How would you construct useful context for a model request?

Selects relevant, trustworthy, and budgeted context instead of treating the context window as storage.

1Say itAnswer out loud first

2CompareCompare with Core answer

3RefineRefine with Stronger and Advanced

TL;DR

I start from the task and include only the instructions, current user input, conversation state, and supporting facts needed to complete it. I prefer authoritative and recent data, keep the context within a deliberate token budget, and define what the model should do when evidence is missing. Context is a request-scoped view, not the system of record.

Full answer below

Practice focus

Judgment about relevance, freshness, provenance, token budgets, and the difference between application state and model context.

Answer first

Answer path

Core answer first, then checkpoints toward a stronger answer.

Start
Core answer
Start here. This is the direct spoken answer to practice first.
Overview
A larger context window does not make indiscriminate context assembly correct. The goal is sufficient evidence with clear provenance and bounded cost.
I start from the task and include only the instructions, current user input, conversation state, and supporting facts needed to complete it. I prefer authoritative and recent data, keep the context within a deliberate token budget, and define what the model should do when evidence is missing. Context is a request-scoped view, not the system of record.
Checkpoint
Stronger answer
Optional upgrade with examples, trade-offs, and sharper phrasing.
For an order-status response, I would provide the relevant order facts from the authorized backend rather than a long account history. I would remove duplicate or stale data, label timestamps and sources, and reserve enough output budget for the response. If the task needs search across many documents, that becomes a retrieval design problem rather than a reason to paste everything into the prompt.

Review signals

Use these to catch weak phrasing, shallow reasoning, and risky claims.

Common mistakesCandidateCommon mistakesMistakes that weaken the answer or signal shallow understanding.Open details

Details

Using the maximum context window on every request.
Confusing conversation history with authoritative application state.
Ignoring output-token headroom.
Including stale or inaccessible data because it may be relevant.

How would you construct useful context for a model request?

Practice focus

Answer path

Overview

Review signals

Follow-up prompts

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Tech stacks

Skill areas

Human editorial direction

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