Best Free AI Content Detection Tools of 2025

Create confident, precise, and error-free content using Grammarly's AI-driven writing tool. The latest update from Grammarly categorizes your writing suggestions by theme, allowing you to understand how each adjustment enhances your audience's comprehension of your communication. While composing on platforms like Gmail, Twitter, LinkedIn, and many others, you can receive instant corrections from Grammarly. This tool covers everything from grammar and spelling to style and tone, ensuring you eliminate mistakes and choose the most fitting words to convey your thoughts. Begin your journey for free and explore the capabilities that Grammarly can unlock for you. For organizations, Grammarly Business empowers every team member to produce polished, error-free writing that reflects positively on the business. Each email, webpage, and social media update leaves a lasting impression on customers, and with Grammarly, you can trust that it's an impressive one. Strong writing encompasses more than mere grammar; Grammarly Business delves deeper by providing real-time insights aimed at enhancing overall readability. This level of support allows teams to communicate more effectively and engage their audience more meaningfully.

Krater.ai is a user-friendly and comprehensive platform that provides a range of AI-powered tools and services, making it a powerful alternative to all the major AI services, tools, and apps. With Krater.ai, you can access all these tools and services in one convenient location, eliminating the need to switch between multiple apps and accounts that require different logins and pricing plans. Our AI-powered tool and templates enable you to generate 100% plagiarism-free content in seconds. You can be sure that your content is always original, allowing you to focus on creating high-quality content that resonates with your audience. Krater.ai offers competitive pricing plans that are tailored to meet your specific requirements. Whether you're a marketer, content creator, or small business owner, we have a pricing plan that suits your needs. Additionally, we have a free plan that you can try out without the need for a credit card.

GPTKit is an AI-generated text detection tool. Are you fed up of not being able distinguish between machine-generated text and human-written text? Look no further! We can classify text as machine-generated or human-generated using a multi-model approach. Give it a shot! Note: 6 methods are used to detect the problem with an accuracy of up to 93%. Each check of 1024 characters takes one credit. Please enter more than 50 words to get better results.

Artificial intelligence is perfectly equipped to tackle some of the most significant obstacles that students and writers encounter today, including writer's block, excessive information, and gaps in understanding. Smodin is a company dedicated to students that leverages AI to confront these major educational hurdles. With a focus on the most pressing issues faced by learners and creators, Smodin aims to make the writing process as effortless as possible. We firmly believe that writing should not be a barrier for anyone, regardless of their language skills, comprehension, or level of talent; instead, it should serve as a medium for unrestricted self-expression. Our diverse team consists of passionate developers and innovative thinkers located across the globe, with a significant presence in Islamabad, Pakistan. We prioritize ensuring that our team members engage in projects that they find meaningful and enjoyable. Under the leadership of our developer CEO, we maintain a strong emphasis on technical expertise and product development in all our endeavors, fostering an environment where creativity and innovation can thrive. Our commitment to making writing accessible empowers individuals to share their unique voices with the world.

Content at Scale is an innovative platform designed to enhance the capabilities of SEO marketers by enabling them to produce high-quality, engaging, and entirely original content efficiently and at scale. Utilizing sophisticated AI technology, it can generate comprehensive, research-based blog posts exceeding 2,500 words in merely five minutes, while simultaneously analyzing top-ranking Google content to construct a fully formed SEO blog article. Unlike typical AI writing assistants, this platform operates as a powerful long-form content generator, producing over 40 million words monthly for users across various industries and general informational queries. By embracing its cutting-edge AIO model, Content at Scale allows agencies and marketers to achieve significant time and cost savings—ranging from 10 to 25 times—compared to traditional human-only content creation methods. Its intuitive interface ensures that even those with no SEO background can easily produce content that is optimized for search engines. In addition, Content at Scale includes a tool for detecting AI-generated content, further enhancing its utility for marketers. This dual functionality positions the platform as a comprehensive solution for modern content creation needs.

Effortlessly craft breathtaking visuals using the AI Image Generator from Leap AI, a tool designed to transform text prompts into captivating images that serve a multitude of needs, including marketing, content development, and personal endeavors. This innovative tool guarantees high-quality imagery to elevate your projects, allowing you to showcase your ideas creatively. For optimal output, it is essential to supply detailed and vivid descriptions in your prompts. The greater the specificity of your input, the more striking and precise the resulting images will be, making your creative vision come to life in stunning detail.

