Compare Monica and Voila: Which Extension is the Best?

Monica is an all-in-one AI assistant offering multi-model chat, image/video generation, PDF analysis, translation, and smart writing tools across browser, desktop, and mobile platforms.
Voilà is a browser-based AI assistant that helps you write, research, and boost productivity on any website, all while keeping your data private and respecting your privacy
Key Features

Multi-Model AI Chat: Access GPT-4o, Claude 3.5, Gemini 2.5, DeepSeek V3, and more in one interface

Image & Video Generation: Create visuals using DALL-E 3, Flux Pro, and other advanced models

Document Analysis: Upload PDFs and chat with them using ChatPDF functionality

Webpage Summarization: Get instant summaries of any webpage or YouTube video

Smart Writing Tools: Compose emails, rewrite content, and bypass AI detection

Translation Suite: Translate text, PDFs, and compare translations across multiple AI models

Voice Support: Use microphone input for hands-free interaction

Cross-Platform Sync: Access your AI assistant from browser, desktop, and mobile

Universal Website Integration: Works on any website with context awareness

Gmail Integration: Seamless email drafting and AI-powered instant replies

Expert Prompt Library: Pre-built prompts for various content types

Web Research: Real-time information gathering with reliable sources

Multi-language Support: Works in over 50 languages

Cross-platform Availability: Browser extension, desktop, and mobile apps

Privacy-First Design: GDPR compliant with no data storage on servers

Our Rating
8.7
9.1
Total users
3,828,289
91,618
Total ratings
31,110
248
Average rating
4.7 ⭐
4.3 ⭐
Entry Level PriceFreeFree
Chrome
Chrome Web Store logo
4.9
4.89
30.2K+ ratings
3.0M+Users
Chrome Web Store logo
4.7
4.82
210 ratings
80.0K+Users
Edge
Microsoft Edge Store logo
4.6
4.42
909 ratings
828.3K+Users
Microsoft Edge Store logo
4.1
4.11
9 ratings
7.9K+Users
Firefox
-
Mozilla Firefox Add-ons Store logo
4.2
3.96
29 ratings
3.7K+Users
Safari
-
-
Features
9.2

Monica’s feature set is impressively comprehensive, supporting nearly every AI use case you might need. With access to multiple models—including GPT-4o, Claude 3.5, Gemini 2.5, and DeepSeek—you’re not limited to a single AI’s strengths or weaknesses. Notable features include document analysis, which lets you upload PDFs and have interactive conversations about their content, and advanced image and video generation powered by models like DALL-E 3 and Flux Pro.

The writing tools go beyond basic text generation, offering email composition, content rewriting, and even AI detection bypass. The translation suite is robust, allowing you to compare translations across different models for accuracy, and the voice support feature makes hands-free use easy. The prompt library, accessible via quick ‘/’ commands, is a thoughtful addition that speeds up common tasks. While some advanced features are reserved for paid plans, the free tier still provides substantial functionality.

Summarize
9.0

Voilà's features are impressively comprehensive and cover many areas, from simple AI chat to advanced content creation tools.
The library of pre-built expert prompts for various requirements is particularly valuable. This often allows you to get the right result without having to write anything yourself.

prompts

The integration with Gmail works flawlessly and makes email management much more efficient. The ability to respond to emails in a context-sensitive manner sets the tool apart from many of its competitors.

Mail

On websites, it is first necessary to highlight the desired text. However, if you want a summary of the website, for example, this is not a problem because you can simply highlight the entire website. A context-based AI chat that has access to the context of the current website would improve this even further.

Summarize

Overall, the extension offers very powerful features, some of which are not even found in competitors' products.

Performance
8.6

Monica performs reliably across different platforms and use cases. The browser extension loads quickly and responds promptly, and switching between AI models is seamless with minimal delay. Image generation features work well, though processing times can vary depending on the complexity of the request.

Document analysis handles various file formats effectively, though larger files may take longer to process. Voice input is consistent and accurate across browsers, and the mobile app maintains good performance, though it can be slightly slower for complex tasks. Cross-platform sync works reliably, ensuring your conversations and settings are available everywhere. The extension does not significantly impact browser performance or cause slowdowns. However, some advanced features can experience occasional delays during peak usage times. Overall, Monica’s performance is solid and consistent, making it suitable for both casual and professional use.

8.7

In our test, Voilà consistently delivered good performance on various websites and in different use cases. The AI responses are usually fast and relevant. The extension has no noticeable impact on browser performance. Some users report occasional delays during peak times, but this is common with AI tools. The tool processes large documents and complex queries without any problems.

Design
8.7

Monica’s interface strikes a strong balance between functionality and usability. The design is clean and modern, with a sidebar and layout that keep things organized even with a large number of features. The color scheme is pleasant and easy on the eyes, and navigation between different AI models and tools is intuitive.

The image generation and chat interfaces are particularly well-designed, making it easy to create, refine, and interact with content. Settings and customization options are easy to find, and the mobile app maintains consistency with the browser extension, which is impressive for cross-platform design. However, the sheer number of features can feel overwhelming at first, and while the learning curve is manageable, new users may need some time to discover all available options. More customization options would be helpful for power users who want to tailor the interface to their needs.

9.3

The user interface is clear and intuitive. The seamless integration with Gmail is particularly well done.
Dark mode and customizable designs improve the user experience. The extension does everything it can to avoid overwhelming users with information, allowing them to learn new areas of application step by step.

Value for Money
8.3

Monica delivers excellent value, especially since it provides access to multiple premium AI models in one package. The free tier is generous, offering 40 daily uses of basic models—more than most competitors—making it accessible for casual users. The Pro plan at $99/year offers substantial value for power users, with 5,000 monthly basic model accesses and 200 advanced model accesses.

