This is a reference sheet, not a lecture. Bookmark it, and when a ChatGPT answer misses, scan the tables for the one modifier that will fix it. Every phrase below is copy-paste ready, and the starter prompts at the bottom combine them.
The rule underneath all of it: be specific about the output you want. On GPT-5.6 (July 2026), vague prompts still get vague answers. Give it a role, a job, the context, and a format, and it will use web browsing, Python, and your saved memory to deliver.
The universal prompt formula
Every good prompt is some mix of five parts: Role + Task + Context + Format + Constraints. You don't always need all five, but naming each one removes guesswork from the answer.
| Part | What it sets | Example |
|---|---|---|
| Role | Expertise and vocabulary | "You are a senior product marketer." |
| Task | The one job to do | "Write a launch announcement." |
| Context | The facts it needs | "Product: a budgeting app for freelancers." |
| Format | Structure of the output | "120 words, plus 3 subject-line options." |
| Constraints | Limits and rules | "No jargon. Friendly tone. US spelling." |
You are a senior product marketer. Write a launch announcement email.
Context: We're launching [PRODUCT], a [ONE-LINE DESCRIPTION] for [AUDIENCE]. The main benefit is [BENEFIT]. Launch date is [DATE].
Format: Under 130 words, one clear call to action, plus 3 subject-line options.
Constraints: Friendly but professional. No hype words. US spelling.For a fuller walkthrough of building prompts this way, see our guide on how to prompt ChatGPT for business writing.
Role modifiers
A role sets who ChatGPT "is," which changes its vocabulary, priorities, and level of detail. Put it in the first line.
| Modifier | What it does | Example snippet |
|---|---|---|
| Act as a… | Assigns a job function fast | "Act as a hiring manager reviewing my resume." |
| You are a senior… | Raises expertise and rigor | "You are a senior copy editor." |
| Play the role of… | Sets up a persona to interact with | "Play the role of a skeptical customer." |
| Respond as if you were… | Borrows a known voice or style | "Respond as if you were a plain-English explainer." |
| You specialize in… | Narrows to a niche domain | "You specialize in B2B SaaS onboarding." |
| Assume the perspective of… | Reframes for an audience or critic | "Assume the perspective of my CFO." |
| You are an expert with 15 years in… | Signals depth and confidence | "…15 years in email deliverability." |
Roles pair well with any task. Our roundup of the best ChatGPT prompts for work leans on them heavily.
Format modifiers
Naming the exact output structure is the highest-leverage change you can make. Add one of these to almost any prompt.
| Modifier | Effect | Example |
|---|---|---|
| As a table | Comparable rows and columns | "Compare these 3 tools as a table." |
| As a bullet list | Scannable, no prose | "Give me the key points as bullets." |
| Step by step / numbered | Ordered, actionable steps | "Explain the setup as numbered steps." |
| As JSON | Machine-readable output | "Return the result as valid JSON with keys name, price." |
| In exactly N words | Enforces length | "Summarize this in exactly 50 words." |
| In markdown with headings | Structured document | "Format as markdown with H2 headings." |
| One paragraph, no lists | Tight prose block | "Answer in one paragraph, no bullets." |
Tone & style modifiers
Tone words steer voice without you rewriting anything. Add one after the task, or set a default in custom instructions.
| Tone word | When to use it |
|---|---|
| Professional | Client, exec, or formal work communication |
| Friendly / warm | Teammates, customers, onboarding messages |
| Concise / punchy | Slack, subject lines, ads, headlines |
| Confident | Sales copy, pitches, proposals |
| Neutral / objective | Reports, documentation, comparisons |
| Empathetic | Apologies, bad news, support replies |
| Plain / simple | Explaining to a non-expert audience |
| Persuasive | Calls to action, marketing, fundraising |
For applying tone to inboxes specifically, see our ChatGPT prompts for writing work emails.
Reasoning & quality boosters
These phrases make ChatGPT slow down, check itself, or show its options. Use them when the answer matters and a first draft won't do.
| Booster | What it does | Add this line |
|---|---|---|
| Think step by step | Reduces skipped logic on hard tasks | "Think step by step before answering." |
| Ask me questions first | Fills gaps before it guesses | "Ask me any clarifying questions before you start." |
| Cite sources | Grounds claims, enables checking | "Browse the web and cite your sources with links." |
| Self-critique, then improve | Catches weak spots in a draft | "Write a draft, critique it, then give a better version." |
| Give 3 options | Surfaces range instead of one answer | "Give me 3 distinct options, each with a one-line tradeoff." |
| Show your assumptions | Exposes what it inferred | "List the assumptions you made at the end." |
Refinement / follow-up phrases
Once ChatGPT replies, you rarely need a new prompt. Drop one of these follow-ups and it edits its own last answer.
