Sunday, 26 April 2026← All articles
We talk about "AI" as if it were one single thing. In reality, under the hood, there is a model: the engine that generates the answers. The choice of that engine is not a technical detail, it is a strategic choice.
"Closed" model vs "open source", in plain terms
- A closed model (OpenAI's behind ChatGPT, for example) is a black box rented out by an American company. The price and the rules can change overnight.
- An open source model is open: you can host it yourself, in Europe, and its cost is predictable.
Our choice: an open-source engine by default
chyll is a custom AI studio: we build your system, wired to your tools, and it runs by default on a high-performing open-source model. Concretely, for you:
- Predictable cost: no nasty surprise on the bill because a provider tripled its rates.
- Data in Europe: your information does not get shipped to American servers by default. Hosted in Europe, GDPR-compliant, and your data is never used to train models.
- No lock-in: if a player changes its rules, your business does not grind to a halt.
"Do I have to take care of anything?"
No. Choosing the engine, configuring it and hosting it is our job. No API key to create, no account with a model provider, no technical settings. We build the system and run it for you.
The right model is not the one with the most headlines: it is the one that does the work, without wrecking your budget or exposing your data.