The market is flooded with generic AI writing tools and yet another SaaS subscription. We build custom AI wired into your CRM, CMS and ad platforms — content at scale, campaign automation, SEO/AEO and personalization — and you own the code.
Last updated: 11 June 2026
AI for marketing pairs content generation, campaign automation, SEO/AEO and personalization with your own data and stack. Crux Digits builds custom systems on fixed prices: an AI audit for €2,500, a proof of concept for €20,000, and production from €50,000 — no per-seat SaaS lock-in, and you own the code.
Generic tools bolt a chatbot onto a blank page. The wins come when AI is wired into the systems where your marketing actually runs — your CRM, CMS, analytics and ad accounts — so it works from your data, your brand voice and your funnel, not a stock model with no context.
A few of the highest-leverage places we deploy custom AI for marketing teams and agencies:
| Use case | What the AI does | Outcome |
|---|---|---|
| Content production | Generates on-brand drafts and variants from your product data and past top performers | Ship more content per week without hiring, editors stay in control |
| Campaign automation | Scores and segments leads, then triggers CRM and ad actions in real time | Faster follow-up, less manual routing, higher qualified-lead rate |
| SEO & AEO | Builds topic clusters, optimizes pages and structures answers for AI search | More organic reach across Google and answer engines |
| Personalization | Tailors copy, offers and email flows per segment from live behaviour | Higher relevance and conversion without a bigger team |
A generic AI writing tool produces average copy from a model that has never seen your customers, your CRM or your results — and every competitor pays for the same one. Custom AI is different: it is trained and wired into your stack, so it draws on your data, respects your brand rules and pushes actions straight into the systems you already use. It is EU AI Act-ready, it does not leak your data into someone else's SaaS, and — critically — you own the code. No per-seat pricing that punishes you for growing, no vendor holding your workflow hostage. See how the same principle drives our AI automation work.
Fixed prices, no hourly surprises. We start with an AI audit for €2,500 to map where AI pays off in your marketing, build a proof of concept for €20,000 to prove it on one real workflow, and take the winners to production from €50,000. You own everything we build.
Our path keeps risk low and momentum high. First the audit (€2,500): we review your marketing stack, data and workflows and pick the use cases with the clearest payoff. Then a proof of concept (€20,000): one working system, integrated into your CRM or CMS, measured against a real target. When it earns its place, we move to production (from €50,000) — hardened, documented and handed over as code you own. Start with a free AI-readiness scan or the full pricing.
Fixed prices, not hourly rates: €2,500 audit, €20,000 proof of concept, production from €50,000. The audit is the low-risk way to see where AI actually pays off before you commit to a build. Everything we ship is code you own outright.
Those are generic tools with no access to your systems. Every competitor can use the same ones. We build AI wired into your stack, grounded in your data and your brand voice, so the output is accurate and can trigger real actions. You own the code instead of renting per seat.
Yes, and integration is the whole point. We connect the AI to the tools your marketing already runs on, so it works from live data and pushes actions back into those systems instead of living in a separate silo. Your team keeps the tools it knows.
Yes, and marketing AI usually sits in the lower-risk tiers. Those still need clear data handling, human oversight where decisions matter, and documentation of how each system works. Because it runs in your environment on your data, customer records never leave for a third-party SaaS.
Yes — the code, the models and the integrations. Unlike a SaaS subscription, there is no per-seat licence and no vendor lock-in. If we ever part ways, the system keeps running and your own team can maintain or extend it.
Stop renting generic tools every competitor already uses. Start with a €2,500 audit and see exactly where custom AI pays off in your marketing.
Book your AI audit