| Follow-up | What it changes |
|---|---|
| "Make it shorter" / "cut it by half" | Trims length, keeps the point |
| "Expand section 2" | Adds depth to one part only |
| "More formal" / "less formal" | Shifts tone up or down |
| "Simplify for a non-expert" | Removes jargon, adds plain terms |
| "Same, but friendlier" | Adjusts voice, keeps structure |
| "Give me 3 more like #2" | Iterates on a favorite option |
| "Now put it in a table" | Reformats the same content |
A note on GPT-5.6 specifics
GPT-5.6 chains tools in a single prompt, so you can say "browse for the latest figures, run the math in Python, and put the result in a table" and it will do all three. Save recurring preferences (your role, default tone, banned words) in custom instructions or a Project so they apply automatically and you don't repeat them. Memory carries context across chats, which is handy but worth reviewing so stale facts don't leak in. Claude Opus 4.8 and Gemini 3.x behave similarly here, but the modifier phrasing on this page transfers cleanly across all of them.
Copy-paste starter prompts
Each of these stacks a role, a format, a tone, and a reasoning booster. Fill the brackets and paste.
1. Draft any work email
You are a clear, concise business writer. Write an email to [RECIPIENT] about [TOPIC].
Context: [2-3 key facts]. My goal is [OUTCOME].
Format: Under 120 words, one call to action, professional but friendly tone. Give me 2 subject-line options.
Before you write, ask me anything you need to make it accurate.Best for: the daily inbox. See more in our fill-in-the-blank work email templates.
2. Summarize a long document
You are a sharp executive assistant. Summarize the text below.
Format: A 3-sentence overview, then 5 bullet points of the key decisions, then a "Next steps" list of action items with owners.
Constraints: Neutral tone. Flag anything unclear at the end.
Text:
[PASTE TEXT]Why it works: it fixes the structure so long inputs always come back scannable.
3. Compare options in a table
Act as a decision analyst. Compare [OPTION A], [OPTION B], and [OPTION C] for [USE CASE].
Format: A table with columns Option, Best for, Cost, Main tradeoff. Below the table, give a one-sentence recommendation and the assumption behind it.
Browse the web for current pricing and cite your sources.Best for: buying decisions and vendor picks.
4. Improve your own writing
You are a senior copy editor. Improve the draft below without changing its meaning.
Do this in 3 passes: (1) fix clarity and flow, (2) cut filler and jargon, (3) tighten to under [WORD COUNT] words.
Return the final version, then a short bullet list of what you changed and why.
Draft:
[PASTE DRAFT]Why it works: the self-critique pass catches weak spots a single rewrite misses.
5. Brainstorm with options
You are a creative strategist. I need ideas for [GOAL].
Give me 3 distinct directions. For each: a one-line concept, why it could work, and the biggest risk.
Keep it punchy. After the list, ask me one question that would help you go deeper on my favorite.Best for: escaping a blank page fast.
Frequently Asked Questions
What is the universal ChatGPT prompt formula?
Role + Task + Context + Format + Constraints. Tell ChatGPT who to be, what to do, the background it needs, how to structure the output, and any limits like word count or tone.
Do I still need role prompts like "act as a" in GPT-5.6?
Yes. Roles remain the fastest way to set expertise, vocabulary, and priorities. GPT-5.6 follows them reliably and combines them well with tool use and custom instructions.
What format modifiers work best?
Ask for a table, numbered steps, a bullet list, JSON, or a strict word limit. Naming the exact structure produces far more consistent output than leaving format open.
How do I make ChatGPT think more carefully?
Add reasoning boosters like "think step by step," "ask me clarifying questions first," "give three options," or "critique your draft, then improve it."
How do I refine an answer without rewriting my prompt?
Use quick follow-ups: "make it shorter," "expand section 2," "more formal," "simplify for a non-expert," or "same but in a friendlier tone."
Should I put modifiers in custom instructions or in the prompt?
Put durable preferences (tone, format defaults, who you are) in custom instructions or a project. Put task-specific modifiers in the prompt itself so they only apply when needed.
How long should a ChatGPT prompt be?
As long as it needs to be to include role, task, context, and format. A clear five-line prompt beats a vague one-liner. Cut filler, not detail.
Can I stack multiple modifiers in one prompt?
Yes. Most strong prompts combine a role, a format, a tone, and one reasoning booster. The starter prompts on this page show how to layer them cleanly.