Compare Quillbot, AI Blaze, Grammarly, and LanguageTool: Which Extension is the Best?

	Quillbot	AI Blaze	Grammarly	LanguageTool
	Quillbot is an AI-powered writing assistant designed to enhance your writing with features like paraphrasing, grammar checking, and summarizing. Ideal for productivity and improving writing quality. Writing Education	AI Blaze is a Chrome extension that enhances productivity with AI-powered templates, snippets, and dynamic commands, ensuring consistent messaging across platforms. AI ChatGPT	Grammarly is a comprehensive writing assistant offering real-time grammar, spelling, punctuation, and style suggestions. With over 44 million users, it’s a trusted tool for enhancing your writing. Writing Education	LanguageTool impressed us as a solid grammar-checker alternative to Grammarly. It provides excellent multilingual support, is easy to use, and is more affordable but may struggle with longer texts. Writing Education
Key Features	Paraphrasing Tool: Rewrites your sentences to improve clarity and style. Grammar Checker: Identifies and corrects grammatical errors. Summarizer: Condenses long texts into shorter summaries. Citation Generator: Helps you create citations in various formats. Plagiarism Checker: Ensures your content is original.	AI Assistant: Instantly access AI help on any webpage with the sidebar feature for writing, editing, and more Custom Templates: Create and save personalized templates with dynamic fields for quick access Text Expansion: Type shortcuts to instantly expand into full messages, saving countless keystrokes Brand Voice Customization: Train the AI to write in your unique style and tone Dynamic Commands: Include variables like dates, form fields, and conditional logic in your snippets Team Collaboration: Share and edit snippets with teammates for consistent messaging Multiple AI Models: Choose between GPT-4o mini, GPT-4o, and Claude Sonnet depending on your needs Cross-Platform Compatibility: Works across Chrome, Windows, and macOS	Grammar Checker: Detects and corrects grammatical errors. Spelling Checker: Identifies and fixes spelling mistakes. Punctuation Checker: Ensures proper punctuation usage. Tone Detector: Analyzes the tone of your writing. Auto-Citations: Generates citations for online sources. Generative AI: Produces instant drafts, ideas, and replies.	Style Suggestions: Offers synonym replacements, concise rephrasing, and formal alternatives. Spell Checker: Identifies and corrects spelling errors. Multilingual Support: Supports over 25 languages including English, German, Spanish, and French. Plagiarism Detection: Checks for duplicate content. Personal Dictionary: Allows users to add custom words for future checks. Privacy: GDPR compliant and ensures secure, encrypted connections and no IP address storage.
Our Rating	8.7	9.0	8.8	8.8
Total users	4,460,770	40,000	53,595,659	4,182,896
Total ratings	2,795	133	47,084	16,426
Average rating	4.6 ⭐	5.0 ⭐	4.2 ⭐	4.8 ⭐
Entry Level Price	Free	Free	Free	Free
Chrome	4.7 2.7K+ ratings 4.0M+Users	5.0 133 ratings 40.0K+Users	4.5 42.8K+ ratings 38.0M+Users	4.8 11.3K+ ratings 3.0M+Users
Edge	4.5 95 ratings 460.8K+Users	-	3.9 1.1K+ ratings 14.9M+Users	4.8 562 ratings 810.7K+Users
Firefox	-	-	4.1 3.2K+ ratings 649.2K+Users	4.7 4.5K+ ratings 372.2K+Users
Safari	-	-	-	-
Features	9.0 Paraphrasing Tool: Quillbot's paraphrasing tool is one of its standout features. It offers multiple modes like Standard, Fluency, and Creative, allowing users to choose the level of rewriting they need. We found it particularly useful for avoiding plagiarism and improving sentence structure. Grammar Checker: The grammar checker is robust, catching errors that many basic spell checkers miss. However, it sometimes flagged correct sentences as incorrect, which can be a bit annoying. Summarizer: Quillbot's summarizer is effective for condensing long articles or papers. It provides concise summaries that capture the main points, making it a valuable tool for students and professionals alike.	8.8 The AI writing aid worked very well in the test with emails, customer responses, and short formats. We particularly liked the dynamic templates, which adapt according to user input. The extension can therefore be adapted for both commercial use, such as quickly replying to emails, and for everyday private use. From summaries to social media texts, this helped enormously in the test. In particular, learners such as students should have a special added value here, for example, through summaries that can be created quickly. Overall, AI Blaze already offers the possibility for almost endless possibilities; at most, there could be even more templates, as users may otherwise not exploit the full potential due to ignorance.	9.5 Grammarly goes beyond basic grammar and spelling checks. It offers advanced features like tone detection, vocabulary enhancement, and generative AI capabilities. Compared to competitors, Grammarly provides a more comprehensive set of tools, making it a valuable asset for any writer.	9.0 LanguageTool offers a comprehensive set of features that go beyond basic grammar and spelling checks. It supports over 20 languages, making it a versatile tool for multilingual users. The advanced grammar checks are particularly impressive, catching complex issues that many other tools miss. Compared to competitors like Grammarly, LanguageTool holds its own with unique features like custom dictionaries and plagiarism detection.
