ChatGPT Prompts for Social Media: Posts, Captions and a Content Calendar

What AI can (and can't) do for your social media

AI is a good writing partner for the parts of social media that eat time: coming up with ideas, turning one idea into several formats, drafting captions and organizing a month of posts into a calendar you can actually keep up with.

It doesn't know your customers, your numbers or what worked for you last month unless you tell it. It can't promise reach or followers, and it will happily write confident claims about your product that aren't true. Treat everything it writes as a draft.

What to tell ChatGPT before asking for anything

Generic prompts get generic posts. Start your conversation with a short brief like this, and reuse it every time:

• What you do and what you sell, in one or two sentences.
• Who your ideal customer is and what worries or motivates them.
• Which platforms you post on, and only the ones you can keep up with.
• How many posts a week you can realistically publish, and which formats you can produce (text, photos, short videos, carousels).
• Your brand's tone of voice, with an example of a post you liked.
• What makes you different, using only facts you can stand behind.
• Topics or approaches you want to avoid.

Before we write anything, here's my brief. Remember it for this conversation.
Business: [what you do and sell].
Ideal customer: [who they are and what they care about].
Platforms: [e.g. Instagram and LinkedIn].
Capacity: [number] posts a week; formats I can make: [list].
Tone: [e.g. warm, direct, a bit playful]. Example of a post I like: [paste it].
What makes us different: [facts only].
Avoid: [topics, words or approaches].
Reply only with a 3-line summary of how you'll write for this brand, and wait for my first request.

Prompt for a social media content calendar

A calendar works when it matches the time you really have. Ask for content pillars first, then one specific idea per post, not vague themes like 'motivational Monday'.

Using my brief, plan 4 weeks of social media content.
Goal for this month: [e.g. get enquiries for our new class / launch a product on the 20th].
Key dates: [launches, events, holidays relevant to my customers].
1. Propose 3–4 content pillars that fit my business and goal.
2. Build a week-by-week table with: day, platform, format, pillar, one concrete post idea and a first-line hook.
3. Don't plan more than [number] posts a week in total.
4. Show how to reuse at least two ideas across formats or platforms.
Don't promise results or invent statistics, testimonials or numbers about my business.

Prompts for posts and Instagram captions

For individual posts, give the AI the idea, the platform and what you want the reader to do next. Ask for a few versions so you can pick and edit instead of starting from a blank page.

Write 3 versions of an Instagram caption for this post: [describe the photo or video and the idea behind it].
Audience: [who it's for]. Tone: [your brand tone].
Each version should open with a hook in the first line, keep the body under [number] words, and end with one clear call to action: [e.g. save the post / comment with a question / visit the link in bio].
Suggest up to [number] relevant hashtags separately, and don't use claims I haven't given you.

Write the text for a [number]-slide Instagram or LinkedIn carousel on [topic] for [audience].
Slide 1: a hook that makes the problem clear. Middle slides: one idea per slide, max [number] words each. Last slide: a short recap and a call to action.
Then write the caption that goes with it. Text only: I'll do the design myself.

Prompts for content ideas and repurposing

When you run out of ideas, ask the AI to work from what your customers already ask you. And before writing something new, check what you can reuse: a blog post, a talk or an FAQ can become several posts.

Give me [number] post ideas for [platform] for [business], aimed at [audience].
Base them on these real questions and objections from customers: [list them].
For each idea: a one-line angle, the best format (text, photo, short video, carousel) and a first-line hook. Mix educational, behind-the-scenes and promotional posts, with no more than one in five being a direct sales pitch.

Here's a piece of content I already have: [paste a blog post, newsletter, talk notes or FAQ].
Turn it into: 1 LinkedIn post, 3 Instagram caption drafts, 1 short-video script outline of under [number] seconds and 2 short posts for [X / Threads].
Keep the facts exactly as they are in the original and adapt the tone to each platform.

Mistakes and limits to keep in mind

• Publishing without reading: check every fact, price, date and promise. If the AI wrote it, you're still the one saying it.
• Invented proof: never let AI make up testimonials, reviews, customer numbers or results.
• Expecting growth on demand: no prompt guarantees reach, followers or sales. Post, look at your own data and adjust.
• Ignoring the rules: paid partnerships and ads must be disclosed according to each platform's rules and the advertising regulations where you operate, and contests or giveaways have their own platform rules.
• Sounding like everyone else: edit drafts into your own voice and add details only you know, like real stories, real customers' questions (with permission) and your own opinions.

Templates for your social media

PromptYa's 4-week content calendar template asks about your business, audience, goal, channels, posting capacity, formats and tone in a short form, and generates a prompt that returns pillars, a calendar with one idea per post, hooks and a repurposing plan.

If you also run ads, the ad copy template generates headline, description and call-to-action variants for testing; the blog idea bank helps you plan longer content you can later turn into posts. You can copy each prompt or open it directly in ChatGPT, Claude or Gemini.