Merlin

★★★★☆3.7 / 5 editorial Freemium Free plan with a daily query allowance. Paid plans expand the allowance and unlock all models; check the official site for current prices, which vary by billing period.

AI browser extension that summarises, writes and chats across your tabs

✓ Editor-verified listing — details reviewed by Grab AI Tool editors; pricing re-checked regularly.

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#chatbot#browser extension#summarize#multi-model#study help

What is Merlin?

Merlin is a Chrome and Edge extension that brings several top AI models into a single pop-up available on any page. Its party tricks are summarising YouTube videos, articles and PDFs where you find them, drafting social posts and emails in your tone, and answering questions about the page you are reading. A web app adds projects, saved prompts and team features.

Queries are metered: free users receive a daily allowance, and advanced models cost more queries per answer, which encourages picking the right model for each job. Paid plans multiply the allowance and unlock every model plus extras like AI detection tools and image generation. For students and content workers who want one assistant everywhere in the browser, Merlin is a solid, established option.

Key Features

Multi-model chat inside any browser tab
YouTube, article and PDF summaries in place
Writing help for emails and social posts
Saved prompts and project workspaces on the web app
Image generation and bonus writing tools

Pros

Video summaries are a real study time-saver
One extension covers chat, writing and reading
Long track record for a browser AI tool

Cons

Query-credit system can feel restrictive
Premium models drain allowance quickly
Interface packs in a lot of options

Pricing

Model: Freemium
Free plan with a daily query allowance. Paid plans expand the allowance and unlock all models; check the official site for current prices, which vary by billing period.

Adding Up Your AI Bill?

If you pay for Merlin alongside other AI subscriptions, the monthly total adds up quietly. Tick every tool you pay for in our free AI Tool Cost Calculator to see your real monthly and yearly bill — and spot overlaps you can cut. Still choosing? Start with our guide on how to choose the right AI tool.