By ChatGPT ads use a 40-character headline, a 150-character description, and a destination URL. No images. No video. Also not carousel. Your copy does all the heavy lifting, and with character limits this tight, every word matters.
Most advertisers are treating ChatGPT ad creative like shortened Google Ads copy. That’s a mistake. ChatGPT ads appear inside a conversation, not on a search results page. The context is different, the user mindset is different, and the creative that works is different too.
This guide covers the exact specs, shows real examples of what works and what doesn’t, and gives you a framework for writing ChatGPT ads that actually convert.
Key Takeaways
- ChatGPT ad format: 40-character headline + 150-character description + URL (text only, no images)
- Write for conversation context, not search results; your ad appears mid-chat
- Outcome-focused headlines (“Get paid faster”) outperform category labels (“Invoicing Software”) by 3-5x on CTR
- Test at least 5-10 headline variations from day one; small wording changes have outsized impact
- Landing pages should match the conversational tone; dense corporate pages kill conversion rates
ChatGPT ad specs: The complete reference
Here are the exact specifications for ChatGPT ad creative as of May 2026:
| Element | Specification |
|---|---|
| Headline | 40 characters maximum |
| Description | 150 characters maximum |
| Destination URL | Any valid URL |
| Format | Text only |
| Label | “Sponsored” (automatically added by OpenAI) |
| Images | Not supported |
| Video | Not supported |
| Call-to-action button | Not supported (link in description) |
The ad appears below ChatGPT’s organic response, clearly labeled “Sponsored.” In some product-related conversations, a shopping card format may appear with brand logo, price, and availability instead of the standard text format.
For full platform details, see OpenAI’s advertising documentation.
ChatGPT ad examples: What works vs. what doesn’t
Headline examples
What works (outcome-focused):
| Headline | Chars | Why It Works |
|---|---|---|
| Send invoices. Get paid faster. | 31 | Specific outcome, active verbs |
| Vet-formulated meals for your dog | 34 | Benefit from buyer’s perspective |
| Design social posts in 2 minutes | 33 | Time-specific benefit |
| Project mgmt for creative teams | 32 | Audience-specific positioning |
| Track expenses without spreadsheets | 36 | Pain point elimination |
What doesn’t work (category labels):
| Headline | Chars | Why It Fails |
|---|---|---|
| Best Invoicing Software | 23 | Generic category, no benefit |
| Premium Dog Food Delivered | 26 | Features, not outcomes |
| Social Media Design Tool | 24 | Describes product, not value |
| Project Management Platform | 28 | Could be any competitor |
| Expense Tracking Solution | 25 | Corporate-speak, vague |
The pattern is clear: headlines that describe what the user achieves get clicks. Headlines that describe what the product is get scrolled past.
Description examples
Strong description (150 chars):
“Create professional invoices in 30 seconds. Auto-reminders chase payments for you. Join 50,000+ freelancers who get paid on time. Start free today.” (148 chars)
Why it works: Specific time saving, automation benefit, social proof (50,000+), low-friction CTA.
Weak description:
“Our invoicing platform offers comprehensive billing features including customizable templates, automated reminders, and detailed financial reporting.” (150 chars)
Why it fails: Feature list with no outcomes. “Comprehensive” and “customizable” are filler words. No social proof. No CTA.
The conversation test
Before finalizing any ChatGPT ad, read it out loud as if someone just asked a question and your ad is the response. Does it sound like a helpful recommendation, or does it sound like a banner ad?
Elena, head of growth at a fitness app startup, wrote her first ChatGPT ad headline: “AI-Powered Fitness App” (22 chars). CTR: 0.2%. She rewrote it as: “Get a personal trainer for $9/month” (35 chars). CTR jumped to 1.8%. The second version answered the question someone was probably asking: “How can I get fit without paying for a trainer?”
Want to generate dozens of ChatGPT ad variations instantly? Simplified’s AI Ads Generator creates ad copy within ChatGPT’s character limits, so you can test multiple angles without spending hours writing.
