Creating content, doing onder search, resolving technical issues , writing emails - it all takes time. And often more than you have.
Thanks to the huge leap AI has made in recent years, this is no longer necessary. Smart tools like ChatGPT take the heavy lifting off your hands.
With custom GPTs of go one step further: your own customised ChatGPT, tailored to one specific task. So you write blogs, do onder search or compose emails in a fraction of the time - completely in your style!
REGISTER FOR THE FREE AI SEO WEBINAR ON 20 NOVEMBER (10.00-11.00)!
Save time and effort A custom GPT, or tailor-made GPT, is tailored to your specific goals. It builds on OpenAI's powerful language models, which are capable of generating text that is barely onder separable from real human communication.
Further training these models with data relevant to your situation creates a GPT that fits your context perfectly. Think, for instance, of a model that writes convincing marketing texts that precisely appeal to your target audience, generates high-quality product images or analyses complex data sets and translates them into clear KPIs.
The advantages of a custom GPT
A custom GPT saves you time and ensures consistent communication. You reduce repetition and keep your tone of voice the same everywhere.
These are the main features of a custom GPT:
⚙️ More efficient content production
Consistent content at scale: generate bulk SEO-optimised texts, such as blogs or product descriptions.
Optimised copywriting: Have your GPT written with attention to CTAs, conversion and a logical structure (H1/H2/H3).
Rapid content optimisation: Rewrite existing texts directly according to the latest SEO and Google guidelines.
🌐 Strategic content structure
Clustering: Build complete content clusters around a main keyword, including FAQs and internal link structures.
Rich snippets & structured data: directly generate AI-SEO snippets in JSON-LD, such as FAQs, products or reviews.
Internal linking strategies: Get smart suggestions for internal links based on onderwerp and keyword clustering.
🔍 SEO automation and optimisation
Keyword targeting: Train your GPT to automatically incorporate relevant (long-tail) keywords into texts naturally.
Technical SEO-onder Support: generate or check meta titles, descriptions, alt-texts, structured data and robots.txt.
Local SEO: automatically create location-based landing pages with unique texts per city or region.
📊 Analysis & multilingualism
Competitive analysis: lets the GPT quickly scan and summarise competitors' structure and content.
Multilingual SEO: use one GPT for multiple languages - perfect for translating and localising content, e.g. from English to Flemish or German.
Customised workflows: build own prompts, such as: "Analyse this page, provide areas for improvement and rewrite the metadata."
Benefits summarised:
Advantage
Impact
Scalable content
Extremely time-saving
Keyword & content strategy
Data-driven & fast
Localisation & multilingualism
Growth in new markets and local SEO
Automation & consistency
Fewer errors, more output
Technical SEO tasks
Technical onder support
Working with Onder
Boring, repetitive work? Get a custom GPT to do it.
We work with you to build a smart AI assistant that writes, thinks and optimises as you would, but faster. From SEO blogs to persuasive emails and multilingual content: your GPT speaks your brand language and works at your pace. And the best part? You keep time for the creative work that really matters.
Wondering what we can do for you? Together we will drive more traffic to your website!
A ContentGPT specialises in writing and improving content such as blogs, product texts, social media posts and campaigns. The model aligns with your brand language and SEO goals. This gives you instantly usable texts that are consistent and SEO proof.
A Custom GPT is built manually using a particular process. You set up the model for processes such as technical SEO, data analysis, competitiveonder search or internal workflows. Thanks to adapted prompts, clear instructions, knowledge (documents), additional data and clear instructions, it fits seamlessly with your organisation's goals.
Aspect
Content GPT
Custom GPT
Target
Pure focus on content creation and SEO
Broader use: content, technical SEO, analytics, customer service, etc.
Focus area
Blogs, product texts, social posts, campaigns
Also technical processes such as meta tags, structured data, internal link structure, clustering and KPI analysis
Configuration
Aligned with tone of voice, company guidelines and SEO goals
Fully flexible: workflows, prompts, data integration and customisation rules
Output
SEO-proof, readable and consistent texts in brand style
Depending on the application: content, code, reporting, analysis or automation
Advantages
Time savings, consistent branding, optimisation for search engines
Extremely scalable, deployable across multiple business processes, data-driven and multilingual
Authenticity
Controlling AI signals, rewriting for natural appearance
What exactly is a custom GPT? A custom GPT is your personalised version of ChatGPT fully tailored to your brand, goals and workflows. You can think of it as an AI assistant trained to write, think and react the way you want. Whether it's blogs, customer service, emails or SEO content: your GPT knows what's important to your business.
How do I create my own ChatGPT? Through the platform of OpenAI you can program zonder to build your own GPT. You add instructions (e.g. your tone of voice), define what the GPT needs to know, and choose how it should respond. Within minutes, you have an AI that does exactly what you need it to do.
How does that work technically? A custom GPT runs on the standard GPT model, but with extra layers of instructions and knowledge. You tell the model how it should behave and what context understand it, possibly with its own documents or data. The result? Answers that really fit your approach, target audience and style.
What does it get me? Time. A lot of time. A well-set custom GPT can save hours of repetitive work per week, think blogs, product texts, emails or SEO optimisations. Plus, you get consistent content in your tone of voice, zonder that you have to brief over and over again.
Who is this interesting for? For anyone who regularly writes texts or processes data. From marketers and content teams to agencies, consultants and e-commerce companies, a custom GPT helps where repetition or scale is important.
Can a custom GPT also work in multiple languages? Sure. You can train a GPT to write or translate in different languages while maintaining style and nuance. Ideal if you work internationally or want local versions of your content.
What about privacy and data? Your data remains your property. The content you add to train your GPT is only used within your own environment and not shared with other users.
What can you do for me? We help you build, train and optimise your custom GPT. We tailor the model to your brand, workflows and goals so you work faster, zonder lose quality. In short: less manual work, more results.
Subscribe to our newsletter and don't miss a single SEO tip
"*" geeft vereiste velden aan
Read our testimonials!
Renzo van Dongen
Digital content manager Peugeot
Whether it's about content or technical adjustments, it doesn't matter. Martijn briefs this in a very clear way so that it can be implemented locally or by our head office in France. [...] Since the start of our collaboration, we have achieved great results. Keep it up!
Marien van Stegeren
Eigenaar Kitcentrum
When your online onderneming grows, expectations often grow too, in every area.
To a large extent, we were in control of SEO and its interpretation ourselves. We found out that our own "general view" was no longer sufficient, so we engaged Bureau Onder. Surprising and clear. We have built up a fine collaboration, partly because Martijn also regularly visits our office with Eline or Mariska (depending on the case), which is very valuable to us!
Marten Stellingwerf
Webmaster
Martijn and Mariska make the SEO story understandable for the layman and are happy to think along with us. It is nice that there is a personal contact moment every month with an extensive report and the opportunity to discuss everything.After just a few months, Onder has already managed to achieve number 1 positions on Google with some of our webshop pages. We are very satisfied with Onder.
Mark Prummel
SEO Specialist Stella Fietsen
For several years, Onder has been a valued partner of Stella. Martijn is my sparring partner for complex SEO issues and the extra pair of critical eyes that keeps us on our toes. Together, we have achieved nice growth in online visibility, visitor numbers and leads. Onder onder stands out for its short lines of communication and professionalism. They speak our language: don't nag, get down to business. That is what we love!
Dutch
English