Fix Kimi-K2.5 tokenizer regression and _patch_mistral_regex AttributeError#45359
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ArthurZucker merged 1 commit intomainfrom Apr 13, 2026
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Fix Kimi-K2.5 tokenizer regression and _patch_mistral_regex AttributeError#45359ArthurZucker merged 1 commit intomainfrom
ArthurZucker merged 1 commit intomainfrom
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…Error Fixes #45356 Remove `kimi_k25` from `MODELS_WITH_INCORRECT_HUB_TOKENIZER_CLASS` — its remote `TikTokenTokenizer` is the only correct backend (no `tokenizer.json`, non-sequential added-token IDs that `TokenizersBackend` cannot reproduce). Also fix `_patch_mistral_regex`: the method receives the raw `tokenizers.Tokenizer` object, which has `.pre_tokenizer` directly, not `.backend_tokenizer.pre_tokenizer`. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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…Error (#45359) Fixes #45356 Remove `kimi_k25` from `MODELS_WITH_INCORRECT_HUB_TOKENIZER_CLASS` — its remote `TikTokenTokenizer` is the only correct backend (no `tokenizer.json`, non-sequential added-token IDs that `TokenizersBackend` cannot reproduce). Also fix `_patch_mistral_regex`: the method receives the raw `tokenizers.Tokenizer` object, which has `.pre_tokenizer` directly, not `.backend_tokenizer.pre_tokenizer`. Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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…Error (huggingface#45359) Fixes huggingface#45356 Remove `kimi_k25` from `MODELS_WITH_INCORRECT_HUB_TOKENIZER_CLASS` — its remote `TikTokenTokenizer` is the only correct backend (no `tokenizer.json`, non-sequential added-token IDs that `TokenizersBackend` cannot reproduce). Also fix `_patch_mistral_regex`: the method receives the raw `tokenizers.Tokenizer` object, which has `.pre_tokenizer` directly, not `.backend_tokenizer.pre_tokenizer`. Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Fixes #45356
Summary
kimi_k25fromMODELS_WITH_INCORRECT_HUB_TOKENIZER_CLASS: its remoteTikTokenTokenizeris the only correct backend — the model has notokenizer.json, and itsadded_tokens_decoderhas non-sequential IDs (gaps +[UNK]/[PAD]at 163838/163839) thatTokenizersBackend.add_tokens()can't reproduce, causing every token after ID 163588 to be assigned wrong IDs._patch_mistral_regex: usetokenizer.pre_tokenizerinstead oftokenizer.backend_tokenizer.pre_tokenizer— the method receives the rawtokenizers.Tokenizer, which doesn't have.backend_tokenizer.Test plan
AutoTokenizer.from_pretrained("moonshotai/Kimi-K2.5", trust_remote_code=True).decode([163607])returns'</think>'<think>hello</think>works