How to write ChatGPT ads that convert
1. Start with the conversation, not the product
Ask yourself: what question is someone asking ChatGPT when my ad should appear? Write your headline as a response to that question.
If someone asks “What’s the best way to manage social media for a small business?”, your headline should feel like part of the answer: “Schedule a month of posts in 30 min” (36 chars).
2. Use specific numbers
Numbers cut through noise. “Save 5 hours/week” is concrete. “Save time” is not. “Join 10,000+ teams” is credible. “Trusted by many” is forgettable.
In 40 characters, every word that isn’t pulling its weight needs to go. Numbers earn their space.
3. Lead with outcomes, not features
Nobody in a ChatGPT conversation is looking for “AI-powered automation with 500+ integrations.” They’re looking for “Stop copying data between apps” (30 chars).
Translate every feature into what it means for the person reading.
4. Match the description to the headline promise
Your 150-character description should expand on the headline’s promise with proof and a CTA. A formula that works:
[Expand the benefit] + [Proof point] + [CTA]
Example:
- Headline: “Track expenses without spreadsheets” (36 chars)
- Description: “Snap a photo of any receipt and it’s categorized automatically. 200,000+ small businesses use Expenzo. Try free for 14 days.” (124 chars)
5. Write 10 variations, then test
Kevin manages paid media for a travel booking startup. For his first ChatGPT campaign, he wrote one headline and one description. After a week, CTR was 0.6% and he had no idea if it was good or terrible. For his second campaign, he generated 15 headline variations using an AI writing tool, launched all of them, and within five days identified that “Book flights 40% cheaper than airlines” massively outperformed “Best Flight Deals Online.” The winning headline had 3.2x higher CTR.
Volume testing isn’t optional on this platform. With 40-character headlines, the difference between average and excellent is often just two or three words.
Landing page best practices for ChatGPT ads
Your landing page matters as much as your ad creative. ChatGPT traffic arrives with high intent but expects a different experience than Google or Meta traffic.
Match the conversational tone. People clicking from a ChatGPT ad were just having a conversation. A landing page that feels like a conversation (clean, direct, benefit-focused) converts better than one that feels like a brochure.
Answer the question immediately. Your visitor was researching something specific. Put the answer above the fold. Don’t make them scroll through a hero section, social proof bar, and three feature sections before seeing what you actually offer.
Keep it simple. One CTA. One value proposition. One action you want them to take. ChatGPT users are in research mode; give them a clear path from “interesting” to “let me try this.”
Avoid stock photography walls. Dense pages with generic stock photos feel disconnected from the conversational experience they just left. Use product screenshots, short videos, or clean text-based layouts instead.
FAQ
What size are ChatGPT ads?
ChatGPT ads are text-only with a 40-character headline and a 150-character description. There are no image or video components. The “Sponsored” label is added automatically by OpenAI.
Can I use images in ChatGPT ads?
No. ChatGPT ads are currently text-only. Some product-related queries may trigger a shopping card format with a brand logo, but standard ad units are text headlines and descriptions only.
How many ad variations should I test?
Start with at least 5-10 headline variations. With only 40 characters, small wording changes (outcome vs. feature, specific number vs. vague claim) can produce 3-5x differences in CTR.
What makes a good ChatGPT ad headline?
The best ChatGPT ad headlines describe an outcome the reader wants, not a product category. “Get paid faster” beats “Invoicing Software.” Use specific numbers, active verbs, and language that sounds like a helpful recommendation rather than a banner ad.
Start creating ChatGPT ads that convert
ChatGPT ad creative rewards specificity, brevity, and relevance. Write for the conversation your ad appears in. Lead with outcomes. Test aggressively. And build landing pages that continue the conversational experience.
The format is simple. The craft is not. But with 40 characters and the right angle, you can reach high-intent users at the exact moment they’re researching what you sell.
For the full platform overview including pricing, targeting, and setup, see our complete ChatGPT ads guide.
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