llm-router vs Memory (Knowledge Graph)

A side-by-side comparison of two AI, Data & Knowledge servers — tools, transport, auth, maintenance, and copy-paste config for each.

	llm-router Local-first LLM router for AI coding tools — routes prompts to the cheapest capable model with automatic provider fallback. Unverified stdio (local) No auth Python	Memory (Knowledge Graph) Official MCP server providing persistent, file-backed knowledge-graph memory across sessions. Verified stdio (local) No auth TypeScript
Category	AI, Data & Knowledge	AI, Data & Knowledge
Language	Python	TypeScript
Transport	stdio (local)	stdio (local)
Auth	None	None
GitHub stars	33	74k
Last commit	5 days ago	5 months ago
Verified
Actively maintained
Install	`pip install llm-routing && llm-router install`	`npx -y @modelcontextprotocol/server-memory`
Repo	Open	Open

Verdict

Pick llm-router if you need the broadest set of tools.

Pick Memory (Knowledge Graph) if you want the official, vendor-maintained server, and you prefer the more popular, battle-tested option.

Add llm-router

Install / run

pip install llm-routing && llm-router install

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "llm-router": {
      "command": "llm-router",
      "args": [
        "install"
      ]
    }
  }
}

Add Memory (Knowledge Graph)

Install / run

npx -y @modelcontextprotocol/server-memory

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "memory-knowledge-graph": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-memory"
      ],
      "env": {
        "MEMORY_FILE_PATH": "/absolute/path/to/memory.jsonl"
      }
    }
  }
}

FAQ

llm-router or Memory (Knowledge Graph) — which is better?

Pick llm-router if you need the broadest set of tools. Pick Memory (Knowledge Graph) if you want the official, vendor-maintained server, and you prefer the more popular, battle-tested option.

Can I use both llm-router and Memory (Knowledge Graph)?

Yes — MCP clients let you enable multiple servers at once. Add both configs to your client's mcpServers and use whichever tool fits the task.

Do llm-router and Memory (Knowledge Graph) work with Claude, Cursor and Windsurf?

Both do. Copy the per-client config below into Claude Desktop, Cursor, or Windsurf.

View llm-router →View Memory (Knowledge Graph) →More comparisons →