AI assistant for customer-facing departments. Sapling works with messaging platforms and CRMs to assist agents in creating personalized responses. Managers can gain conversational insights that will help them coach and prepare their teams. Sapling offers functionality for autocomplete, spelling, grammar checking, as well as snippets/canned message/text expander. All services can be hosted on-premise or in the cloud to meet security and privacy requirements. The Grammar and Spelling APIs allow Sapling's language models to be integrated into custom applications and use-cases. Sapling Suggest pulls relevant answers from a team knowledge database and allows agents to respond faster to customer inquiries by clicking on the desired response. Instead of giving brittle, decision tree-based chatbots, empower agents.

Copyleaks is a leading AI text analysis platform dedicated to empowering businesses and educational institutions in navigating the evolving landscape of generative AI. With a strong focus on responsible innovation, the company emphasizes integrity, transparency, and ethics while driving technological advancement. Since its establishment in 2015, Copyleaks has utilized the power of AI to promote authenticity and originality. Its award-winning solutions, trusted by millions, support responsible AI adoption, protect intellectual property, ensure copyright compliance, and maintain academic integrity through comprehensive content detection. At the core of Copyleaks is a commitment to merging technology with integrity. The AI Grader by Copyleaks is a cutting-edge test grading solution designed to enhance efficiency, reduce errors, eliminate bias, and provide accurate grading for thousands of tests within minutes.

GPTZero reverses the technologies that power ChatGPT in order to identify AI usage, utilizing metrics such as perplexity to identify AI contributions. In addition, GPTZero is dedicated to maintaining a free and accessible version of its classic tool for all users. You can experience the original demo that has captured widespread attention online for yourself. Furthermore, we are developing a customized solution aimed at helping educators integrate AI technologies responsibly within educational settings. This initiative seeks to enhance the learning experience while ensuring ethical use of AI in the classroom.

This is an entirely free content optimization tool that analyzes the top 10 Google results for any specified keywords, utilizing entities and natural language processing while maintaining complete transparency without inventing or concealing keywords for your enhancement. Yes, you read that correctly—a content optimizer that remains free indefinitely and without limits. It collects the top 10 search results for any phrase, extracts relevant content (including anchor texts), and identifies keyword similarities based on the consensus from the majority of those results, specifically if six or more share common terms. These keywords are then compiled into a list that you should incorporate into your writing, with the tool averaging their occurrences across the top 10 results to assist you in better integrating them into your content. Unlike other services, our commitment is to remain completely free and unlimited. The tool is currently under development, and suggestions for new features can be shared in our Facebook group. To stay competitive, it’s crucial to revisit and optimize your articles periodically to align with the leading content in your niche. Remember, continual enhancement is key to staying at the forefront of search results.

Identify images that have been AI-generated, manipulated, or are deep fakes. Our platform provides a range of tools designed to assist users in comprehending how images are created through artificial intelligence. Users can determine whether an image is AI-generated, identify the specific AI model used, and pinpoint the areas of the image that are artificial. Additionally, we offer the ability to assess the probability that a given image was produced by AI. Illuminarty utilizes a variety of computer vision techniques to evaluate the likelihood of an image originating from publicly available AI generation models. Furthermore, users can also gauge the probability of AI involvement in a specific text. Our system employs multiple natural language processing methods to analyze the text and highlight sections most likely generated by AI. We are also developing a web browser extension that will enable users to utilize our detection tools seamlessly while browsing online. This extension aims to enhance digital literacy and awareness regarding the authenticity of online content.

Identify the presence of AI-generated content in academic materials, including works produced by GPT-4, ChatGPT, and Jasper. In an era dominated by AI writing tools, upholding academic integrity remains crucial. SciSpace has developed an AI detection tool that distinguishes between human and machine-generated text in scholarly works. By combining our findings with thorough analysis, you can ensure that your academic contributions remain genuine. Whether you're dealing with unstructured text or a PDF essay, obtaining swift and straightforward AI detection reports is a breeze. Simply paste your text into the editor or upload your document for analysis. Designed specifically for essays, assignments, and scholarly papers, our AI detection tool boasts an impressive accuracy rate of 98%. This level of precision, coupled with your own judgment, empowers you to make informed decisions regarding the content. You will receive and be able to download a detailed report that breaks down the entire document as well as analyzing it at the sentence level, indicating the extent and specific sections containing AI-generated text. By using this information, you can adjust the content to decrease the AI-generated text proportion and enhance your work's authenticity. This proactive approach allows you to maintain the integrity of your academic output while navigating the complexities of modern writing technologies.

