Update README.md

README.md

@@ -26,6 +26,8 @@ pipeline_tag: text-generation
 Helium-1 preview is a lightweight language model with 2B parameters, targeting edge and mobile devices.
 It supports the following languages: English, French, German, Italian, Portuguese, Spanish.
 
+**⚠️ Helium-1 Preview is a base model, which was not fine-tuned to follow instructions or human preferences. For most downstream use cases, the model should be aligned with supervised fine-tuning, RLHF or related methods.**
+
 - **Developed by:** Kyutai
 - **Model type:** Large Language Model
 - **Language(s) (NLP):** English, French, German, Italian, Portuguese, Spanish