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Merlin screenshot
AI Productivity·Freemium

Merlin

Browser extension that puts GPT and Claude in the sidebar of any page, with built-in chat history.

What is Merlin, in two sentences

Merlin is a browser extension that puts GPT and Claude in the sidebar of any page, with built-in chat history. Runs as a browser extension that overlays GPT and Claude in a sidebar on any webpage.

About Merlin

Merlin is a browser extension that puts GPT and Claude in a sidebar on any webpage, with built-in chat history.

It overlays both OpenAI GPT and Anthropic Claude in one sidebar interface, so you can use either model on any page and review past conversations from built-in history.

It fits people who want an AI assistant beside whatever they are reading, on a freemium plan with free use plus paid upgrades. It is a poor fit if you need heavy daily volume, since the free tier caps daily queries, or if you work outside the browser, since it is not a native desktop or mobile app. Model choice is limited to GPT and Claude, with no other providers or local models.

Sources: this listing

Merlin pros and cons

Pros

  • Runs as a browser extension that overlays GPT and Claude in a sidebar on any webpage.
  • Supports both OpenAI GPT and Anthropic Claude models from a single interface.
  • Includes built-in chat history for reviewing previous conversations.
  • Offered on a freemium pricing tier, allowing free use with paid upgrades.

Cons

  • The free tier limits the number of daily AI queries users can make.
  • Model selection is restricted to GPT and Claude, with no support for other providers or local models.

Tagged

  • Supports Claude
  • Supports GPT
  • Web-based
  • Free
  • Freemium

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Frequently asked questions

What is Merlin?
Merlin is a browser extension that puts GPT and Claude in the sidebar of any page, with built-in chat history.
Is Merlin free?
Merlin offers a free tier and paid plans with higher limits or premium features.
What platforms does Merlin support?
Merlin runs on web.
What are the alternatives to Merlin?
Similar tools in AI Productivity on vibedonalds: Skilldocs, Oasis, BearDrive, Grok Bot.
What are the downsides of Merlin?
The free tier limits the number of daily AI queries users can make. Model selection is restricted to GPT and Claude, with no support for other providers or local models.