Merlin
Merlin combines models from OpenAI, Anthropic, Google and others with a Chrome extension, Projects, diagram generation and image tools, available on web, Mac, iOS and Android.
What is Merlin?
Merlin is an all-in-one AI assistant that gives access to models from OpenAI, Anthropic, Google, DeepSeek and others through a web app, a Chrome extension, a Mac app and mobile apps. Its best-known component is the browser extension, which can summarise pages and YouTube videos, help write emails and social posts, and answer questions about whatever site you are on.
Merlin targets students, marketers, developers, founders and consultants who want several AI models and a large set of writing and research tools in one subscription. The service says it is available in more than 200 countries.
Key Features of Merlin
Multiple AI models in one chat
Users can switch between models from several providers, with newer premium models reserved for paid plans.
Chrome extension
The extension brings Merlin to any website: summarising articles and search results, drafting Gmail replies, writing posts and replies on X and LinkedIn, and chatting with YouTube videos.
Projects
Projects act as reusable knowledge bases. You can add documents, brand guidelines or course material and query them repeatedly for consistent answers.
Crafts
Crafts generate flowcharts, mind maps, charts and other diagrams from a prompt, as well as small working web components and code snippets.
Image and video generation
Merlin supports a range of image models and aspect ratios, with advanced image and video generation on Pro.
Custom bots and prompt library
Users can save prompts for one-click reuse and build custom chatbots that combine instructions with their own knowledge.
Merlin Pricing
Merlin offers a free plan and paid individual and team plans. The prices below are for yearly billing, which the site says saves 35% compared with paying monthly.
Prices checked on October 27, 2026; check the official pricing page for current plans.
When checked, the pricing page also displayed a special-offer banner advertising Merlin Pro for $2 a month; the conditions are shown at checkout. Pro is subject to fair use limits rather than being truly unlimited, and extra credits can be bought as top-ups. See the official Merlin pricing page for current prices.
Who Should Use Merlin?
- Students summarising lectures, PDFs and videos into study notes.
- Marketers and creators repurposing web content into posts and blogs.
- Professionals who want AI help directly inside Gmail, X and LinkedIn.
- Developers prototyping components and debugging with context.
- Users in regions where some AI services are not directly available.
Is Merlin Worth It?
Merlin offers good value if you want several premium models plus a capable browser extension for the price of one subscription. Its wide platform coverage and features like Projects and Crafts make it more than a simple chatbot wrapper.
On the downside, the free plan is fairly limited, Pro usage is governed by fair use limits that are proportional to the price paid, and the context window may be smaller than in some providers' own apps. If you rely on one model's newest features, a direct subscription may serve you better. Visit the official Merlin website to try it free.