You have tried ChatGPT to draft your quotes, or Notion AI to summarise meeting notes. It helps, but it always stops at the same point: the tool knows nothing about your catalogue, your customers, or how you actually work. So the question comes up fast: should you stick with generic AI subscriptions, or invest in a solution built for your business?

Both exist for good reasons, and the most common mistake is not choosing the wrong side, but never seriously asking the question at all.

A generic AI SaaS (ChatGPT, Notion AI, Copilot) handles a universal need; a custom AI automates a process specific to your company, connected to your own tools and data. The right choice depends on what you are trying to solve, not on the current trend.

A generic AI SaaS: quick to start, but standardised

A ChatGPT Plus or Notion AI subscription costs a few tens of euros a month and works from the first login. It is unbeatable for drafting an email, rephrasing a text, or brainstorming a campaign idea.

The limit shows up as soon as the task becomes repetitive and specific to your trade: the tool does not know that your standard quote has seven mandatory lines, that your stock is managed in a particular piece of software, or that your customers always ask the same three questions. Every use stays manual, copy and paste after copy and paste.

Custom AI: built for your process, not for everyone

Custom AI starts from the opposite direction: it observes how you work today, then automates exactly that task, connected to your existing tools (CRM, inbox, website, spreadsheet). It does not replace ChatGPT, it solves a problem ChatGPT cannot solve on its own, because it has no access to your data.

It is the difference between an assistant that knows everything in general and a team member who knows your company in particular. Our 10 AI tools in production illustrate this kind of solution: a free diagnosis, a chatbot connected to a catalogue, automated appointment booking, all cases where a generic subscription would have changed nothing.

The signs that point toward custom AI

Three signs suggest a generic SaaS will no longer be enough:

  • You redo the same task every week (follow-ups, quotes, sorting messages) and can never fully automate it in the generic tool.
  • Your data is scattered across several pieces of software that the generic AI cannot cross-reference.
  • Your customers ask precise questions about your offer, your lead times, or your stock, which a generic chatbot cannot answer correctly.

The hidden cost of generic subscriptions over time

A 20 EUR monthly subscription looks harmless. But between ChatGPT, a transcription tool, an image generator, and a scheduling assistant, a small business often ends up stacking five or six different subscriptions, none connected to each other, for a total that easily exceeds the cost of a single integrated tool. Not counting the time lost moving information between these disconnected tools.

A third way: start small, let it grow

You do not have to pick a side permanently. The most sensible approach is to start with generic tools for one-off needs, then have a custom piece built as soon as a task becomes recurring and time-consuming. This is the approach we follow with every client: an upfront diagnosis to identify what genuinely deserves to be automated, before writing a single line of code.

Frequently asked questions

Does custom AI necessarily cost more than a SaaS subscription? Not necessarily. A monthly subscription looks cheaper at first glance, but its cost adds up over time and as needs grow, while a custom solution has an upfront development cost followed by generally lighter maintenance.

Can you combine both? Yes, this is actually the most common setup: generic tools for writing or brainstorming, and a custom piece for the repetitive tasks specific to the company.

How long does it take to build custom AI? For a first targeted tool (a chatbot connected to your catalogue, an appointment-booking assistant), expect generally a few weeks between the diagnosis and going live.

Torn between a generic AI subscription and a solution built for your business? Let's talk about your specific case: book a call for a free first conversation.