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Merlin

Visit Merlin

Pricing: Free

Editor rating: 4.9/5

Updated: July 2026

Merlin brings ChatGPT, GPT-4, Claude, Llama to websites for email writing, summarization, coding.

Editor's take: “Industry-defining LLM, unmatched versatility and ecosystem” — Sohail Akhtar

Free tier (verified July 2026): Free browser extension tier

Top Alternatives

Editor's Verdict

Official Review

Merlin embeds GPT-4, Claude, Llama, and other models directly into Gmail, Google Docs, LinkedIn, and Twitter without tab switching — and the free tier is genuinely unlimited for basic queries. It works well as a browser-side AI shortcut layer for writers, marketers, and researchers who want AI contextually rather than in a separate window. Model quality ceilings depend on the upstream providers; Merlin itself adds convenience, not capability.

4.9 / 5.0

Editor Rating

Reviewed by Sohail Akhtar

Lead Editor & Founder

Pros

What we like

Access to multiple AI models (GPT-4, Claude, Llama) from a single browser extension
Works natively inside Gmail, Google Docs, LinkedIn, and Twitter without leaving the page
Completely free for basic unlimited usage — no trial period or credit card required
Instant article and email summarization directly in context

Cons

Limitations

Model quality depends entirely on upstream providers — Merlin adds access, not AI improvements
Requires browser extension permissions that read page content across all sites you visit
Heavy GPT-4 usage may require a paid upgrade once free-tier limits are reached

Pricing

✓ Free tier re-verified July 2026: Free browser extension tier

Completely free.

What is Merlin?

Merlin Chrome extension embeds multiple AI models (ChatGPT, GPT-4, Claude 2, Llama 2) directly into Gmail, Google Docs, LinkedIn, Twitter for instant email writing, article summarization, code generation, and content creation. Productivity users access AI everywhere without tab switching. Free unlimited basic usage.

Associated Tags

chrome ai extension, gpt-4 browser ai, gmail ai writer, linkedin ai assistant, multi-model ai access

Key Features

ChatGPT/GPT-4/Claude access

Gmail/Docs/LinkedIn integration

Article summarization

Code generation anywhere

No tab switching needed

Real Use Cases

How professionals leverage Merlin - Chrome AI Extension with ChatGPT GPT-4 Claude Access

Discover practical workflows and real-world scenarios where Merlin delivers key solutions.

Writers drafting and editing emails in Gmail without switching to a separate AI chat window

Marketers generating LinkedIn post copy or Twitter thread drafts directly in-context

Researchers summarizing long articles, PDFs, or documentation pages while reading them

Developers generating code snippets while working inside GitHub or technical documentation

Top Alternatives

Dedicated alternatives page →

Free

Sider

Chrome extension sidebar AI - free access to GPT-4o/Claude 3.5/Gemini on any webpage. Summarize/translate/write without tab switching. 2M+ Chrome Web Store users.

#Extensions Chatgpt #AI Chat and Assistant+2

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Free