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Knowledge · Generative AI

What is generative AI? Explained for business, in plain language

Generative AI, or GenAI for short, is AI that creates something new: a text, a summary, an image, code or spoken language. It learned to do that from enormous amounts of examples. ChatGPT, Claude, Gemini and Copilot all run on it. Here you'll read how it works, what it can do for your business, where it goes wrong and how to move beyond one-off prompts.

  • By Olaf Lemmens
  • Updated 27 October 2026
  • 10-minute read
  1. InLots of examplesText, images, code and sound
  2. AIThe model learns patternsHow language and images fit together
  3. HumanYour instructionA question, an email, a document
  4. AIIt creates something newPiece by piece, whatever fits your question
  5. HumanA human checksWhere it matters

Creating, not just recognizing

What is generative AI, in short?

Generative AI is AI that creates new content: text, images, code, spoken language or a summary of something that already exists. It learns this from enormous amounts of examples. After that, it can make something on request that didn't exist before.

You probably know it from ChatGPT, Claude, Gemini or Microsoft Copilot. You type a question or instruction, and within seconds there's an email, a summary or a first draft of a quote. You'll also often hear the abbreviation GenAI. It means exactly the same thing.

For businesses, this is genuinely new. Software always followed rules that someone had written down, or recognized patterns in numbers. Now software can also read and write, in plain language. That brings work within reach that was always done by people: answering emails, reading documents, drafting reports.

Generative AI creates something new. That's what makes it useful, and it's also why you need to check it.

How is it different from traditional AI?

AI is the umbrella term for software that does tasks that normally take human thinking. Within it, there are roughly two flavours: AI that predicts and AI that creates.

Traditional AI: predicting and recognizing

Traditional AI, often called machine learning, learns patterns from examples and uses them to predict or classify. Think of a spam filter that learns from the emails you mark as spam. Or a system that estimates how much you'll sell next month. The answer is a number, a category or a yes or no.

A model like that is usually trained on one task, often with your own data. If you want something else, you train a new model.

Generative AI: creating

Generative AI is a recent branch of the same tree. It also learns patterns from examples, but uses them to make something new. Not a yes or no, but a whole email. Not a category, but a twenty-page report in five lines.

The big practical difference: you don't have to train it yourself. One model can handle a huge range of tasks, and you tell it in plain language what you want. That instruction is called a prompt.

And ordinary automation?

There's also automation without AI: fixed rules that someone has designed. When an order comes in, send a confirmation. That works well as long as everything is predictable. Generative AI helps exactly where things become unpredictable: free text, an email that's different every time, a PDF with a different layout. In practice they often work together. The table further down shows them side by side.

How does generative AI work?

Without formulas: generative AI has seen an enormous number of examples, and based on those it makes something that probably fits your question.

  1. 01Training. The model is shown enormous amounts of text, images or code. From that it learns patterns: how sentences flow, what a quote looks like, what a cat looks like.
  2. 02Your instruction. You give a question or instruction, possibly with a document or an example attached.
  3. 03Piece by piece. A language model keeps predicting what most likely comes next, word by word, until the answer is complete. An image model works differently under the bonnet, but the idea is the same: it makes something that fits the patterns it has learned.

The models that produce text are called language models, or LLMs (large language models). GPT, Claude, Gemini and Llama are examples. How a language model works, with tokens and a context window, is explained in what is an LLM?

Two things to remember:

  • It predicts, it doesn't know anything for certain. That's why a wrong answer sounds just as convincing as a right one.
  • It doesn't know your business. It knows a lot about the world, but nothing about your customers, prices or agreements. Whatever it needs to know, you give it. That's also the key to better results.

What can generative AI do for your business?

Mostly work with language. And in an office, almost everything is language: emails, quotes, reports, contracts, customer questions. A few examples from everyday office work:

  • Emails and quotes. A first draft in your tone, with the right details in it. You read, adjust and send.
  • Summaries. Of a meeting, a long report or a customer file. What's in it, what was agreed, who does what.
  • Customer questions. A reply prepared with the order information or the policy attached, so a colleague only has to check it.
  • Reading documents. Pulling data from invoices, orders, CVs or contracts and putting it into the right system, instead of retyping it.
  • Translation. Product texts, manuals or emails, in several languages at once.
  • Answers from your own knowledge. An assistant that answers questions from your handbooks and procedures, with the source included. That's called RAG.
  • Code and formulas. An Excel formula, a small script or a first version of an internal tool.

