Compare Merlin AI and Recall: Which Extension is the Best?

Merlin AI is a browser extension and web app that unifies top AI models (ChatGPT, Claude, Gemini, Mistral) for research, summarizing, writing, coding, diagramming, translation, and more—directly in yo
With Recall, you can capture, summarize, and organize articles, PDFs, and videos with AI, spaced repetition, browser extensions, and strong privacy controls.
Key Features
  • Unified AI Models: Access ChatGPT, Claude, Gemini, Mistral, and more from one account—no need for separate logins.
  • Research & Summarize: Summarize web pages, YouTube videos, PDFs, and documents instantly.
  • Content Creation: Write emails, social media posts, blogs, and outreach messages with AI assistance.
  • Projects: Build custom AI chatbots using your own files, links, or knowledge ba
  • Crafts: Instantly generate code snippets, diagrams, and mindmaps
  • Live Search: Get up-to-date answers by searching the web in real time.
  • Multi-language Support: Translate content into 25+ languages.
  • Keyboard Shortcuts: Quickly summon Merlin with Ctrl/Cmd+M anywhere in your browser.
  • AI Summarization: Instantly summarizes articles, PDFs, YouTube videos, and more.
  • Personal Knowledge Base: Saves and organizes your summaries for easy retrieval.
  • Spaced Repetition & Active Recall: Helps you actually remember what you save, not just store it.
  • Augmented Browsing: Highlights related content as you browse, surfacing connections in your knowledge.
  • Browser Extensions: One-click saving and summarizing directly from Chrome or Firefox.
  • Editable Notebook: Add notes, highlights, and customize your saved content.
  • Tagging & Organization: Automatic and manual tagging, with support for nested tags.
  • Cross-Platform Sync: Works on desktop and mobile, keeping your knowledge base up to date.
Our Rating
8.4
8.9
Total users
1,000,000
73,229
Total ratings
8,802
95
Average rating
4.8 ⭐
4.1 ⭐
Entry Level PriceFreeFree
Chrome
Chrome Web Store logo
4.8
3.24
8.8K+ ratings
1.0M+Users
Chrome Web Store logo
4.2
4.14
78 ratings
70.0K+Users
Edge
-
-
Firefox
-
Mozilla Firefox Add-ons Store logo
3.9
3.94
17 ratings
3.2K+Users
Safari
-
-
Features
8.0

Merlin AI offers a variety of features including summarizing, writing, coding, diagramming and more. It supports multiple AI models such as GPT-4, Claude and Gemini and allows users to create custom AI chatbots and knowledge bases. The platform also integrates with the web and files in real time. However, some features, such as PDF summarization, are not as robust as those of specialized tools. It also lacks what we consider to be the important function of direct communication between AI and the current website. In addition, the function of direct communication between AI and the current website, which we consider important, is missing.

Missing Feature
9.2

Recall's range of functions is impressive for a relatively new tool. The AI summary works on a wide range of content, from articles to YouTube videos with a running time of several hours. We particularly liked the personal knowledge base and the way Recall automatically links related content. Spaced Repetition and Active Recall are outstanding features for students. However, some features are still in beta or will be available soon. The functions in the free version are severely limited in the number of users per day, and there is an upper limit for free use.

Performance
7.5

Merlin is generally fast and responsive, but it can slow down browsers, especially on older hardware. There are occasional bugs and crashes, though the team releases frequent updates and improvements.

9.0

Retrieval is fast and reliable in most cases. The summary is fast, even with very extreme examples such as a 9-hour news show that we had summarized in our test. Occasionally, we encountered errors or slowdowns, especially when asking further questions about the summarized content via the wizard. The team is actively working on performance improvements and there are regular updates. Overall, the tool feels stable and is suitable for everyday use.

Design
9.1

The design has a modern look and feel, with handy keyboard shortcuts and sidebar integration that make navigation easier. That said, the user interface can feel cluttered and overwhelming, especially for new users, and there are inconsistencies between the extension, web, and mobile versions.

Design
9.0

The user interface has a clear and modern design. The focus is on user-friendliness. We found the browser extension intuitive and easy to navigate. The tagging and organization system can be used flexibly, and some users mentioned minor bugs in the user interface, but these were only minimally noticeable in the test.

