chore: prompt format

README.md

@@ -28,6 +28,17 @@ StripedHyena is a hybrid architecture composed of multi-head, grouped-query atte
   - Improvement to training and inference-optimal scaling laws, compared to optimized Transformer architectures such as Llama-2.
   - Trained on sequences of up to 32k, allowing it to process longer prompts.
 
+### Prompt Format
+
+StripedHyena-Nous 7B uses ChatML as the prompt format:
+
+```
+<|im_start|>user
+Hello!<|im_end|>
+<|im_start|>assistant
+Hi there!<|im_end|>
+```
+
 ### Disclaimer 
 
 To use StripedHyena outside of the playground, you will need to install custom kernels. Please follow the instructions from the [standalone repository](https://github.com/togethercomputer/stripedhyena).