Local AI app and developer runtime for running, chatting with, and serving open models privately.
Merlin
Merlin is a groundbreaking AI tool that promises to revolutionize how we interact with the internet. At its core, Merlin is a Chrome extension that brings the power of AI,

What to know
Key features
- Multi-model access including GPT-4o, Claude 3.7, and Gemini 2.5 Pro
- One-click summarization of YouTube videos, blogs, and PDFs
- AI-powered email drafting and response generation for Gmail
- Social media content and reply generation for LinkedIn and X
- AI-enhanced search results appearing alongside Google search
- Interactive document chatting (DocChat) for PDFs and PPTs
Best for
- Summarizing long articles and YouTube videos for rapid research
- Drafting professional emails and high-engagement social media posts
- Comparing outputs from different LLMs for the same prompt
- Repurposing video content into blogs, tweets, or articles
- Analyzing and extracting insights from large PDF documents
Pros
- Centralized access to multiple top-tier AI models in one subscription
- Seamless browser integration reduces need for tab-switching
- Generous free tier allowing 100+ queries per day
Cons
- Pro plan 'unlimited' access is subject to hidden fair use caps
- Functionality is primarily limited to the Chrome browser
- Feature set can feel bloated and overwhelming for simple users
Merlin FAQ
What is Merlin used for?
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