Compared to subscribing to individual AI services, Monica’s pricing is competitive, and the unlimited plan at $149/year is a great deal for heavy users. Cross-platform availability adds further value, as you’re not paying for separate mobile and desktop apps. The comprehensive feature set means you’re getting multiple tools in one package. However, the jump from free to paid is significant, which might deter some users, and a middle pricing tier would be helpful for moderate users. Overall, the value proposition is strong, especially for those who would otherwise need multiple AI subscriptions.

8.9

The free plan offers a good introduction to Voilà's features, but is quite limited. The premium plan for $6 per month offers excellent value for money for anyone who finds that they use the tool regularly after using up their free requests. In our opinion, the advanced features, such as chatting with YouTube videos and generating images, justify the price. For frequent users who also want to use AI for their documents or chat with images, the Ultimate version is worthwhile. At $14, the price is still relatively inexpensive compared to competitors with similar features.

Ease of Use
8.3

Monica excels in ease of use, with a quick setup process that gets you started in minutes. The keyboard shortcut (Cmd/Ctrl + M) makes it convenient to access from any webpage, and the interface is intuitive enough for most users to begin using it effectively without tutorials. Switching between AI models is straightforward, and the voice input feature works reliably, adding significant convenience for hands-free use.

The prompt library with quick access commands speeds up common tasks, and uploading documents is simple, supporting various file formats. The mobile app matches the browser extension in usability, ensuring a consistent experience across devices. While the extensive feature set can initially feel overwhelming, the learning curve is gentle, and features are discoverable through natural exploration. Some advanced features may require more time to master, and the help documentation could be more comprehensive for complex tasks.

9.4

Voilà offers an excellent balance between performance and simplicity. The tutorial system is well-designed and suitable for beginners. The keyboard shortcuts make navigation intuitive once you have learned them. The context-sensitive functions work automatically, so manual configurations are rarely necessary. Creating custom prompts and actions takes some time to learn, but it is worth the effort.

Security & Privacy
9.3

Monica demonstrates a strong commitment to user privacy, which is refreshing in the AI space. The privacy policy is clear: user data is not sold or monetized, and only necessary information is collected for service functionality. The company is transparent about its data practices, explicitly stating that it does not track browsing habits or chat content beyond what’s needed for the service.

The privacy policy is comprehensive, covering GDPR and CCPA compliance, and data is encrypted both in transit and at rest. Reputable third-party services are used for payment processing, ensuring financial data security. User content is stored only as needed for the history feature, and users have control over their data. The privacy commitment extends to the business model, which does not rely on advertising or data selling. However, as with any AI service, users should be aware that their inputs are processed by third-party AI models, which may have their own privacy implications.

9.0

Data protection is a high priority for Voilà. The extension complies with the GDPR and transparently lists its data processing methods. The tool does not store conversations on its servers, which is important for companies, among others. The privacy policy is comprehensive and explains data usage clearly and concisely. The option to use your own API keys offers additional control and flexibility for anyone who needs it. The only minor criticism is the use of third-party analytics tools, which is a common practice for such extensions.

Conclusion

Monica represents a significant step forward in AI assistant technology by consolidating multiple powerful models into one accessible platform. Our testing revealed that it delivers on its promise of being a comprehensive AI tool that can handle virtually any task you throw at it.

The extension's strength lies in its versatility and ease of use. Whether you need help with writing, research, image creation, or document analysis, Monica provides a consistent and reliable experience. The cross-platform availability means you can access your AI assistant wherever you work.

However, Monica isn't without its limitations. The free tier, while generous, has clear restrictions that might push users toward paid plans. Additionally, the interface can feel overwhelming at first due to the sheer number of features available.

Overall, Monica is an excellent choice for users who want a comprehensive AI assistant without the hassle of managing multiple subscriptions or accounts. It's particularly valuable for professionals who need reliable AI assistance across different tasks and platforms.

Voilà impressed us with its seamless integration, especially with Gmail, and its powerful AI features. It is a tool that simply aims to integrate AI into everyday life for every user in order to simplify everyday tasks.

The free plan allows you to test it out sufficiently, and if you're convinced, the Pro plan offers excellent value for anyone who values productivity. The tool's ability to respond to emails contextually and directly integrate highlighted text from any website sets it apart from the competition. The only thing that could improve it is the ability to directly integrate the current website without highlighting text.

We recommend Voilà for professionals, content creators, and anyone who wants to optimize their AI-powered workflow without sacrificing privacy or functionality.

Our Recommendation

In our comparison between Monica and Voila, Voila came out on top, scoring 9.1.

Monica is the most widely used, with over 4 million users and 31k+ reviews, but Voila outperformed it in our review. User reviews reflect our findings.

Notably, Monica has the highest user rating in the Chrome Web Store at 4.75, 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? Monica stands out with a rating of 9.2. On the other hand, Voila lags behind in this area with a rating of 9.
  • Need top performance? Voila stands out with a rating of 8.7. On the other hand, Monica lags behind in this area with a rating of 8.6.
  • Design lovers, take note: Voila stands out with a rating of 9.3. On the other hand, Monica lags behind in this area with a rating of 8.7.
  • Want to get the most for your money? Voila stands out with a rating of 8.9. On the other hand, Monica lags behind in this area with a rating of 8.3.
  • If you hate complicated tools, Voila stands out with a rating of 9.4. On the other hand, Monica lags behind in this area with a rating of 8.3.
  • With privacy and security becoming ever more important, Monica stands out with a rating of 9.3. On the other hand, Voila lags behind in this area with a rating of 9.

If you want a quick recommendation, Voila is our top pick. But as always, the best choice depends on what matters most to you.