Published on March 26, 2026

OpenAI Model Spec: How AI Behavior Is Governed

How OpenAI Governs AI Model Behavior

OpenAI has detailed its Model Spec – an internal framework that governs AI model behavior and strikes a balance between safety and user freedom.

Security 4 – 6 minutes min read
Event Source: OpenAI 4 – 6 minutes min read

When you interact with ChatGPT, the model doesn't just generate the first response it thinks of. Its behavior is guided by a set of principles and priorities – a kind of internal code of conduct that determines how it responds to requests. OpenAI calls this document the Model Spec and recently shared more details about how it's structured and why it's needed.

Model Spec: Principles and Values for AI Behavior

Not a List of Prohibitions, but a System of Values

Simply put, the Model Spec is a public document that outlines how the model should behave: what to prioritize, how to weigh the interests of different parties, and when to refuse a request versus when not to. It's not just a technical manual for engineers, but an attempt to explain to the public the principles on which OpenAI's AI operates.

Crucially, the document is public. OpenAI has intentionally made it available to everyone so that users, researchers, and companies integrating the model into their products understand the rules it lives by. This is a matter of accountability: if the rules are known, it's easier to discuss, critique, and improve them.

Prioritizing Interests: How OpenAI Handles Conflicts

Whose Interests Matter More – and How It Works in Practice

One of the key questions the Model Spec addresses is whose interests to prioritize when conflicts arise. The model has several levels of relationships: OpenAI as the developer, companies and developers who use the API to build their products, and the end-users who are simply typing in the chat.

All three parties may have different expectations. For example, a company integrating the model into a corporate tool might restrict topics for discussion. A user of that tool might then attempt to go beyond those limits. The model needs to resolve such situations somehow – and the Model Spec provides it with guidelines for doing so.

However, some principles are non-negotiable, regardless of configuration. The model must not cause harm to the user, even if instructed by an operator. If someone is in a crisis situation, the model is obligated to at least point them toward help – even if the topic is formally outside its «scope of responsibility» in a specific product.

AI Safety Beyond Prohibitions: Understanding Model Spec

Safety Is More Than Just «Forbidden»

In public perception, «AI safety» often boils down to a list of topics the model refuses to discuss. But the approach described in the Model Spec is more complex.

There are hard limits – things the model will never do under any circumstances. These are the so-called «red lines»: assisting in the creation of weapons of mass destruction, child exploitation material, and the like. There is no flexibility here.

But beyond these absolute boundaries, the model should operate not on the principle of «forbid everything suspicious», but on the principle of common sense. Refusing to help where real harm is unlikely is also a bad outcome. This makes the tool useless and frustrates people who had perfectly reasonable intentions.

In short, the goal isn't for the model to be maximally cautious, but maximally useful – within limits where it doesn't create any real risk.

OpenAI Model Spec Is a Living Document

Why It's Complicated – and Why the Document Is a Living One

The Model Spec is not a final document. OpenAI is clear that it will evolve as model capabilities develop, experience accumulates, and new use cases emerge.

And this is an honest stance, because the task is truly non-trivial. Formulating principles of behavior for a system used by hundreds of millions of people with vastly different requests and contexts is not the same as writing a corporate manual. There are no ready-made answers for every situation.

For example, the question of how much the model should respect user autonomy – that is, a person's right to obtain information or make a choice, even if it's potentially not in their best interest – is not a technical question, but an ethical one. And the document is full of such questions.

Why Understanding OpenAI's AI Principles Matters

Why the Average User Should Know This

If you're not a developer or a researcher, you might wonder: why should I even read this?

The answer is simple: because the Model Spec explains why the model sometimes refuses, sometimes asks for clarification, and sometimes responds in ways you didn't expect. This isn't a random glitch or a technical error – it's the result of deliberate decisions about how an AI should behave.

Understanding these principles helps you interact with the tool more effectively. And, more importantly, it allows you to consciously assess whether these principles align with your own views – or not.

Transparency on this matter is an important step in itself. Not all companies developing powerful AI systems publicly explain the rules their models operate by. OpenAI has made this document accessible – and that, at the very least, provides a basis for discussion.

Original Title: Inside our approach to the Model Spec
Publication Date: Mar 25, 2026
OpenAI openai.com A U.S.-based company developing general-purpose AI models for text, code, and images.
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