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How should a developer structure a prompt to prevent an AI model from making specific mistakes?

A developer must place absolute constraints at the end of a prompt. These rules tell an AI model what it must never do. This placement helps the AI model remember and follow these critical instructions.

By Pawan Nayar · from the LLOS AI Learning record

The rule

A developer must place absolute constraints at the end of a prompt.

These rules tell an AI model what it must never do. This placement helps the AI model remember and follow these critical instructions.

A developer should put absolute constraints at the very end of a prompt. These constraints are golden rules. They tell the AI model what it must never output or reference. The developer should explicitly state, 'never output/quote/reference these.' This framing makes the instruction clear. The developer can also instruct the AI model to suppress its own voice. This means the AI model should not say things like 'as an AI model.' If a template uses `{{golden_rules}}`, it should resolve to an empty string. This ensures no unwanted rules are accidentally included.

A developer creates a prompt for an AI model that generates marketing copy. The developer adds a section at the end: 'ABSOLUTE CONSTRAINTS: Never mention competitor names. Never use exclamation points. Never promise specific financial gains.' The AI model then generates copy that avoids these forbidden elements. If the developer put these rules in the middle, the AI model might forget them.

Words you'll need

Resolved from this lesson's own record — real definitions, not invented for this page.

Prompt Design

Writing instructions that get the AI to do what you want

Model Alignment

Ensuring AI behaves as intended and aligns with goals

Robustness

How well AI performs under different conditions

Failure Modes

Ways an AI system can give you wrong answers

Questions people ask

More from the same record, pulled by shared topic — not written new for this page.

How can an AI model be prevented from revealing its internal rules or instructions?

A developer must separate the AI model's core rules from its output template. The developer should place all strict rules at the end of the template.

How can an AI model accurately follow user instructions?

An AI model needs clear and complete instructions. The user must state the desired outcome precisely.

Why did the AI model include its instructions in the answer?

The AI model saw special formatting in the instructions. This formatting made the instructions look like important text.

Where should a developer put rules about not sharing private information in an AI prompt?

A developer must not put private rules in the main text of an AI prompt. These rules are called proprietary constraints.