testbed/deepset-ai__haystack/releasenotes/notes/add-streaming-callback-run-param-to-hf-generators-5ebde8fad75cb49f.yaml

---
enhancements:
  - |
    Add `streaming_callback` run parameter to `HuggingFaceAPIGenerator` and `HuggingFaceLocalGenerator` to allow users to pass a callback function that will be called after each chunk of the response is generated.