Merlin

Leverage AI to boost web productivity: draft, condense, code, and translate with ease.

Paidmerlin.foyer.workJun 4, 2026

Multi-Model AI Integration

Switch seamlessly between ChatGPT, GPT-4, Claude2, and Llama 2 to tap the strengths of each model for different tasks.

Cross-Website Assistance

Works on Gmail, LinkedIn, Twitter, YouTube, and most other websites, offering on‑page writing, translation, and content generation.

Content Summarization

Summarize YouTube videos, blog posts, articles, and documents in seconds, saving you hours of reading or watching.

Multi-Language Support

Input prompts and receive responses in over 25 languages, with real‑time translation built in.

Free GPT-4 Access

Enjoy a daily quota of GPT-4 queries even on the free tier, giving you cutting‑edge capabilities at no cost.

Code and Debugging Help

Ask Merlin to explain code snippets, generate boilerplate, or spot bugs directly from your browser tab.

What is Merlin?

Merlin is a Chrome extension that embeds advanced AI assistance directly into your browser. Available at merlin.foyer.work, it connects you to a suite of large language models – including ChatGPT, GPT-4, Claude2, and Llama 2 – while you work on your favorite websites. Whether you’re writing emails, summarizing articles, debugging code, or looking for a creative spark, Merlin turns everyday browsing into an AI-powered workspace without ever leaving the page.

Core Features

Multi-Model AI Integration: Switch seamlessly between ChatGPT, GPT-4, Claude2, and Llama 2 to tap the strengths of each model for different tasks.
Cross-Website Assistance: Works on Gmail, LinkedIn, Twitter, YouTube, and most other websites, offering on‑page writing, translation, and content generation.
Content Summarization: Summarize YouTube videos, blog posts, articles, and documents in seconds, saving you hours of reading or watching.
Multi-Language Support: Input prompts and receive responses in over 25 languages, with real‑time translation built in.
Free GPT-4 Access: Enjoy a daily quota of GPT-4 queries even on the free tier, giving you cutting‑edge capabilities at no cost.
Code and Debugging Help: Ask Merlin to explain code snippets, generate boilerplate, or spot bugs directly from your browser tab.
Email and Social Media Drafting: Compose, reply, and polish emails, tweets, and LinkedIn posts with one click.

Use Cases & Considerations

Use Cases

Content Creators: Instantly summarize research material, draft outlines, or generate catchy headlines while browsing sources.
Developers: Write and debug code faster by invoking Merlin on Stack Overflow, GitHub, or your IDE’s web console.
Marketers: Craft engaging social media copy, adjust tone of voice, and repurpose blog content into email newsletters without switching tools.
Students and Researchers: Condense lengthy academic papers or online lectures into key takeaways, making literature reviews much more efficient.
Non-Profits: Streamline grant writing, volunteer communication, and report generation with a handy AI assistant right in the browser.
Language Learners: Use real‑time translation and grammar corrections while reading foreign‑language websites to speed up comprehension.

Limitations & Considerations

Chrome-only: Works exclusively on Chromium browsers, so Firefox and Safari users must switch or find alternatives.
Daily query cap on free tier: While 102 queries is ample for casual use, power users and teams may hit the ceiling quickly.
Character count per query: Long prompts or translations into non‑Latin scripts might be truncated, hindering in‑depth work.
Always‑online requirement: Merlin needs an active internet connection; there is no offline mode.
Data privacy: Your browsing context and queries are processed on cloud servers – review the privacy policy before handling confidential information.
Model availability: GPT‑4 or Claude2 may occasionally be unavailable due to provider outages, which can temporarily limit advanced capabilities.

How to use Merlin

Install the extension from the Chrome Web Store by visiting merlin.foyer.work and adding it to your browser.
Pin the icon to your toolbar for easy access, then sign in or sign up to activate your free account.
Navigate to any website where you need help (e.g., Gmail, YouTube, LinkedIn) and highlight text or simply place your cursor where you want to work.
Open Merlin by clicking the toolbar icon or pressing the shortcut Cmd+M (Mac) / Ctrl+M (Windows).
Type your request – “summarize this article,” “write a polite reply to this email,” “translate to Spanish,” or “explain this code” – and pick the AI model if you prefer a specific one.
Insert the result directly into the page with one click, or copy it to your clipboard for later use.