Performance	8.8 Quillbot performs well with small to medium-sized texts, but it can slow down when processing larger documents.	8.9 In our test, AI Blaze worked reliably on most websites and in various applications. The only thing that was immediately noticeable at the beginning was that the functions do not work in the Chrome Store, so websites may prevent access for the extension, but this did not otherwise occur in the test. The text expansion works immediately, and the AI-controlled functions generally respond quickly, depending on the model selected. When using the most advanced AI models for complex tasks, there were occasional short delays, but these were minimal.	9.0 Grammarly performs well across different platforms, providing real-time suggestions without significant lag. The tool is reliable and helps improve writing efficiency.	8.0 LanguageTool does a good job of spotting grammar and style issues. However, it can take a while to process longer texts, and sometimes, clicking on suggestions causes the page to jump to the top, which can be a bit frustrating.
Design	9.0 User Interface: Quillbot boasts a clean and intuitive interface. The layout is straightforward, making it easy for users to navigate through different features without any hassle. Customization: The tool offers various customization options, such as different paraphrasing modes and the ability to adjust the length of summaries. These features make it adaptable to different writing needs.	8.8 The clear, intuitive user interface should also make AI Blaze possible for private users who are not so tech-savvy. The integration into the sidebar is very well done and offers a seamless integration into the design of the browser. There is little that can be customized visually, but this should hardly be necessary. Overall, the design focuses on functionality while maintaining an appealing appearance.	8.5 The design is clean and intuitive, making it easy to navigate. The color-coded underlines for suggestions are helpful, and the interface is user-friendly. However, some users might find the pop-ups slightly intrusive.	8.0 The design is clean and intuitive, making it easy for users to navigate and utilize the tool effectively. The browser integration is seamless, and the user interface is straightforward.
Value for Money	9.0 Free vs. Paid: While the free version offers basic functionality, the premium plans unlock a wealth of features that significantly enhance the tool's utility. Cost-Effectiveness: Compared to its competitors, Quillbot is slightly cheaper than Grammarly but more expensive than LanguageTool. From our perspective, Quillbot doesn't offer more value than LanguageTool, so we believe it should be priced similarly. However, it currently offers significant discounts on their plans, which makes it a very good investment in your writing.	9.0 In this area, a clear distinction must be made between private and commercial users. For the private user, AI Blaze already offers enough functionality for most people in the free plan. Here we also appreciate the Academic Edition, which offers students and teachers extended, free access. The Pro plan could be too high for private users at $20/month with annual billing. For businesses, however, AI Blaze's Pro plan offers exceptional value compared to similar productivity tools. The time savings alone can justify the investment for most users. For those who want to work in teams, AI Blaze offers the Business plan for $24/user/month. This includes additional comprehensive functions for collaboration and improved communication processes. Compared to alternatives, AI Blaze offers a competitive feature set at a reasonable price for businesses. The ROI is clear after just a few days of regular use, especially for those who frequently write similar messages.	8.5 While Grammarly offers a free version, the Premium plan is relatively expensive. However, the advanced features and comprehensive feedback justify the cost for those who need a robust writing assistant. Grammarly is the priciest option for a reason—because, in our view, it's the best writing tool available in its category. If you're looking for the best writing assistant, go for the Premium plan, you won't regret it!	9.5 The free version gives you the basics, but the premium version really shines with its advanced features. While Grammarly can be expensive, LanguageTool offers great value at a more affordable price. So, if you’re seeking a budget-friendly alternative to Grammarly, LanguageTool is a solid choice.
Ease of Use	7.8 Quillbot's onboarding process is impressive, and the tool is easy to use right from the start. We quickly grasped most of its features. However, when compared to top competitors like Grammarly, it doesn't feel quite as natural or seamless to use.	9.0 For basic functions such as using templates and simple shortcuts, AI Blaze is extremely straightforward. New users can start using the ready-made templates within minutes, and they are well-explained. If you don't want to use the predefined shortcuts, you can create your own commands immediately, which makes it easier to remember the shortcuts in everyday life. We found the shortcuts intuitive and time-saving once you have memorized them. The search function makes it easy to find the right snippet quickly, even as the library grows. The advanced functions do require a certain amount of learning, but the basic functions are easily accessible straight away.	9.0 Grammarly is straightforward to use, with a minimal learning curve. The browser extension integrates seamlessly with various platforms like Google Docs and Gmail, allowing you to get started right away.	9.0 LanguageTool is very user-friendly, with a minimal learning curve. Most users will find it easy to get started and make the most of its features right out of the box.
