Write anything with AI, from quick edits to full manuscripts. You decide. One editor for everything you write. Polish a paragraph or finish your thesis—Ludwig adapts to essays, papers, books, and documents of any length. Continue with Google for free Continue with email The writing enhancement platform that stands out International Business Times Used and loved by millions of Why Ludwig is different Most AI tools just generate text. Ludwig shows you how to write better. Long text & short text modes From quick edits to full manuscripts, Ludwig adapts to you Writing a 200-page dissertation isn't the same as polishing a quick email. Switch between long text mode for deep work and short text mode for fast edits—Ludwig adapts to your task, not the other way around. AI suggests, you decide Make deep edits without losing control Get AI help with complex edits—restructuring paragraphs, adding citations, strengthening arguments. Every change is a suggestion you preview and approve, not an automatic replacement. Edit where you write Polish every sentence without breaking your flow Click any sentence to improve it. Use inline commands to rephrase, expand, or fix tone without leaving your document. No copy-paste workflows. No context switching. Just seamless editing. Polish your writing Chat with your documents Stop switching between files. Start asking questions. Turn your documents into a searchable knowledge base. Upload PDFs and spreadsheets, then ask Ludwig to find insights, extract data, or cite sources as you write. Research and writing, unified. Know what's human, what's AI Check if text was written by AI or humans. Perfect for maintaining academic integrity, verifying sources, or ensuring your work meets originality standards. Check your text Our signature feature since 2015 Contextual Search While other tools rely purely on AI generation, we show you how real writers—across millions of published texts—actually used that word, phrase, or structure. See usage patterns. Compare alternatives. Verify your choices with real examples from academic papers, books, and trusted publications. Trusted by 2 million users worldwide Ludwig is by far the best website to check your language to find examples in prominent papers. I am a language teacher and an author, and with the help of Ludwig, I can ensure what I'm teaching is authentic and, more importantly, reliable! I have been very pleased with Ludwig.guru application from the start, it definitely helped me both in academic and professional environments. I would absolutely recommend Ludwig.guru to anyone who wants to achieve that next level of writing style, seek to improve one's writing skills and/or enhance one's writing ability. The app service is practical and very intuitive. It has greatly helped me during the writing of my scientific articles and even long my phD thesis. Thanks to Ludwig, I fixed some style mistakes, and it provided me with several good suggestions. I recommend it! Read all reviews on Trustpilot Reliable example sentences coming from the best sources of the web Academic & scientific writing This section is dedicated to the specialized language of research and scholarship. Academic and scientific writing is a... Business & professional communication This section covers the specific language used in formal settings like offices, legal correspondence, and academic...

Common idioms & sayings This section dives into the colorful and often confusing world of idioms, phrasal verbs, and common sayings. These are... Managing tasks, plans & problems This section is dedicated to the operational language of getting things done. It is the vocabulary of turning an idea... Social & polite expressions This section is dedicated to the language that lubricates human interaction. These are the formulas of courtesy,... Time, scheduling & deadlines This section is dedicated to the language that governs our most finite resource: time. In the professional world, our... Native desktop power, universal integration Get the Ludwig experience without switching tabs, by downloading the desktop app. It works perfectly with all your favorite writing apps, too! The limits of my language mean the limits of my world We are named after Ludwig Wittgenstein, the father of Philosophy of Language. Because language is not just grammar, but also context. Helping people with words since 2014 We are researchers Before being entrepreneurs, we are PhD and Postdoc researchers with the dream of making good English writing accessible for all. We are bootstrapped Ludwig is run by a team of 10 people. We have owned this company since day 1, choosing product quality over investors' profit, and we always will. We are reliable Write with Ludwig means staying true to intellectual property and accountability values. Ludwig is EU-based, and we are structured according to its regulations. We are digital humanists We consider AI a great opportunity for democratizing language, and we have always worked to put humans and human-made content at the center. Frequently Asked Questions What makes Ludwig special? Ludwig is like having Grammarly and ChatGPT working together in perfect harmony. We've combined our 10 years of proven experience helping millions of people write better and feel more confident with the revolutionary power of AI technology. Ludwig is the AI writing specialist that's designed specifically to help you write better, no matter what you're working on – whether it's a professional email, academic paper, creative content, or everyday communication. Our AI understands the nuances of language and provides intelligent suggestions that go beyond basic grammar checking. But that's not all. You also