Crux Digits is a Netherlands-based AI development agency and software studio. We build custom AI and software that runs in production — from proof of concept to a full system inside your stack. One team from strategy to launch, with fixed pricing, EU AI Act- and GDPR-ready.
Last updated: 11 June 2026
An AI development agency builds working AI software — not just advice, but code that runs. Where a consultancy stops at a report, a development agency takes the solution from first prototype to a production system that is integrated with your existing tools and maintained over time.
At Crux Digits you get both under one roof: the strategic eye of a consultant and an engineering team that actually builds it. No handover between vendors, no knowledge lost in translation. Want the strategy first? See our AI consulting in the Netherlands.
We build custom AI around your process and data — not a generic tool you have to bend your business around:
Full web applications and platforms with AI at the core — from internal tools to customer-facing products.
Agents that take actions across your systems: pulling data, deciding within rules, routing tasks and escalating exceptions.
Prediction, classification and anomaly detection, trained on your data and deployed inside your stack.
Grounded assistants and RAG systems built on your own knowledge — with source citation and guardrails.
Visual inspection, detection and quality control — on the edge or in the cloud.
Pipelines, warehouses and connectors to ERP, CRM and APIs — the foundation every model runs on.
Most agencies disappear after the first call and come back with a thick document. We don't. Once we understand your problem, we build a working MVP you can click — and shape it with you. We work in three fixed, transparent steps:
A prioritised opportunity list with ROI per use case and a clear build plan.
Working AI on your own data, in weeks — not months.
A full system, integrated, in production and maintained.
A build at Crux Digits never starts with a specification document — it starts with a working session. In the first call we walk through your process: what comes in, who decides what, where time and money leak out — and pick the one use case that moves the needle. By the second call there is a clickable MVP running on your own sample data. That prototype is not a demo for show; it is the instrument we use together to decide what is essential, what needs improving and what gets cut. From there we build in short sprints with fixed checkpoints, so you see the system take shape every week and can steer before anything becomes expensive to change.
The production phase is about integration and reliability rather than new features. We connect the system to your ERP, CRM or databases through standard APIs, set up monitoring for accuracy and drift, and document everything — code, models, pipelines and a runbook. At handover you own all of it outright, and your own team can take over maintenance if you want; we stay available for support and further development. A Proof of Concept typically takes four to six weeks; a full production launch runs three to six months depending on integrations and compliance requirements. Every phase has a scope and price agreed before work starts.
Having AI custom-built is not always the right answer, and an honest development agency says so out loud. Off-the-shelf AI tools are fine when your problem is generic: a standard chatbot, transcription, or writing suggestions. Custom wins as soon as one of four things is true: the tool needs to understand your specific process and domain language; you need deep integration with your existing systems; your data is too sensitive to send to an external SaaS; or the competitive advantage lies precisely in software your competitors cannot buy. In those cases the cost of working around a generic tool quickly exceeds the investment in your own solution.
We do that arithmetic before the build, not after it. The €2,500 audit produces a projected ROI per use case: what it costs, what it saves or earns per year, and how fast it pays back. If custom does not come out ahead, we recommend an existing tool — that is sometimes the advice, and it keeps the relationship honest. If it does come out ahead, you know exactly what you are signing up for: fixed price, fixed scope, and code that belongs to you.
From a nationally scalable decision-support system to computer vision on the building site — see our case studies.
A consultancy advises where AI adds value; a development agency actually builds the solution and takes it to production. Crux Digits does both with a single team, so nothing is lost between advice and delivery.
We work in fixed steps: AI Audit & Strategy €2,500, Proof of Concept €20,000 and Production Launch from €50,000 (excl. VAT). The audit always includes a projected ROI, so you know the return before you commit.
You do. All source code, trained models, pipelines and documentation are fully transferred to you at handover — no vendor lock-in, no ongoing licence fees.
Yes. Integration-first is our default — we connect via standard APIs, database connections or data pipelines to your ERP, CRM and other systems, without asking you to replace them.
Yes. We can lead the full build, embed with your developers, or hand over a clean, documented codebase for your team to own. We agree the model up front.
Most clients start within 5 business days of agreeing scope. A free 30-minute consultation is usually scheduled within days.
Start with a free 30-minute consultation — tell us your problem and we'll map the fastest route to a working system.
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