Lost in the middle is a ranking problem you own

Never assemble a flat pile of chunks

The mistake is dumping a flat list of retrieved chunks into the context window and hoping the model reads the important one. Position matters, so leaving position to chance is the bug. The fix is to never build that pile in the first place.

Build a context assembly layer

We structure retrieved chunks into typed slots before they reach the LLM. The model reads a structured brief, not a heap of text. Because you decide which fact sits in which slot, you control position deliberately.

The four slots

Position is now a decision, not an accident

Each slot has a job, and the brief reads the same way every time. You stop praying the model finds the key fact, because you placed it yourself.

Why this is worth building

This is not hard to build. It is just not glamorous, so teams skip it and then blame the model. A structured brief lifts answer quality with no model change, and you own the outcome instead of waiting on a vendor.

What changes for your users

For your users, the difference is answers that stop missing the obvious. The key fact is no longer buried at position seven of a flat list. It sits in the slot built to hold it, every single time.

For your team, debugging gets concrete. When an answer is wrong, you inspect which slot failed instead of rereading a vague prompt. You fix a ranking rule, not a feeling.

Common questions