Update README.md

README.md

@@ -29,6 +29,8 @@ PLLuM is a family of large language models (LLMs) specialized in Polish and othe
 
 Below is a summary of the main PLLuM models, including their licenses, bases, and parameter sizes. All model names link to a specific Hugging Face resources, while the base models and licenses link to their respective sources or license references. Note that all *-nc-* models are intended to non-commercial use.
 
+The models with fully open licenses are continuously pretrained on approximately 30 billion tokens of Polish text due to copyright considerations. The models with CC-BY-NC-4.0 licenses used approximately 150 billion tokens of Polish text. The models with the -nc and -chat suffix were aligned on human preferences and are generally safer and more efficient to use in dialog,  general purpose scenarios.
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 | Model Name                                            | Params | License                                                                                                                   | Based On                                                                                                             |
 |-------------------------------------------------------|----------------------|---------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------|
 | [Llama-PLLuM-8B-base](https://huggingface.co/CYFRAGOVPL/Llama-PLLuM-8B-base)             | 8B                   | [Llama 3.1](https://huggingface.co/meta-llama/Llama-3.1-8B/blob/main/LICENSE)                                   | [Llama3.1-8B](https://huggingface.co/meta-llama/Llama-3.1-8B)                                                       |