Generate content, correct spelling, suggest synonyms to enhance writing.
Merlin AI
Chrome extension and web app that generates AI responses on websites, summarizes videos/blogs, and writes social media posts.

About Merlin AI
Merlin AI is a Chrome extension and web app that functions as an AI-powered browsing assistant, designed to enhance online productivity. It provides access to multiple leading AI models, including ChatGPT, GPT-4, Claude, Opus, Llama, and Mistral, all through a single account. Users can generate AI responses directly on various websites such as Google search, LinkedIn, and Twitter, enabling faster and more efficient interactions. The tool includes features like summarizing YouTube videos, blogs, documents, and web pages, as well as drafting and replying to social media posts. Merlin AI also supports writing emails, generating replies, and providing summarized search results. Additionally, it offers capabilities like chatting with and summarizing PDFs, assisting with Amazon shopping, and even simulating chats with Twitter profiles. The tool is particularly useful for professionals such as content writers, marketers, researchers, and tech enthusiasts who need to streamline their online tasks and improve efficiency. It is also suitable for individuals looking to enhance their personal productivity while browsing the web.
Key features
- Access to multiple AI models (ChatGPT, GPT-4, Claude, Opus, Llama, Mistral)
- Summarize YouTube videos, blogs, documents, and web pages
- Generate and reply to social media posts on LinkedIn and Twitter
- Write and summarize emails quickly
- Provide summarized and descriptive Google search results
- Chat with and summarize PDFs
- Assist with Amazon shopping queries
- Simulate chats with Twitter profiles
- Multi-functional AI assistant for various online tasks
Use cases
- Summarize lengthy articles or research papers for quick understanding
- Draft and schedule social media posts across platforms
- Generate email replies or drafts to save time on correspondence
Pros
- Provides instant access to multiple leading AI models (e.g., ChatGPT, GPT-4, Claude, Llama, Mistral) through a single account
- Offers cross-platform functionality with a Chrome extension, web app, and mobile apps for iOS and Android
- Enables one-click summarization, research, and content creation directly from web pages, videos, and documents
- Supports multilingual interactions and is accessible in regions where some AI models are restricted
- Includes advanced features like custom prompt libraries, knowledge bases, and app snippet generation
Cons
- May require familiarity with AI tools to fully utilize advanced features like custom bots and knowledge bases
- Dependent on internet connectivity for real-time AI model access and cloud-based operations
- Potential privacy concerns with handling sensitive data, despite industry-standard security certifications
Frequently asked questions about Merlin AI
What AI models does Merlin AI support?
Merlin AI provides access to multiple leading AI models, including ChatGPT, GPT-4, Claude 3.7 Sonnet, DeepSeek R1, Gemini 2.5 Pro, Mistral Large, Llama 3.1, Grok 3, and others. New models are added as they become available.
How does Merlin AI work within a web browser?
Merlin AI operates as a Chrome extension and web app, allowing users to access AI capabilities directly on websites like Google, LinkedIn, and Twitter without switching tabs. It provides one-click answers, summarization, and content generation.
Can Merlin AI summarize videos and documents?
Yes, Merlin AI can summarize YouTube videos, blogs, web pages, and PDFs. It also supports transcribing YouTube videos and converting them into posts or blogs.
Is Merlin AI available on mobile devices?
Merlin AI is available as a Chrome extension for desktop browsers and as mobile apps for iOS and Android, with synced history and access to custom prompts across devices.
What are Merlin Projects and Crafts?
Merlin Projects allows users to create reusable knowledge bases and conduct research with real-time information. Merlin Crafts enables generating diagrams, mindmaps, and interactive charts from prompts.
Does Merlin AI offer multilingual support?
Yes, Merlin AI supports multiple languages and is accessible in over 200 countries, including regions where some AI models may be restricted.
Merlin AI traffic & engagement
getmerlin.in · third-party estimates from Similarweb
Traffic trend
Last 4 months · grows by one month every month
- Jun 20261.4M
- Jul 20261.4M−1%
- Aug 20261.2M−13.8%
- Sep 20261.2M+3%
Top countries
Share of visits · estimated visits
Other countries: 53.2%
Visits sent by AI assistants
How people reach this site from other AI tools
9K a month · 0.7% of all visits
Compared with similar tools
Productivity & Office · Sep 2026
Traffic figures are third-party estimates, good for scale and trends; they can differ from a company's own numbers. Updated monthly.