Security & Privacy	8.8 Data Handling: Quillbot ensures that user data is encrypted and securely stored. However, like many AI tools, it does send data to its servers for processing, which may raise privacy concerns for some users. Third-Party Services: The tool uses third-party services for certain features, which could lead to data being processed outside of the EU. Users should be cautious when handling sensitive information.	9.7 AI Blaze takes security very seriously and holds a SOC 2 certification, which confirms that a company has implemented appropriate controls and procedures for IT systems, data protection, and data security. The company's privacy policies are transparent from the user's perspective in terms of how data is handled, and no user data is sold to third parties. The Business and Enterprise plans offer additional security features such as SAML SSO integration and audit logs. Choosing between different AI models gives users more control over their data. The company is transparent about its use of cookies and analytics and provides clear options for managing settings. There is also the option to allow the extension only to use marked areas for answers, normally, the AI uses the entire website content to have a better data basis.	8.0 Grammarly takes privacy seriously, with stringent security measures in place. While an account is required, the company assures users that their data is not sold or made public. However, some users may still have concerns about data processing.	9.5 LanguageTool takes privacy seriously. No account is required for basic features, and the tool ensures that user data is not sold or made public. This focus on privacy is a significant plus. LanguageTool states that it is GDPR compliant which makes it especially interesting for users in Europe.
Conclusion	Quillbot is a flexible AI writing tool that does a great job with paraphrasing and grammar checking. While it has a few minor downsides, like occasional mistakes and some privacy concerns, its overall performance and affordability make it a solid choice. In the end, choosing the best writing tool is also a matter of personal opinion. If you want to improve your writing and boost productivity, Quillbot is definitely worth a look. However, it still cannot compete with Grammarly as the best writing tool in this category. In our eyes, Grammarly is worth the more expensive price.	AI Blaze shows that it is an impressive productivity tool that delivers on its promise of saving time and optimizing communication. The user interface is intuitive and well-designed, making it accessible even for those without experience with AI tools. You can tell that companies in particular are also a target group. The ability to customize templates and train the AI to match your brand's voice is particularly valuable here. While the free version is somewhat limited, the affordable pricing of the paid plans makes it accessible to businesses of all sizes. The time savings alone justify the investment for teams that frequently send similar messages or create repetitive content. Individuals, however, may find it too expensive.	In our eyes, Grammarly is the best choice for anyone who wants to write professional articles or other things in English. Even though Grammarly has an expensice price tag, you can't get anything better on the market. We have been using Grammarly for a long time now. And even in the world of ChatGPT and other AI tools, Grammarly is just super handy and helpful. For us, the Premium plan is worth every penny. This only applies as long as you are in the English-speaking world. If you need other languages, we would recommend LanguageTool instead.	LanguageTool is a reliable and efficient writing assistant that supports multiple languages. Its advanced grammar and style checks make it a valuable tool for writers and professionals. While the premium version offers excellent features, the free version is somewhat limited. Overall, LanguageTool is a solid choice for anyone looking to improve their writing. Compared to Grammarly, LanguageTool holds its own, especially if you need to write in multiple languages. When it comes to writing in different languages, LanguageTool is the way to go. But if you’re only writing in English, Grammarly still delivers better results.
	Install Quillbot	Install AI Blaze	Install Grammarly	Install LanguageTool
Our Recommendation	In our comparison between Quillbot, AI Blaze, Grammarly, and LanguageTool, AI Blaze came out on top, scoring 9. Grammarly is the most widely used, with over 54 million users and 47k+ reviews, but AI Blaze outperformed it in our review. User reviews reflect our findings. Notably, AI Blaze has the highest user rating in the Chrome Web Store at 4.98, which supports its strong performance in our review. In the end, the differences between these extensions are minimal, so your choice may come down to personal preference or specific features. Looking for the richest feature set? Grammarly stands out with a rating of 9.5. On the other hand, AI Blaze lags behind in this area with a rating of 8.8. Need top performance? Grammarly stands out with a rating of 9. On the other hand, LanguageTool lags behind in this area with a rating of 8. Design lovers, take note: Quillbot stands out with a rating of 9. On the other hand, LanguageTool lags behind in this area with a rating of 8. Want to get the most for your money? LanguageTool stands out with a rating of 9.5. On the other hand, Grammarly lags behind in this area with a rating of 8.5. Ease of use? It's a tie: AI Blaze, Grammarly, and LanguageTool. In the Ease of Use category, AI Blaze has scored a fantastic 9. It is very easy to use, with an intuitive interface that facilitates a smooth user experience. With privacy and security becoming ever more important, AI Blaze stands out with a rating of 9.7. On the other hand, Grammarly lags behind in this area with a rating of 8. If you want a quick recommendation, AI Blaze is our top pick. But as always, the best choice depends on what matters most to you.