Value for Money
8.2

The free plan is generous for light users, offering a substantial daily quota and access to a wide range of basic features. The Pro plan is competitively priced, especially when compared to the cost of subscribing to multiple separate AI tools, and unlocks unlimited access to all models and advanced features. However, the absence of a free trial for premium features means users must commit before experiencing the full capabilities of Merlin AI. Additionally, some users report that the query system—where different models and features consume varying amounts of daily queries—can be confusing or feel restrictive, particularly for those trying to understand how far their usage will go on each plan.

8.1

The free tariff is suitable for infrequent users who do not need all the functions, as you will quickly reach the map limit. However, if you want to use the extension on a day-to-day basis, you cannot avoid the
extension. The paid plan is competitively priced, especially with the student discount. We appreciate that some features will remain free forever, and the team is open to feedback on pricing. Compared to alternatives, Recall offers good value for money for those who need advanced knowledge management features, but casual users may find the limitations too restrictive and stop using the extension.

Ease of Use
8.5

Getting started with Merlin AI is straightforward—installation is quick, and the onboarding process is simple enough for most users to begin using core features right away. However, the platform’s extensive feature set can be overwhelming at first, leading to a noticeable learning curve as users explore everything it offers. Some users have expressed confusion about how the daily query limits work, how different models are selected or switched, and which features are available on each plan. Occasional bugs and log-in issues can also disrupt the workflow, requiring users to troubleshoot or reach out to support. Overall, while Merlin AI is accessible, mastering its full capabilities may take some time and patience, especially for those new to AI tools.

8.0

An account is required to use Recall. However, due to the integration with a Google and Apple login, this should be easy for everyone.
Saving and summarizing content is a one-click process that is well explained at the beginning. However, mastering all functions (e.g., nested tags, links, and spatial repetitions) requires some time and some searching, which can lead to many users not being able to exploit the full potential.

Security & Privacy
9.3

Merlin does not sell user data to third parties and only uses data for core functionality. The privacy policy is transparent, but some users remain concerned about the amount of data collected and the permissions required.

9.9

Recall is characterized by its privacy-friendly approach. User data is not used by the extension for advertising, profiling, or AI training. All content is stored securely, and users retain full control over their data. Data can be exported for inspection or deleted at any time. The data protection guidelines are transparent, and support is always available to answer questions about data protection. We were unable to identify any uncertainties during our review.

Conclusion

Merlin AI is a powerful and versatile tool that can really boost the productivity of a wide range of users. The integration of multiple AI models and functions into a single extension is ideal for this p

However, Merlin is not completely perfect. We encountered occasional bugs, inconsistencies in the user interface and some performance issues. Pricing can also be confusing, and some features are locked behind a paywall..

Overall, Merlin AI is a good choice for anyone looking for an all-in-one AI assistant for the browser - especially if you value having multiple AI models and tools in one place.

Recall impressed us with its useful intelligent use of AI and its focus on helping users in their everyday lives, especially when learning. The browser extension makes it easy to capture content, and the revision features with auto-generated questions are a real bonus for learners.

For occasional users, the free version may be enough, but if you want to use the extension, you can't avoid the paid version. The extension is not yet perfect and has small bugs, but the team reacts quickly to these and feedback, and many new functions are currently being introduced.

Overall, Recall is a good choice for anyone looking to do more than just bookmark cards and build a personal knowledge base. If you're tired of forgetting what you've read online and want to save time, it's a must!

Our Recommendation

In our comparison between Merlin AI and Recall, Recall came out on top, scoring 8.9.

Merlin AI is the most widely used, with over 1 million users and 9k+ reviews, but Recall outperformed it in our review. User reviews for Recall reflect our findings, while we rate Merlin AI lower than users do.

Notably, Merlin AI has the highest user rating in the Chrome Web Store at 4.80, which is even higher than our rating of 8.4.

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? Recall stands out with a rating of 9.2. On the other hand, Merlin AI lags behind in this area with a rating of 8.
  • Need top performance? Recall stands out with a rating of 9. On the other hand, Merlin AI lags behind in this area with a rating of 7.5.
  • Design lovers, take note: Merlin AI stands out with a rating of 9.1. On the other hand, Recall lags behind in this area with a rating of 9.
  • Want to get the most for your money? Merlin AI stands out with a rating of 8.2. On the other hand, Recall lags behind in this area with a rating of 8.1.
  • If you hate complicated tools, Merlin AI stands out with a rating of 8.5. On the other hand, Recall lags behind in this area with a rating of 8.
  • With privacy and security becoming ever more important, Recall stands out with a rating of 9.9. On the other hand, Merlin AI lags behind in this area with a rating of 9.3.

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