How to create an AI model

Creating an AI model means combining computer science, maths and hands-on pro­gram­ming to build software that can handle tasks usually carried out by humans. These include everything from re­cog­nising images to un­der­stand­ing language and making decisions based on data.

What does creating an AI model involve?

The rise of large language models (LLMs) like ChatGPT and Llama has led many companies to ask them­selves: can we create our own AI model? And the answer is, yes! But what does creating an AI model mean? It means designing software that can learn patterns from data and use those patterns to produce the right kind of results. Depending on the goal, companies can adapt an existing model or build and train a new model from scratch.

Much of the work happens before the model is trained. First, the data has to be collected and cleaned so the model can actually use it. Then de­velopers choose a suitable model and algorithm based on the task at hand – be it clas­si­fy­ing data or making pre­dic­tions. The model is then trained, tested and optimised. De­velopers review the results and adjust the model para­met­ers ac­cord­ingly. They also look out for problems like biased or in­com­plete data during the pro­gram­ming stage. Once the model performs reliably, it can be in­teg­rated into existing software or business processes. Even then, the work is not finished. AI models need to be monitored, main­tained and updated so they continue to deliver reliable results over time.

Which pro­gram­ming languages are used to create AI models?

Different pro­gram­ming languages are used to create AI models, depending on what the model needs to do and how it will be used later. Some languages are better for research, testing and pro­to­types, while others are better suited to large-scale business use.

• Python: Python is the most widely used language for creating AI models. It is easy to read, re­l­at­ively easy to learn and supported by a large number of AI and machine learning libraries. This lets you build and test complex models with re­l­at­ively little code in com­par­is­on.
• R: R pro­gram­ming is mainly used for stat­ist­ics, data analysis and visu­al­isa­tion. When creating an AI model, R pro­gram­ming is often used for exploring data, running math­em­at­ic­al eval­u­ations and sup­port­ing research. However, it is less common in pro­duc­tion ap­plic­a­tions than Python.
• Java: Java is often used in large-scale en­ter­prise software. Java is a good choice when an AI model needs to work with existing business software or fit into a complex IT en­vir­on­ment. It scales well and performs reliably in en­ter­prise settings, but it usually takes more de­vel­op­ment effort than Python.
• C++: C++ is used when per­form­ance really matters. Many AI frame­works rely on C++ behind the scenes, and de­velopers use it to optimise tasks that require a lot of computing power. However, C++ is harder to learn and less beginner-friendly than Python.

What tools help when creating AI models?

Spe­cial­ised tools and frame­works make it much easier to create AI models. They handle many of the technical steps involved in working with data, training models and testing results. This lets de­velopers focus on the model’s logic, ar­chi­tec­ture and output quality.

Tensor­Flow

Tensor­Flow is a widely used machine learning framework, par­tic­u­larly well suited to building large, complex neural networks. It works well for research and in the real world and trained models can run on CPUs, GPUs as well as spe­cial­ised AI chips. Tensor­Flow also scales well, which makes it a strong choice for companies that want to create their own AI models and make them a lasting part of their op­er­a­tions.

PyTorch

PyTorch is popular in research because it makes working with neural networks flexible and intuitive. Changes to a model can be im­ple­men­ted and tested quickly, making PyTorch well suited for ex­per­i­ment­a­tion and pro­to­typ­ing. It is also in­creas­ingly being used outside research en­vir­on­ments.

Jupyter Notebook

Jupyter Notebook is an in­ter­act­ive de­vel­op­ment en­vir­on­ment that combines code, notes and visu­al­isa­tions in one single document. This makes it useful for doc­u­ment­ing ex­per­i­ments, ex­plain­ing results, and reviewing work step by step. Jupyter Notebook is ideal for learning and data analysis but is less suited to models that need to run reliably in live software. That being said, its in­ter­act­ive format makes it a popular choice during the early stages of creating an AI model.

Scikit-learn

Scikit-learn is a library for tra­di­tion­al machine learning. It provides many ready-to-use AI al­gorithms for tasks such as clas­si­fic­a­tion, re­gres­sion and clus­ter­ing. The library is re­l­at­ively easy to use, which makes it a good choice for beginners and for AI models that do not require large neural networks. However, Scikit-learn only offers limited support for deep learning, so de­velopers usually use other tools for building neural networks.

Why creating AI models matters for companies

AI helps companies analyse large volumes of data quickly and ef­fi­ciently and turn that data into ac­tion­able insights. It can also automate many processes, saving time, reducing costs and lowering the risk of errors. As a result, companies can make more decisions based on data rather than relying only on gut feeling or past ex­per­i­ence.

Customer service is a good example: chatbots, AI-powered call centres and in­tel­li­gent as­sist­ance systems can improve avail­ab­il­ity and response times. Companies can also use AI to create per­son­al­ised offers and services that are more closely tailored to in­di­vidu­al customer needs. Beyond that, AI can lay the ground­work for new products, services and business models. Companies that build AI expertise early on can gain major long-term com­pet­it­ive ad­vant­ages.

How much does it cost to create an AI model?

The cost of creating an AI model can vary widely. It depends on the scope of the project, whether the necessary data is already available, and how accurate or reliable the model needs to be. If companies build the model in-house, staffing is usually the biggest expense. In the UK, spe­cial­ists such as AI de­velopers, data sci­ent­ists and ML engineers can command salaries of £60,000 to well over £100,000, depending on their role, ex­per­i­ence and location. Companies also need the right in­fra­struc­ture. That may mean powerful hardware such as GPUs or ongoing cloud resources for training and running the model. Depending on the workload, these costs can reach hundreds or even thousands of pounds per month. Time is another important factor that shouldn’t be over­looked. De­vel­op­ment, training, and testing can often take several months, which can sig­ni­fic­antly affect the overall cost.

External service providers or agencies can help companies get started faster, but they usually charge high daily rates. That means even a small project can quickly reach the low five-figure range, while complex, company-wide solutions can cost six figures or more. Companies also need to plan for ongoing costs as­so­ci­ated with data main­ten­ance, model mon­it­or­ing and support.

How to create an AI model step by step

The process for creating a new AI model es­sen­tially looks like this:

1. Start by clearly defining your problem and deciding what the AI model should be able to ac­com­plish. This also means checking whether the problem is actually a good fit for AI or whether tra­di­tion­al software would be enough.
2. If the decision is made in favour of an AI-based solution, the next step is to identify and collect the right data. The better the data, the better the model can perform. Before training begins, the raw data needs to be cleaned, struc­tured and, if necessary, enriched so the model can use it.
3. Next, the de­velopers need to choose the right algorithm and model type for the task at hand, whether that’s clas­si­fic­a­tion, pattern re­cog­ni­tion, pre­dic­tion or speech re­cog­ni­tion.
4. The model is then trained using the prepared data. During this stage, de­velopers will adjust the model para­met­ers to improve the results.
5. After training, the model is tested with separate test data to check its accuracy and re­li­ab­il­ity.
6. Any errors, biases, or weak­nesses found during testing are then analysed and corrected through im­prove­ments to the model or the data. This cycle of training, testing, and ad­just­ment is usually repeated several times.

Once the AI model has been suc­cess­fully created, it can be in­teg­rated into existing software or business processes. The work does not stop once the model is in use. It needs to be monitored so teams can spot drops in per­form­ance or shifts in the data the model receives. Regular updates, re­train­ing and ad­just­ments help keep the model reliable and up to date as con­di­tions change.