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Merlin: Multi-LLM & AI Macro

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Overview

Chat with Gemini, ChatGPT, Claude simultaneously. Use AI Prompt Optimization and Custom Web Macros for any site.

A service that allows you to use three AI LLMs (Gemini, ChatzyPT, and Claude) simultaneously. 1. All conversations are saved solely in the Chrome browser, not through the server. 2. English translation and prompts have been added to the basic conversations for more precise conversations. *Ctrl+Enter for general conversations. 3. Summarize the conclusion in the first sentence for quick information comparison. 4. You can use your own account to access your paid LLM accounts. *For non-subscribed accounts, only the free quota is used. 5. Using your own account, you can use all the features of each LLM. 6. You can have separate conversations for each LLM you've set. 7. You can also add other sites using custom slots. *Some sites may be blocked. 8. If you log in at the bottom, the slot order and customization settings are remembered. 9. You can drag to translate. ver.2.55 10. Clicking the logo hides the main chat window, allowing only the split window function. ver.2.56 Bug fixes ver.2.62(260213) * Frame Isolation Engine: Improved stability to ensure Merlin's automation runs strictly within its frames, preventing accidental interference with regular browser tabs. * Expanded AI Support: Fully integrated Grok (X.ai) Optimized Gemini conversation logic for better history tracking. * Persistent Layouts: Your custom bot arrangements, active status, and layout modes are now automatically saved and restored across sessions. * UI Optimization: Removed unnecessary animations and improved UI responsiveness for a more professional, high-performance experience. * Privacy & Compliance: Updated data handling practices to meet the latest security standards and minimize data usage. ver.2.67(260215) * Add custom URLs. * Activate macro functionality and enhance UX. 1. Register a custom site > 2. Mount it to the grid > 3. Click "Settings" in the top center > 4. Automate conversations and add logic > 5. Add input prompts > 6. Click the select target > 7. Click the dialog window where you want to apply the automatic prompt > 8. Add actions (Enter, Control-Enter, Click) based on the site > 9. Click the select target > 10. Start testing > 11. Save > 12. Chat in the main dialog window > 13. Confirm the chat has been sent to the custom site. ver.2.71(260220) * Added AI macros * Added a notification window * Disabled automatic translation in prompt dialogue * Added an LLM voting system * Added shortcut keys to each grid . . Your donation of a cup of coffee will help us create a better service. Thank you.

Details

  • Version
    2.7.1
  • Updated
    February 21, 2026
  • Features
    Offers in-app purchases
  • Offered by
    Led
  • Size
    261KiB
  • Languages
    English (United States)
  • Developer
    253-11, Gwanyang-ro, Dongan-gu, Anyang-si, Gyeonggi-do 13951 KR
    Email
    led@kakao.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

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Merlin: Multi-LLM & AI Macro has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

Merlin: Multi-LLM & AI Macro handles the following:

Personally identifiable information
User activity
Website content

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes
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