get access to a complete AI assistant that's perfect for tackling any kind of task, from research and brainstorming to problem-solving and creative projects. It's like having a writing expert and intelligent assistant rolled into one powerful platform, built on a decade of linguistic expertise and cutting-edge AI innovation. Why should I register to Ludwig? Sign up and get daily queries for free, and keep writing like a pro. Once you register, you get all the tools that Ludwig Premium users have (only with fewer requests per day, of course). Signing up for Ludwig 's tools is the best choice you can think of when you need to stick to your core ideas while getting a cool form that fits from the most formal situations to the most informal ones. Try Search in Context to make sure your idioms make sense, or Grammar Check to give a quick polish to your sentences’ grammar and form. Sentence Rewrite can make your sentences shorter, longer, formal, or academic in no time. Editor makes entire texts shine with style and corrects every single typo with coherence. Not enough? We also have an AI Detector, a Library, and Ask PDF. Sign up and try all these AI tools for free . And if you really like them, we have a Premium and Premium Plus plan. Is Ludwig an alternative to Grammarly? Yes, Ludwig is a powerful alternative to Grammarly, but with significant advantages that set us apart. While we provide all the grammar and writing assistance you'd expect, Ludwig offers distinctive features that go far beyond traditional writing tools. Our standout feature is our advanced search through reliable, high-quality contexts that help you understand how language is actually used in real-world situations. This gives you insights that go deeper than simple grammar correction. Plus, you get a fully integrated AI assistant that works seamlessly within our editor and can handle any type of task you can imagine. Whether you need help with research, brainstorming, content creation, or problem-solving, Ludwig's AI assistant is right there when you need it, making it much more than just a writing checker – it's your complete writing and productivity companion. And here's something that's especially important if you're a student: Ludwig costs significantly less than Grammarly, making professional-quality writing assistance affordable for everyone who needs it most. Is Ludwig a grammar checker? You can use Ludwig as a Grammar Checker, but it is way more than that. There's more in a good grammar checker than what meets the eye. But, as much as we love Ludwig grammar checking abilities, we developed a platform that gets you slick English writing in no time. With Ludwig grammar tools like Editor and Grammar Check , you can seamlessly check and improve your English. • Grammar Check is ideal for shorter texts, helping you quickly spot and correct grammatical errors, typos, and awkward phrasing in sentences up to 260 characters. • Editor combines grammar checking, rewriting, and paraphrasing capabilities for longer pieces such as essays, articles, or research papers. It’s perfect for refining your English the Ludwig way , and ensuring your texts are professional and well-crafted. Whether you're a student, professional, or casual writer, Ludwig.guru makes grammar checking effortless and reliable for all your writing needs. To sum it up: Ludwig is not only a powerful linguistic search engine but also an effective grammar checker and editor that ensures your writing is polished and error-free. Whether you need to correct short phrases or lengthy texts, Ludwig has the tools to elevate your writing to the next level. What’s the difference between a sentence and a Ludwig sentence ? Easy: whether it is an academic paper, a publication, an essay, or a book chapter, a Ludwig sentence stands out for its coolness. Can Ludwig correct essays? Of course Ludwig can correct essays! Try our Editor tool, you'll be shocked by its performance. What's great about it is that you can paste your entire text into our Editor and work on it endlessly, without having to copy-paste one paragraph at a time. Ludwig Editor provides you with all you need to get your essay ready to be handed in: ask to check the entire text for grammar mistakes and typos, or select personally which sentences you want to scan. You may receive alternative phrases in different styles, or use the AI tools integrated in Editor to make your essay longer, shorter, or just less convoluted. What’s the difference between Grammar Check, Rewrite, and Editor? Grammar Check is Ludwig’s tool for a quick grammar check and typo correction on phrases or short sentences, not longer than 260 characters. Rewrite is a paraphrasing and AI rewriting tool that rewords your sentences according to the length, the register, and the tone you intend to use them for. Our AI Editor tool is an essay checker and essay editor , which means it corrects grammar, checks for typos, and rephrases convoluted writing of texts way longer than 260 characters. It is basically the union of Grammar Check and Sentence Rewrite , but for any long writing (articles, research papers , essays , emails, etc.). Is my data safe with Ludwig? Yes, Ludwig guarantees complete confidentiality , ensuring that your content is neither stored nor shared. You can trust that your submissions remain private, as your intellectual property, according to Ludwig’s strict integrity policy. Paraphrase free of worries about your privacy and intellectual property, while enjoying a pro AI writing experience. To know more about our privacy policy , click here . Try Ludwig for free Your next masterpiece, one click away © 2014-2026 Ludwig S.R.L.S. P.IVA 06333200829 REA PA-314445