See the pattern? Generative AI helps in three places: where something comes in and someone retypes it, where someone searches for information across three systems, and where someone makes a document that's almost the same every time. How to find that work in your own organization is covered in which processes can you automate.

Want to know how many businesses already use it, and for what? The numbers and sources are in AI in the Netherlands in numbers.

From one-off prompts to digital colleagues: the four phases

Almost every organization starts the same way. Someone tries ChatGPT, a colleague follows, and after a few months more and more people use it. Each in their own way. That's a fine start, but it's phase 1 of 4.

In the organizations we help, now more than 160, we see four phases of AI adoption.

Phase 1: Prompting

People use ChatGPT or Copilot, each on their own. Rewriting an email, summarizing something, working out an idea. It saves individuals time, but the work itself doesn't change. And often nobody knows exactly which data ends up where.

Phase 2: Assistants

You build your own GPTs and skills that know your work: your tone, your products, your way of working. An assistant that writes quotes the way you do. Everyone works with it in the same way. But you still start the conversation, and you take the next step. More in build your own AI assistant.

Phase 3: Workflows

Automations that run by themselves. An order arrives by email, AI reads it, the order is ready in the ERP and a colleague approves it. Nobody has to think about it any more. This is where the work itself changes.

Phase 4: Agents

Digital colleagues that get a goal and take the steps in your systems themselves: reading a customer question, looking up the order, preparing a reply and a solution. Always with a human in the loop, who approves where it matters. Also read what is an AI agent?

Most organizations are in phase 1. The value is in phases 3 and 4, because only there does AI really take over work in your processes. More on that in the 4 phases of AI adoption.

What are the limits and risks?

Generative AI is powerful, but not flawless. Sort out these five things before you roll it out widely.

  • It can make things up. A source that doesn't exist, a number that comes from nowhere. That's called a hallucination. You limit it by having AI work with your own documents with the source included, and by checking what matters. More in AI hallucinations.
  • Data and privacy. Business versions from the large providers don't train on your data by default and work with a data processing agreement. Free consumer versions don't offer that certainty. And personal data always falls under the GDPR. Read using ChatGPT safely under the GDPR and using AI safely.
  • The EU AI Act. For most office applications it's mainly about care and transparency. The law does ask you to work on AI literacy: your people know enough to use AI responsibly. See the EU AI Act for SMEs and AI literacy.
  • A human stays responsible. AI prepares, a human decides. How to arrange that without creating extra work is in human in the loop.
  • Shadow AI. If the organization doesn't arrange anything, employees arrange it themselves, with a private account or a free tool. A good business alternative and a few clear agreements work better than a ban.

How do you get started with generative AI?

Start with the work, not the tool. A question we hear a lot: which AI tool should we choose? The honest answer is that you only know once you know which work you want to change.

  1. 01Choose the work, not the tool. Where is information retyped, searched for or the same document made over and over? That's the first principle of our APO method: process first, technology later.
  2. 02Know where you stand. With the free AI self-assessment you see in two minutes where you are and what the next step is.
  3. 03Teach your team to prompt well. A good prompt is a good work instruction. Start with the guide to prompting, or bring your team to the same level in one half day with an AI training on your own work.
  4. 04Make agreements. Which tools are allowed, which data can go in and where a human checks. It doesn't have to be a thick document.
  5. 05Work out the numbers for one process. How long does it take now, with how many people and how often per month? Then you know what AI could deliver there.

Rather not do that last step yourself? In the AI Quick Scan we spend one day with you on site. Within a week you have a baseline, a business case per opportunity, a roadmap and honest package advice. The Quick Scan costs € 6,000, excluding VAT.

After that, we build phases 3 and 4 together in the AI Partnership. We only start when the business case pays back at least twice in the first year.

Where are you?

The four phases of AI adoption

Most organizations are in phase 1. The value is in phases 3 and 4. For each phase, what it involves and what the next step is.