We identify images created by AI to maintain the authenticity and credibility of your service. As the prevalence of AI-generated spam, fraudulent activities, and abuse continues to grow, platforms that host user-generated content are facing a surge in deceptive practices, including deepfakes and other forms of inauthentic media. The sophistication of modern models allows them to produce content that closely mimics real human creations, challenging existing systems to effectively differentiate between true human-generated works and those produced by AI. Our cutting-edge algorithms adapt swiftly to the rapid advancements in AI content creation, ensuring they remain effective. Our dedicated research team leads the charge in developing scalable solutions for the identification of AI-generated material. Furthermore, our API enables seamless integration of advanced AI models, allowing you to prioritize your core business objectives. Unlike many current systems that infringe on user privacy by gathering and processing personal information without explicit consent, we are committed to implementing privacy-first approaches in our solutions. By safeguarding user data while providing robust detection capabilities, we strive to create a more trustworthy digital environment.

Experience unmatched precision and simplicity with our AI checker, a tool endorsed by professionals for its exceptional ability to detect AI-generated content. It highlights every sentence produced by AI while visually presenting the proportion of AI text within the document. Crafted for exceptional accuracy, our AI checker efficiently recognizes AI-generated material with great reliability. With a user-friendly design, our interface guarantees a seamless and uncomplicated experience for users. You can start identifying AI-generated content immediately, without the need for any account creation. Rest assured, your submissions remain private, as we do not store or share your information. Our AI checker offers extensive coverage across a range of AI models, allowing it to detect content generated by ChatGPT, Gemini, Jasper, Claude, and various other platforms. We are committed to continuously enhancing our system, ensuring it can automatically identify emerging models like GPT-4, thus keeping our AI detector aligned with the latest advancements in AI technology. Additionally, this commitment to innovation means you will always have access to the most reliable detection tools available.

Here is a web demonstration of the GPT-2 output detection model, which utilizes the RoBERTa implementation from 🤗/Transformers. Simply input your text into the provided box, and the predicted probabilities will appear underneath. It's important to note that the results become more dependable once the input reaches approximately 50 tokens. As you experiment with different inputs, you can gauge the model's performance and reliability over various text lengths.

ZeroGPT stands out as the most precise and dependable tool available for identifying content generated by AI, including that produced by ChatGPT. Its effectiveness in distinguishing between human and machine-generated text makes it an essential resource for writers and educators alike.

Our team diligently reviews the most recent results from ChatGPT and various other AI models on a daily basis, ensuring our recognition algorithm remains up-to-date. Should you discover an AI detection tool that outperforms ours, feel free to share your findings with us for a refund. AIDP specializes in identifying AI-generated content in English, Spanish, and German texts. Additionally, it emphasizes sections within your document that may be flagged by AI detection tools. For English content, it provides insights into predicted AI text and marks frequently used phrases and words associated with AI.

Enago Reports offers a comprehensive suite of reports that utilize advanced artificial intelligence to evaluate and improve the quality, integrity, and impact of various document types in a swift, precise, and thorough manner. Drawing on 17 years of accumulated expertise, Enago effectively optimizes documents to help them reach their fullest potential. This service is closely connected with Trinka.ai, a comprehensive AI-driven writing assistant, creating a synergistic technological environment where users can efficiently collaborate with both Enago Reports and Trinka to enhance productivity in writing and manuscript assessment. In addition, Enago is a member of the Crimson Group, a reputable provider of author services, including premium English editing, localization, translation, transcription, and more, established in 2005. With a remarkable track record of aiding over 2 million authors across more than 125 countries, Enago significantly boosts the effectiveness of research communication for scholars worldwide. This collaboration ensures that authors receive the best possible support in their writing endeavors, leading to greater success in their academic and professional pursuits.

ZeroGPT Plus serves as a complimentary AI content plagiarism detection tool that operates without the need for user registration. This innovative tool is specifically crafted to identify content produced by AI systems such as ChatGPT, Gemini, Claude, and Copilot. Utilizing cutting-edge technology, it meticulously analyzes text against an extensive database to uncover indications of AI-generated material. In addition to its detection capabilities, this tool also enhances AI-authored content, making it more relatable and natural in tone. Users have the flexibility to select various languages and styles, ensuring that the output aligns with their specific requirements and preferences. This versatile tool is ideal for anyone looking to refine their written content while ensuring its authenticity.

