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'GPT-5 Revealed: Secret System Prompt Exposes Underlying Mechanisms of ChatGPT'

Unveiled tardily: The alleged guide for GPT-5, ChatGPT's successor, has been exposed, offering an intimate peek into its hidden operations.

'GPT-5's inner workings exposed by system prompt leak: reveals you as the AI model
'GPT-5's inner workings exposed by system prompt leak: reveals you as the AI model

'GPT-5 Revealed: Secret System Prompt Exposes Underlying Mechanisms of ChatGPT'

In the realm of artificial intelligence, a leaked document claiming to be the system prompt for OpenAI's latest large language model, GPT-5, has been circulating on Reddit and GitHub. However, it's important to note that this leak has not been officially confirmed by OpenAI, leading to questions about its authenticity.

The leaked prompt, if genuine, offers a unique perspective into the inner workings of GPT-5. It starts with an identity statement ("You are ChatGPT, a large language model based on GPT-5 trained by OpenAI"), indicating the model's identity and the organisation responsible for its training.

The prompt also includes specific instructions, such as a knowledge cutoff date (June 2024) and the banning of certain phrases like "Would you like me to; want me to do that; do you want me to; if you want, I can; let me know if you would like me to; should I; shall I." These restrictions aim to improve user experience by reducing redundant or overly tentative responses.

The leaked prompt also reveals an evolution in the model's personality parameters, with a listed personality version as "v2," suggesting iterative tuning of the model's behavior. Furthermore, it contains lengthy guidelines about generating images, including images of yourself, suggesting a more holistic approach to the model's capabilities.

If authentic, this leak provides valuable insights into how OpenAI governs GPT-5's persona, restricts certain conversational phrases, and enforces style guidelines. It suggests that GPT-5's behavior is strongly shaped by explicit system-level instructions rather than solely by training data or model architecture.

However, the authenticity of the leaked system prompt is unproven. Some users and experts have expressed skepticism, suggesting it could be a deliberate decoy or canary prompt. OpenAI has not published or confirmed any system prompt for GPT-5; their official materials describe a routed system, not one static script.

In summary, while the leak, if real, provides a rare glimpse into OpenAI’s direct system instructions, its authenticity remains unconfirmed. The revealed details align with current understanding of how OpenAI shapes ChatGPT-5’s responses and behavior, but further verification is needed.

Additional context about GPT-5 includes its architecture as a unified system that dynamically routes requests between fast and deep-reasoning modes internally without user model selection, aiming for more adaptive and efficient responses. Users report that good prompting still significantly impacts GPT-5’s output quality, reflecting the model’s sensitivity to input instructions.

The leaked document, if confirmed authentic, sheds light on the integration of artificial intelligence and technology, specifically in the case of GPT-5, showcasing how explicit system-level instructions shape its responses and behavior. However, the document's credibility is yet to be officially verified by OpenAI, causing speculation about its authenticity and raising questions about the origins of the leaked information.

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