Phi-4 Bug Fixes by Unsloth (via) This explains why I was seeing weird <|im_end|>
suffexes during my experiments with Phi-4 the other day: it turns out the Phi-4 tokenizer definition as released by Microsoft had a bug in it, and there was a small bug in the chat template as well.
Daniel and Michael Han figured this out and have now published GGUF files with their fixes on Hugging Face.
Recent articles
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- LLM 0.27, the annotated release notes: GPT-5 and improved tool calling - 11th August 2025