Ensure the authenticity of images and audio for both your business and personal needs by utilizing AI or Not. This tool allows you to swiftly check for generative AI content, helping to minimize fraud and combat the newest scams. Additionally, it plays a crucial role in protecting music copyrights by determining if an artist's voice has been utilized in AI-generated audio creations. Strengthen your trust and safety initiatives with effective AI content detection, and accurately identify deepfakes with a high level of transparency. Furthermore, it helps secure identity verification and KYC compliance by guarding against the risks posed by AI-generated synthetic identification. AI or Not is a web-based service designed to help users quickly discern whether an image is artificially created or crafted by a human. In cases where the image is confirmed to be AI-generated, our system will specify the AI model responsible for its creation. For those requiring extensive image analysis, we provide the AI or Not API, facilitating bulk image assessments and easy integration into existing platforms. While the analysis of individual images is offered free of charge, we also provide a premium API service tailored for bulk evaluations or commercial applications. Moreover, our commitment to user-friendliness ensures that both casual users and businesses can benefit from our services effectively.

X Detector is a cutting-edge tool that caters to over a dozen prominent languages, including Chinese, English, and French, ensuring it encompasses all the major languages spoken globally. Regardless of your linguistic background, X Detector can pinpoint languages with remarkable accuracy. Utilizing sophisticated AI algorithms, X Detector excels at identifying AI-generated content with exceptional precision. This capability guarantees that users can trust the tool to deliver dependable outcomes for their detection requirements. The innovative technology behind the tool allows it to swiftly analyze text inputs and provide feedback in mere seconds, greatly enhancing the overall efficiency of AI content detection. The interface of X Detector is designed for user convenience, making it incredibly straightforward to navigate. Whether you are a professional seeking dependable detection tools or an individual in search of a straightforward and effective solution, X Detector is equipped to fulfill your requirements, consistently providing you with precise and efficient results. Additionally, the versatility of X Detector makes it an invaluable resource for various applications across different industries.

Stealthy AI Content Enhancer - Humanization and Detection Tool. Our stealthy AI content enhancer transforms your writing into content that mimics human expression, ensuring it is grammatically correct and free from plagiarism, all while eluding detection by AI scanners. Key Features: Content Humanizer, AI Detection Tool, AI Writing Assistant, Evade AI Detection, Original Content, Error-free Language Quickly detect and refine AI-produced text to elevate its authenticity and readability, guaranteeing that your work seamlessly navigates past leading AI detection systems with the simplicity of a single click. Additionally, this tool not only enhances your text but also empowers you to maintain originality and clarity in all your writing endeavors.

GLTR is designed to utilize the same models that generate counterfeit text as a means for detection. It incorporates the GPT-2 117M language model from OpenAI, which stands out as one of the most substantial models accessible to the public. By taking any given textual input, GLTR evaluates the predictions made by GPT-2 at each position in the text. The output showcases a ranking of all words recognized by the model, allowing us to determine how the actual following word ranks in comparison. Utilizing this positional data, a color-coded mask is applied to the text, reflecting the ranking position of each word. Words that rank among the most probable are shaded in green (for the top 10), yellow (for the top 100), red (for the top 1,000), while the remaining words appear in purple. Consequently, this method provides a clear visual representation of how probable each word is according to the model's predictions, ultimately enhancing our ability to identify potentially fake text. Additionally, this visual tool can help users quickly gauge the authenticity of a given passage.

Discover whether the websites you visit include content created by AI. Detect GPT examines the text of the webpage you are currently accessing, evaluating it to determine if any portions have been produced utilizing the GPT language model. This tool can help users understand the origin of the content they consume online.

SEOBy.ai provides an excellent opportunity to enhance your marketing strategies and achieve higher rankings on search engines at no cost. This platform allows you to attract organic traffic to your website or landing page, ultimately increasing your product sales. Effective SEO is crucial, particularly for startups operating on a limited budget. By implementing SEO best practices, you can outshine your competitors, secure a better position in search results, and enjoy the benefits of free organic traffic directing attention to your site. ✅ Completely free, no expiration. ✅ Adheres to industry best practices. ✅ Discover relevant keywords using our AI SEO Keyword tool. ✅ Identify whether content is AI-generated or human-written with our AI Content Detector. ✅ Create AI-generated topic clusters based on pertinent keywords. ✅ Utilize our AI title generator for captivating headlines. ✅ Access the AI paragraph generator or rewriter for enhanced content. ✅ Generate compelling product descriptions through our AI product description tool. ✅ Rewrite sentences effortlessly with our AI sentence rewriter. ✅ Paraphrase content using our AI paraphrase tool. ✅ Benefit from AI spellcheck and anticipate even more features in the future. As I continue to develop additional free SEO tools throughout this year, I am excited to offer even more resources to support your marketing success.