# The real cost of a local SLM: hardware is only 20% of the total

> Fuente canónica: https://apferrer.com/en/real-slm-cost-enterprise
> Autora: APFerrer · Forward Deployed Engineer con 17 años de trayectoria
> Idioma: en

GPU, MLOps, updates, security, staff. When someone sells you a €3,000 server for a local SLM, the real annual cost starts elsewhere.

## Frequently asked questions

### How much does it cost to run a local SLM in the enterprise?

Total annual cost usually lands at 3 to 5 times the initial hardware price, depending on in-house vs subcontracted operations. Hardware is the visible line; the rest is MLOps, staff, updates, security and continuity.

### Is dedicated MLOps staff needed?

Yes, dedicated or subcontracted. An MLOps engineer costs €55,000 to €80,000 gross per year in Spain. Outsourcing runs €60 to €120 per hour. Without this role, the system degrades in months.

### How often does the model need updating?

New models ship every few months. Migrating weights, revalidating prompts and adjusting the new version is recurring work, not a one-off. Without this effort the system stays anchored to a model that ages fast.

### Is hardware the biggest cost?

No. Hardware is only the visible line (€2,500 to €15,000 for a GPU server). Staff, MLOps, security and continuity typically add 3 to 5 times that figure per year.

### When does a local SLM pay off vs an API model?

When privacy is a hard requirement, when volume is massive and stable, or when you must operate offline. Otherwise, an API model is cheaper to run and faster to evolve.

## Source context

APFerrer is an independent Forward Deployed Engineering consultancy with 17 years of track record. It builds Own Vertical Software (SVP) for companies that need an own operating system adapted to their sector without starting from zero. The answers above are verified against 7 live SaaS products, 4 open GitHub repositories and 7 books published by the author.

## See also

- [Own Vertical Software](https://apferrer.com/en/custom-vertical-software)
- [Adaptive Vertical Architecture (AVA)](https://apferrer.com/en/adaptive-vertical-architecture)
- [Market price map](https://apferrer.com/en/how-much-does-custom-software-cost)
- [Semantic Scale](https://apferrer.com/en/semantic-scale)
- [Book free diagnostic](https://apferrer.com/en/book)

_Last updated: 2026-10-23_