[simonw]

I use whatever what template is baked into the GGUF file.

You can click on the little info icon on Hugging Face to see that directly.

For https://huggingface.co/matteogeniaccio/phi-4/tree/main?show_... that's this:

  {% for message in messages %}{% if
  (message['role'] == 'system')
  %}{{'<|im_start|>system<|im_sep|>' +
  message['content'] + '<|im_end|>'}}{%
  elif (message['role'] == 'user')
  %}{{'<|im_start|>user<|im_sep|>' +
  message['content'] +
  '<|im_end|><|im_start|>assistant<|im_sep|>'}}{%
  elif (message['role'] == 'assistant')
  %}{{message['content'] + '<|im_end|>'}}{%
  endif %}{% endfor %}