Skills can specialize our models to specific tasks or styles. For instance, the summarization skill of orion-fr enables it to generate summaries of the input text, without crafting a custom prompt. Skills make models more consistent, by focusing them on a task, and they can make smaller and cheaper models competitive with larger ones. Skills can also be used to shift the model to a specific style (e.g. of a famous author, legalese, etc.). If you are familiar with machine learning, skills are similar to fine-tuning.