Build vs Buy – How AI Has Changed the Economics of Mathematical Software — and Why In-House Systems Now Make Sense

Are you paying expensive subscriptions to vendors for mathematical software? Learn how we can help you bring the capability in-house, lowering costs and customizing the software for your needs at the same time.

For decades, companies from mining to medical technology to financial services have relied on large and expensive software vendors for mathematical tools — simulation, industry optimisation and logistics, financial analytics, and domain-specific modelling software.

Building such systems internally required:

  • A large team
  • A long development cycle
  • Deep specialised expertise

In many cases, firms could not justify the expense of building their own software in-house, leaving them at the mercy of high and on-going software subscription fees.

Thanks to AI, that has now changed — fundamentally.

The shift: AI has collapsed the cost of mathematical coding

Modern AI tools like ChatGPT and Github Copilot have dramatically accelerated:

  • implementation of mathematical models and numerical solvers
  • building graphing and visualization tools
  • creation of unit test frameworks
  • documentation of models

What previously required a team of 5–10 experts over months, can now often be achieved by 1–2 strong PhD developers with AI assistance in weeks.

AI often does not eliminate the need for expertise — but dramatically increases the productivity of experts.

The old model: buy expensive, general-purpose software

Historically, firms had little choice but to purchase systems which were:

  • expensive
  • large and complex
  • general-purpose

And crucially: they were designed for everyone, not for your specific problem.

The new model: build exactly and only what you need

An important shift is this: Software no longer needs to be general-purpose to justify its cost.

With AI-assisted development, firms can now build highly specialised, mathematically rigorous tools tailored to their exact workflows.

Large vendors still offer:

  • standardisation
  • support
  • regulatory acceptance

But they also come with:

  • high costs
  • rigid systems
  • potentially steep learning curve and complex configuration
  • poor alignment with specific workflows

In many cases, firms are paying for complexity they do not need.

Bespoke in-house systems offer:

  • exact alignment with business processes
  • faster iteration and adaptation
  • ownership of intellectual property
  • lower long-term cost

And now, thanks to AI, they are far more economically viable than they were previously.

How we help

At Genius Mathematics Consultants, we specialise in:

  • designing and building bespoke mathematical software
  • replacing expensive vendor systems with targeted solutions
  • delivering high-performance, production-ready tools

We focus on simulation, modelling, optimisation, and analytics across a wide range of industries.

Conclusion

AI has significantly changed the economics of mathematical software.

What was once too expensive, too complex, and too slow to build is now practical, fast, and highly cost-effective.

For many firms, the question is now:

“Why are we still paying a vendor for something we could own?”

Examples of tools now viable in-house

Engineering simulation tools

  • custom finite element solvers for specific components
  • thermal or stress models tailored to a single product line
  • simplified computational fluid dynamics models for internal use

Financial services

  • derivative pricing models
  • risk analytics
  • trading tools and backtesting
  • portfolio optimization

Scientific and laboratory systems

  • automated experiment pipelines
  • data analysis and visualisation systems
  • parameter estimation and model fitting tools

Medical and healthcare operations

  • patient flow simulation
  • scheduling and resource allocation models
  • treatment pathway optimisation

Construction and architecture tools

  • site layout optimisation tools
  • cost estimation and material usage models
  • structural sanity-check systems
  • project simulation tools

Logistics and operational systems

  • classic optimization including scheduling, logistics and supply chain
  • route simulation under uncertainty
  • warehouse layout models
  • demand forecasting systems
  • real-time operational dashboards

Manufacturing and process engineering

  • defect detection using computer vision
  • process control models
  • yield prediction systems
  • predictive maintenance tools

Digital twins and simulation environments

  • digital twins of operations
  • training simulations
  • scenario testing environments