Geek Out Time: Routing Meets Retrieval-Context-Aware Multi-Agent Orchestration with AG2 + FAISS

In the last geek out time, we built a hybrid router for AG2 (formerly Autogen)that selected the right agent using embeddings, falling back to GPT-4 when needed. That handled the routing decision well — but what if the user query is vague or missing context?

This week I added a lightweight retrieval layer using FAISS, but also reworked the routing logic to make it more robust and production-aligned. The router now considers not just what the user asked , but also contextual matches from a knowledge base , and falls back to GPT-4 to resolve ambiguity.

Let’s dive in — and of course, run the whole thing live on Google Colab.

Step-by-Step Implementation

This is an excerpt — the full article continues on Medium.