Merlin

Based on several Zhihu tutorials and recommendations, Merlin appears usable as a lightweight ChatGPT browser assistant, but large-scale in‑depth reviews and long‑term feedback are lacking. It can be cautiously adopted as a convenient helper. What it does: With a shortcut (Ctrl/Cmd+M), it invokes ChatGPT on any page, summarizing YouTube videos, Google search results, Medium/Substack posts, and integrating with Gmail or Google Docs. Installation is trivial. Pricing: No official cost information is available; early social mentions (often mixed with Sider) hinted at free access, but ChatGPT API costs may apply – users should verify. Ideal for: Content creators, students, and researchers who frequently extract online info or need quick drafting. Not for: Users requiring offline AI, complex workflows, or strict data privacy. It is not a standalone AI model; think of it as a browser extension front‑end for ChatGPT, akin to Sider or Monica. Social consensus & discussion quality: Zhihu posts (36 upvotes, 18 comments) provide some attention, but mostly as basic walkthroughs with little critical comparison.