it is AI-generated. Longer text can be broken up to accommodate the character limit. The paid subscription from BrandWell provides business-directed services, which include AI-driven content creation, marketing, SEO … Read more

Smodin (smodin.io) is an AI-powered platform founded in 2017[1] that provides writing and content tools including an AI detector, AI humanizer, plagiarism checker, paraphrasing, translator, text summarizer, and AI chat. Pros No false positives on human-written content. AI detector, chat, and plagiarism do not require credits (with account). Cons 0/7 detection rate against LLMs. 1/8 … Read more