Most SMEs do not need to train their own models. The difference between good and bad AI spending is decided at the integration layer, not in the underlying model.
The pattern that works: identify three or four high-frequency repetitive tasks, connect a model via API to the relevant internal data and measure time saved week over week.
The most common mistakes are buying all-in-one platforms that cover use cases the company does not have, or implementing AI in processes that first need to be organized.
With a budget of 300–600€ per month it is possible to automate support responses, internal report generation, document classification and sales assistance. The key is to start with one case and measure before scaling.