Free AI Detector & AI Checker

Absolutely not! Phrasly is committed to protecting your privacy. We do not store any of your content on our servers. All content is deleted immediately after you close the tab. We do not share content with third parties, and we do not use it for any purpose other than to check for AI.

There is no limit to how many times you can use the AI Detector. You can use it as many times as you'd like, however, text highlighting is only available to signed-in users.

Our AI writing detector is the most accurate in the industry, with an accuracy rate of 99.8%. Although we are constantly improving our algorithms, please note that no method of detection is 100% accurate. False positives are inevitable, but we are working hard to reduce them as much as possible.

To cite Phrasly's AI Detector in academic papers, you can use the following format: Author Name (Year). 'Title of the Software: Phrasly AI Detector.' Publisher, Version.

The terms "AI detector" and "AI checker" are used interchangeably and refer to the same technology. Both describe tools that analyze text to determine if it was written by artificial intelligence (like ChatGPT, Claude, or Gemini) or by a human. Phrasly's AI checker examines linguistic patterns, sentence structure, word choice predictability, and semantic flow to identify AI-generated content with 99.8% accuracy. Whether you call it an AI detector or AI checker, the functionality is identical.

Yes, our AI checker can detect content generated by ChatGPT, Claude (all versions), Google Gemini, Meta Llama, Jasper, Copy.ai, and most other large language models. The detector analyzes universal patterns in AI-generated text rather than tool-specific signatures, making it effective across different AI platforms. As new AI writing tools emerge, we update our detection models to maintain accuracy.

False positives can occur when human writing happens to match patterns common in AI-generated content. This might happen if you:Write in a very formal, academic style with consistent sentence structureUse predictable phrasing or common expressionsWrite about technical topics with standardized terminologyAre a non-native English speaker writing in simple, clear sentencesIf our AI detector flags your original work, try adding more personal examples, varying your sentence lengths, or including conversational elements. Then run the check again.

If our AI checker shows a high AI probability for your human-written text, try these strategies:For students and academic writers:Add specific examples from your personal experienceVary sentence lengths (mix short and long sentences)Include relevant anecdotes or observationsUse more diverse vocabularyRead your text aloud to ensure natural flowFor professional content:Include industry-specific insights that AI wouldn't knowAdd data or statistics with proper citationsUse active voice more than passive voiceBreak up long paragraphsInclude transitional phrases that show your thought processAfter making revisions, run the text through our AI detector again to verify improvements.If you're working with AI-generated content that you want to improve, you can use Phrasly's AI Humanizer to transform the text into more natural-sounding writing that's less likely to trigger detection.

Yes, educators frequently use our AI checker to assess student assignments. However, we strongly recommend using AI detection as one part of a holistic evaluation, not as the sole basis for academic integrity decisions. Consider:The detection percentage (higher scores warrant more attention)The student's typical writing style and abilityWhether the assignment explicitly prohibits AI useThe possibility of false positives, especially for ESL studentsHaving a conversation with the student about their writing processOur AI detector is a tool to inform judgment, not replace it. Many institutions now have clear AI usage policies that distinguish between acceptable AI assistance (grammar checking, brainstorming) and unacceptable use (having AI write the paper). Make sure students understand these boundaries.

Our AI checker achieves 99.8% accuracy, which is comparable to or better than other leading AI detection tools in the market (which typically report 95-98% accuracy for content entirely written by AI). The key differences:Accuracy: Phrasly offers industry-leading accuracy for fully AI-generated contentCost: Phrasly is 100% free with no limits; many alternatives require paid subscriptionsAccess: Anyone can use Phrasly instantly; some tools require institutional licensingPrivacy: Phrasly doesn't store content; some platforms retain submissions in their databasesDetection scope: Phrasly detects all major AI models (ChatGPT, Claude, Gemini, etc.)For students wanting to check their work before submission, Phrasly offers professional-grade AI detection technology without requiring institutional access, paid subscriptions, or compromising privacy.You can also explore our other tools: AI Humanizer to improve AI-generated text, Content Generator to create original content, and Citations Generator for proper source attribution.