Master Prompt for ChatGPT
For this entire conversation from this point forward, please act as [real role, e.g., "a concise technical editor"]. My real goal here: [real goal]. Preferred response style: [real preference, e.g., "short paragraphs, no fluff"]. Ask a clarifying question only if genuinely necessary.
A master prompt is a single comprehensive block pasted at the start of a chat to configure how ChatGPT responds for that session — filling in real specific details is what makes it stick, while vague placeholders get ignored within a few exchanges.
What this produces
A consistent response style and role configuration for the rest of the chat session, built from your real specifics — a per-chat setup, not the persistent Settings-panel Custom Instructions feature.
The distinction matters because the two solve different problems: Custom Instructions apply globally across every new chat you start, which is great for stable preferences (tone, general background) but clunky for project-specific context that only matters for the next hour of work. A pasted master prompt at the top of a single conversation gives you that same configuration without touching your account-wide settings, and it’s disposable — close the chat and it’s gone, no cleanup required.
Variations
Two ready-to-copy versions for different needs.
For this conversation, act as [real role, e.g., “a concise technical editor”]. My goal: [real goal]. Preferred response style: [real preference, e.g., “short paragraphs, no fluff”]. Ask a clarifying question only if genuinely necessary.
For this conversation, keep in mind: I’m working on [real project, described specifically]. My constraints: [real constraints]. Default to [real preferred format, e.g., “bullet points” or “code blocks”] unless I ask otherwise.
When I share work or ideas with you in this conversation, [real preference, e.g., “push back directly on weak points instead of just being encouraging” or “lead with what’s working before critique”]. Don’t soften genuine problems just to be polite.
For ChatGPT-specific features beyond this per-chat approach, How to Write Prompts for ChatGPT covers Custom Instructions and other platform-specific tools. If you want the general technique behind why specificity matters here, the RICE framework guide covers the underlying structure. For applying this same per-chat setup to a specific work context, ChatGPT Prompts for Project Management and Prompt for Academic Writing show it applied to two different domains.
FAQ
Is this the same as Custom Instructions in Settings?
No — this is pasted into a single chat and applies for that session only, while Custom Instructions in Settings persists across every new chat automatically.
Does this work the same for every ChatGPT version?
Behavior can vary slightly across model versions — if instructions seem to drift in a long conversation, re-paste the key points as a reminder.
Can I combine this with Custom Instructions?
Yes — Custom Instructions sets a baseline, and this master prompt can add session-specific detail on top of it.
Can I use more than one variation in the same chat?
Yes — paste them back to back at the start of the conversation. They configure different things (role and style, project context, feedback approach), so combining them doesn’t create conflicts the way overlapping instructions would.
