Originally posted on LinkedIn
Yeah, everyone’s already posted that GPT-5 dropped… but here I’ve got the leaked System Prompt 👇🏼
The System Prompt is the set of instructions OpenAI gives the model upfront to guide its behavior.
That’s how they make it respond nicely, stay within legal limits, maintain consistent style, etc.
The most interesting things I found:
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If you want the model to remember something long-term, be explicit about asking for it. “I want you to remember this and this and this about me for later.” It’s actually forbidden from remembering certain things unless you explicitly ask it to.
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They tell the model exact libraries to use for code tasks (Framer Motion for animations, Tailwind for CSS, for example). I think this kind of kills competition between libraries.
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They only give specific instructions for Python and React (not even plain JS?). I get that those are the only ones it can evaluate internally, but come on — at least a style guide for the top 10 languages?
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That they have to repeat things so many times 😵💫 The poor thing was told 5 times not to write JSONs for memory, and a couple of those were in bold.
