MCP vs. RAG for world knowledge?

As I’m navigating the best setup for using Qwen3.8 27b as both my main coder and my personal assistant, I want to hook it into Wiki & beyond but I don’t want to be reliant on an internet connection. What I’ve started doing is taking the general ZIM download of Wiki and embedding it into my RAG. Which will take a little while to do. Maybe a couple of weeks of 24/7 embedding. And that’s once a year and doesn’t touch all the other databases I want in my RAG. What I didn’t realize is that people are instead making MCP servers to instantly hook into these ZIM files from Kiwix and such. Projects like: https://github.com/cameronrye/openzim-mcp My question is, before I have my own experiences with it, what’s been anyone’s impression with going the route of MCP instead of RAG for things like this? Has retrieval/query quality suffered or actually beaten a RAG? On a side note, in case it comes up, I found Qwen3.6 to stomp Gemma 4 31b into the ground on this kind of work. I have tool calling for things like APIs and such in this project and while Gemma is a great writer, I do finally see why it’s so lazy. I abandoned 3.6 months ago for this job and then once I wired it up in anticipation for 3.8, a lot of the issues I had with Gemma disappeared. It’s a good writer, incredibly lazy model for this type of work. Qwen was eager to keep working and exhaust the bucket, but Gemma was always fine with just doing a bit. submitted by /u/vick2djax [link] [comments]

Related

• Long Review: Qwen 3.8 27B is VERY good at tapping into it's real-world knowledge. It's 'overthinking' brings it to Sonnet level performance with the potential for Opus level results.
• What's the best tool for offline Wikipedia RAG at the moment?

Source: r/LocalLLaMA | 2026-08-22