Compare Merlin AI and AdBlock: 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
AdBlock is a popular browser extension with over 60 million users, designed to block ads, enhance privacy, and improve browsing speed. Read our detailed review to see how it performs.
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.
  • Blocks Ads: Removes pop-ups, banners, and video ads for a cleaner browsing experience.
  • Protects Privacy: Stops websites from tracking you and blocks harmful ads.
  • Sync Across Devices: Premium users can sync settings across multiple browsers.
  • Customizable: Change the look and feel of the extension, even swap ads for cute images.
  • YouTube Limitations: Works great on most sites, but struggles with blocking YouTube ads.
Our Rating
8.4
8.2
Total users
1,000,000
76,543,424
Total ratings
8,802
295,546
Average rating
4.8 ⭐
4.2 ⭐
Entry Level PriceFreeFree
Chrome
Chrome Web Store logo
4.8
3.24
8.8K+ ratings
1.0M+Users
Chrome Web Store logo
4.5
2.43
290.5K+ ratings
58.0M+Users
Edge
-
Microsoft Edge Store logo
3.8
3.62
1.5K+ ratings
17.3M+Users
Firefox
-
Mozilla Firefox Add-ons Store logo
4.2
3.73
3.5K+ ratings
1.3M+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
8.5

Ad blocking:

The free version blocks annoying advertisements on websites. With the premium version, additional functions such as the blocking of cookie banners or pop-ups can also be activated.

Cookie

Privacy and Security:

AdBlock blocks third-party trackers on every Website and protects your privacy. It also blocking malicious ads with malware, scams, and cryptocurrency miners.

security

Sync & Backup:

With the Premium version, whitelists and user-defined rules can be synchronized across Chrome profiles.

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.

8.0

The ad blocker extension generally works without slowing down the browser on most websites. However, recent changes at YouTube have meant that AdBlock has not yet managed to ban ads from YouTube again.

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
8.5

The user interface is clearly laid out. With the premium version, you can also use functions to make individual adjustments. You're in control of the look, feel, and font size of AdBlock with easy-to-use controls. There is also the Image Swap function, which will still block ads, but it will replace some ads with pretty pictures of cats, dogs, and nature.

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.

7.5

The free version offers good value for money. Compared to other competitors, the premium functions may be somewhat more expensive. Some premium functions are offered free of charge by other providers.

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.

7.8

Installation is done in one click. However, you are immediately redirected to a website that informs you that payment is required to use it. However, this is only a voluntary donation.
Basic functions are used from this point on. Some settings are set to allow non-intrusive ads and special ads on YouTube, for example. This must first be actively switched off in the settings.

allow ads
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.

9.0

Strong privacy protection through the premium feature malware blocking. The privacy policy is transparent without any indication of data being passed on.

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.

AdBlock is a reliable tool for blocking basic ads. While it blocks most ads and still protects your privacy by preventing tracking, recent updates have failed to prevent ad videos on YouTube. It's a good choice for anyone looking for a simple and reliable adblock extension.

Our Recommendation

In our comparison between Merlin AI and AdBlock, Merlin AI came out on top, scoring 8.4.

AdBlock is the most widely used, with over 77 million users and 296k+ reviews, but Merlin AI outperformed it in our review. User reviews for AdBlock 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? AdBlock stands out with a rating of 8.5. On the other hand, Merlin AI lags behind in this area with a rating of 8.
  • Need top performance? AdBlock stands out with a rating of 8. 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, AdBlock lags behind in this area with a rating of 8.5.
  • Want to get the most for your money? Merlin AI stands out with a rating of 8.2. On the other hand, AdBlock lags behind in this area with a rating of 7.5.
  • If you hate complicated tools, Merlin AI stands out with a rating of 8.5. On the other hand, AdBlock lags behind in this area with a rating of 7.8.
  • With privacy and security becoming ever more important, Merlin AI stands out with a rating of 9.3. On the other hand, AdBlock lags behind in this area with a rating of 9.

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