  1. 01

    Prompting

    Phase 1 · each on their own

    ChatGPT and Copilot, everyone in their own way. Next step: training on your own work and a few clear agreements.

  2. 02

    Assistants

    Phase 2 · knows your work

    Your own GPTs and skills with your tone, knowledge and way of working. Next step: find the work that comes back every week.

  3. 03

    Workflows

    Phase 3 · runs by itself

    Automations that do the groundwork, with a human who approves. Next step: work out per process what it delivers.

  4. 04

    Agents

    Phase 4 · digital colleague

    Agents that take steps in your systems themselves, with a human in the loop. This is where the work itself changes.

Side by side

Rules, traditional AI or generative AI?

Three ways to hand work over to software. They don't exclude each other.

Rules (automation)Traditional AIGenerative AI
What it doesRuns fixed stepsPredicts or classifiesCreates something new
How it worksSomeone writes the rulesLearns patterns from examples, per taskLearns from enormous amounts of data and follows your instruction in plain language
Good atPredictable work without exceptionsOne well-defined prediction, such as demand or fraudReading, writing, summarizing and translating
Less good atFree text and exceptionsTasks outside what it was trained forExact facts and calculations, without help
ExampleAn order confirmation after every purchaseA spam filter or a sales forecastChatGPT, Claude, Gemini, Copilot
What to watchWho maintains the rules?Enough good data to learn fromSources, privacy and a human who checks

Swipe sideways to see all columns →

In practice they work together. A workflow with fixed rules, in which generative AI reads the free text, is often exactly what you need.

Frequently asked questions about generative AI

What does GenAI mean?

GenAI is short for generative AI. So it isn't a different kind of AI, just a shorter name. It refers to AI that creates something new, such as text, images or code.

Is generative AI the same as ChatGPT?

No. Generative AI is the technology; ChatGPT is an app from OpenAI that uses it. Claude, Gemini and Microsoft Copilot are other examples. You can also use the same models without the app, for instance in a workflow that reads emails. A comparison is in ChatGPT, Copilot or Claude.

What is the difference between generative AI and an AI agent?

Generative AI is the technology that reads and writes. An AI agent uses that technology to take steps by itself: it gets a goal, uses your systems and prepares the result. A chatbot talks, an agent acts. Agents are phase 4 of AI adoption. More in what is an AI agent?

Is generative AI safe for company data?

Yes, if you set it up properly. Use business versions that don't train on your data by default, sign a data processing agreement and record which data may go into which tool. Free consumer versions don't offer that certainty. Also read using AI safely.

Is generative AI allowed under the EU AI Act?

Usually, yes. The AI Act bans a few applications and sets strict requirements for high-risk ones, such as AI that helps with recruitment and selection. For most office applications it's about care and transparency. You do need to work on your people's AI literacy. And if you use AI to make images, audio or video that look real, you make clear that it's AI. More in the EU AI Act for SMEs. This is an explanation, not legal advice.

What does generative AI cost a business?

For a tool such as ChatGPT, Claude or Copilot you usually pay a fixed amount per user per month; check the current price with the provider. If you want AI to really take over work in your processes, building, integrations and maintenance come on top. At NinA that starts with the AI Quick Scan at € 6,000. The AI Partnership then costs € 4,500, € 7,500 or € 12,000 a month, for a minimum of twelve months. We only start when the business case pays back at least twice in the first year. All amounts exclude VAT.

Do I need an IT department?

No. For phases 1 and 2 you mainly need clear agreements and a trained team. For workflows and agents, someone has to build the integrations and handle maintenance. That can be your own IT team, but also a partner. Still useful: someone who knows your systems and keeps an eye on security.

Where can generative AI lighten your work?

In a fifteen-minute intro call we look at which phase you're in, which work lends itself to AI and what a sensible first step is.

  1. 01

    Intro call

    Fifteen minutes, no strings. Where does work get stuck and what do you want to achieve?

  2. 02

    AI Quick Scan

    One day on site. Within a week, a business case and a roadmap.

  3. 03

    AI Partnership

    A dedicated team that builds, trains and shows what it delivers every month.

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