Pricing & Plans

Merlin operates on a freemium model with a generous free tier and paid Pro plans for heavier users. The free plan includes 102 queries per day and access to all core models, including GPT-4. If you need unlimited queries, priority support, or early access to new features, you can upgrade to a Pro subscription – exact pricing is not publicly listed and may vary depending on your needs. Always check the official pricing page at merlin.foyer.work for the most current details.

Plan	Daily Queries	AI Models	Support
Free	102	ChatGPT, GPT-4, Claude2, Llama 2	Community
Pro	Unlimited (or custom)	All, plus early access features	Priority

Platforms

Chrome Extension: Available exclusively through the Chrome Web Store for all Chromium‑based browsers (Chrome, Edge, Brave, Arc, etc.).
Desktop‑optimized: Works on Windows, macOS, Linux, and ChromeOS – anywhere you run a desktop Chrome browser.
No mobile app: Currently, Merlin does not offer a dedicated mobile application; usage is confined to desktop Chrome.
API / SDK: There is no public API or software development kit for building custom integrations at this time.

Tips & Best Practices

Use keyboard shortcuts to summon Merlin in a flash without reaching for the mouse – Cmd/Ctrl+M is your best friend.
Be explicit about format – tell Merlin how you want the output structured (bullet points, a table, formal tone) to get better results on the first try.
Leverage summaries strategically – run a summary first to decide if an article or video is worth your full attention before diving in.
Test different models – GPT-4 excels at complex reasoning; Claude2 often shines for creative or nuanced writing; Llama 2 can handle code nicely. Experiment to find your favorite.
Keep template prompts handy – save frequently used queries (e.g., “Write a polite follow‑up to this email”) so you can paste and go.
Track your daily quota – on the free tier, note how many queries you’ve used so you can reserve them for the most impactful tasks.

Who is Merlin for?

Busy professionals who juggle dozens of emails, messages, and reports and need instant writing support.
Freelancers and remote workers looking for a light, always‑on assistant to handle summarisation, rewriting, and research.
Students and academics aiming to speed up literature reviews, note‑taking, and assignment drafting without separate tabs.
Non‑technical users who want to benefit from advanced AI without learning new tools or switching contexts.
Marketers and content strategists who need to draft, repurpose, and polish copy across multiple platforms on the fly.
Curious tinkerers interested in experimenting with multiple large language models in one friction‑free interface.

Alternatives

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Displays ChatGPT responses alongside your Google search results; good for quick look‑ups but limited to one model.

Monica

AI assistant powered by GPT‑4, Claude, and Bard, offering writing, summarization, and translation as a sidebar.

Sider

A sidebar that brings ChatGPT, Claude, and Bard into any website, with a focus on reading and writing aids.

MaxAI.me

Productivity sidebar with GPT‑4, Claude, and Bing AI, designed for research and content creation.

HyperWrite

AI writing assistant with a Chrome extension, specializing in long‑form content, emails, and documents.

Wordtune

Text refinement tool that helps rewrite sentences; not a general‑purpose assistant but excellent for polishing.

FAQ

Q1. Is Merlin really free to use?

Yes, Merlin provides a free tier with 102 queries per day, including access to GPT-4. You can upgrade to a paid Pro plan for unlimited usage and extra features, but the free plan is fully functional.

Q2. Which AI models does Merlin support?

Merlin integrates ChatGPT, GPT-4, Claude2, and Llama 2. You can manually switch between them or rely on the suggested model for each task.

Q3. Can I use Merlin on any website?

It is designed to work on most websites. While it’s especially polished on platforms like Gmail, LinkedIn, and YouTube, you can open Merlin on nearly any page where you can highlight text or place your cursor.

Q4. How does content summarization work?

Navigate to a blog post, article, or YouTube video, summon Merlin with the shortcut or icon, and ask it to “summarize this.” The AI will scan the visible content or page metadata and return a concise summary.

Q5. Does Merlin support other languages besides English?

Absolutely. Merlin supports more than 25 languages for both input and output, and you can ask it to translate text on the fly while browsing.