Introduction
Just a couple of years ago, marketers experimenting with AI relied on ChatGPT plugins, add-ons that extended the model’s functionality in narrow ways. Fast forward to 2025, and the landscape looks completely different. Plugins have evolved into custom GPTs, purpose-built assistants that anyone can create and publish. Instead of juggling generic AI tools, marketers now have access to thousands of specialised GPTs designed to tackle very specific challenges, from SEO keyword research to creative design and campaign reporting.
For digital marketers, this shift is more than a technical update. It’s a fundamental change in how we plan, execute, and optimise campaigns. Whether you’re a solo entrepreneur or leading a team inside a larger agency, GPTs now serve as scalable teammates, ones that never sleep, don’t forget, and can be tailored to your brand’s unique needs.
In this post, we’ll walk through the evolution from plugins to GPTs, and then highlight nine of the most useful GPTs for marketers in 2025. These tools cover content creation, SEO, design, strategy, and more practical assistants that can help you save time, reduce costs, and sharpen your campaigns.
From Plugins to GPTs: What Changed
When OpenAI introduced plugins in 2023, they looked promising. Marketers could connect ChatGPT to third-party apps like Zapier, Expedia, or Canva. But there was a problem: plugins were fragmented, clunky to install, and required a bit of technical know-how.
The release of custom GPTs changed the game. Instead of bolting on external tools, marketers can now create or download specialised AI assistants directly from the GPT Store. Each GPT can be trained with custom instructions, knowledge files, and even integrated APIs, without writing a single line of code.
By early 2024, over 3 million GPTs had been published. Today in 2025, the store is full of marketing-specific assistants, each fine-tuned to handle a niche problem. From generating a month’s worth of LinkedIn posts to critiquing a landing page, there’s a GPT for almost everything.
For marketers, this means:
- Less time on manual tasks (keyword research, formatting reports).
- Faster creative output (images, slides, copy drafts).
- More personalised AI (brand-specific tone, market data, audience insights).
With that context in mind, let’s look at the nine GPTs every marketer should know in 2025.
9 GPTs for Marketers in 2025
To keep this practical, we’ve divided them into three categories: SEO & content marketing, visual design, and strategy & research.
1. SEO Keywords GPT
If you’ve ever spent hours juggling Ahrefs, SEMrush, or spreadsheets, this one’s for you. The SEO Keywords GPT acts like a lightweight keyword research assistant. Simply drop in a topic or seed keyword, and it generates:
- Keyword clusters with search intent.
- Long-tail suggestions.
- Competitive difficulty levels.
For content marketers and bloggers, this GPT is an everyday tool. Instead of exporting CSVs and parsing them manually, you can get a prioritised list of keywords in plain English.
Use case: Planning a content calendar for “AI marketing tools”? Ask SEO Keywords GPT, and it’ll hand you clusters like “AI tools for small businesses,” “best GPTs for content marketing,” and “AI assistants for SEO.”
2. Content Calendar Creator GPT
Publishing consistently is hard. The Content Calendar Creator GPT helps you map out your campaigns week by week.
You can ask it to:
- Suggest blog and social topics based on your niche.
- Plan posting frequency for each platform.
- Recommend seasonal or trending topics.
For agencies, this GPT doubles as a client-facing deliverable. You can generate a calendar in minutes, then polish it with brand-specific tweaks.
Pro tip: Pair this GPT with the SEO Keywords GPT, and you’ll have a keyword-driven calendar that aligns content with search demand.
3. Digital Marketing Insight Creator GPT
Data overwhelm is real. The Digital Marketing Insight Creator GPT connects with your ad dashboards or lets you paste in raw campaign data. It then:
- Builds simple, visual summaries.
- Highlights underperforming channels.
- Suggests next steps to improve ROI.
Instead of drowning in Google Analytics reports, you get narrative insights: “Your LinkedIn ads are converting 30% above average; consider reallocating budget from underperforming Facebook ads.”
For managers, this GPT is like a built-in analyst, fast, clear, and available 24/7.
4. Canva GPT
Visuals make or break campaigns. With Canva GPT, you can generate designs without opening a blank canvas.
Tell it, “I need three Instagram carousel templates for a SaaS launch,” and it will:
- Suggest layouts.
- Generate draft designs.
- Apply your brand’s colours and fonts if you upload guidelines.
This is particularly powerful for small teams that can’t afford full-time designers but still want polished graphics on demand.
5. DALL-E GPT
When you need something more custom than stock photos, DALL-E GPT fills the gap. It generates high-quality images for blogs, ads, and social posts.
For marketers, the benefit isn’t just creativity, it’s speed. Instead of searching for the “least bad” stock image, you can prompt DALL-E GPT for exactly what you need: “A professional flat-lay of a laptop, coffee mug, and marketing notes, in pastel tones.”
This GPT is especially useful for mood boards, ad testing, and campaign visuals.
6. Roast My Landing Page GPT
Every marketer knows the pain of wondering whether a landing page is “good enough.” The Roast My Landing Page GPT acts as a brutal but constructive critic.
You drop in your URL, and it analyses:
- Headline clarity.
- Call-to-action placement.
- Mobile responsiveness.
- Trust signals (testimonials, security badges, etc.).
The feedback isn’t fluffy—it points out where you’re losing conversions and suggests fixes. For performance marketers, this GPT pays for itself with just one conversion boost.
7. Marketing Strategy Advisor GPT
Small businesses and solo marketers often struggle to compete with bigger budgets. The Marketing Strategy Advisor GPT levels the playing field.
It can:
- Draft a full marketing funnel strategy.
- Suggest budget allocation across channels.
- Highlight low-cost tactics with high ROI.
For example, a local bakery might get a plan recommending: SEO for “birthday cakes near me,” weekly Instagram reels, and a referral program practical and tailored.
8. Competitor Analysis & Market Research GPT
Researching competitors used to mean hours of scanning websites, social feeds, and ads. The Competitor Analysis GPT automates that legwork.
Feed it a competitor’s URL or niche, and it will:
- Summarise their positioning.
- Highlight ad copy themes.
- Spot content gaps you can target.
For startups, this GPT is invaluable. It helps you quickly identify what big players are doing and, more importantly, where they’re not.
9. Supertools GPT Finder
Finally, with thousands of GPTs in the store, it’s easy to feel overwhelmed. The Supertools GPT Finder acts like a search concierge.
Instead of manually browsing categories, you can ask: “Find me a GPT that helps with TikTok ad copy.” It’ll point you to the most relevant assistants instantly.
For marketers who like to experiment but don’t have hours to explore the GPT Store, this GPT is a serious time saver.
Other Noteworthy GPTs for Marketers
While the nine above are must-haves, several other GPTs deserve honourable mentions:
- Zapier GPT – Automates tasks across your favourite apps (Slack, HubSpot, Gmail).
- Link Reader GPT – Summarises articles or reports you don’t have time to read in full.
- Smart Slides GPT – Turns content into professional-looking slide decks.
- ShowMe GPT – Generates diagrams and workflows, useful for team training or client explanations.
These aren’t daily drivers for everyone, but when you need them, they’re incredibly effective.
