[BUG] CodeGen 2.5 Tokenizer cannot be initialized anymore

[AlEscher]

The code from https://huggingface.co/Salesforce/codegen25-7b-multi_P#causal-sampling-code-autocompletion and https://github.com/salesforce/CodeGen/tree/main/codegen25#sampling does not work currently.
Creating the tokenizer like

tokenizer = AutoTokenizer.from_pretrained("Salesforce/codegen25-7b-mono", trust_remote_code=True)
# or
tokenizer = AutoTokenizer.from_pretrained("Salesforce/codegen25-7b-multi", trust_remote_code=True)

gives an error:

Traceback (most recent call last):
  File "C:\teamscale\teamscale\server\com.teamscale.service\src\main\resources\com\teamscale\service\testimpact\embeddings_prioritization\ml\code_gen_embedder.py", line 4, in <module>
    tokenizer = AutoTokenizer.from_pretrained("Salesforce/codegen25-7b-multi", trust_remote_code=True)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\Alessandro\AppData\Local\Programs\Python\Python312\Lib\site-packages\transformers\models\auto\tokenization_auto.py", line 905, in from_pretrained
    return tokenizer_class.from_pretrained(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\Alessandro\AppData\Local\Programs\Python\Python312\Lib\site-packages\transformers\tokenization_utils_base.py", line 2213, in from_pretrained
    return cls._from_pretrained(
           ^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\Alessandro\AppData\Local\Programs\Python\Python312\Lib\site-packages\transformers\tokenization_utils_base.py", line 2447, in _from_pretrained
    tokenizer = cls(*init_inputs, **init_kwargs)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\Alessandro\.cache\huggingface\modules\transformers_modules\Salesforce\codegen25-7b-multi\0bdf3f45a09e4f53b333393205db1388634a0e2e\tokenization_codegen25.py", line 136, in __init__
    super().__init__(
  File "C:\Users\Alessandro\AppData\Local\Programs\Python\Python312\Lib\site-packages\transformers\tokenization_utils.py", line 435, in __init__
    super().__init__(**kwargs)
  File "C:\Users\Alessandro\AppData\Local\Programs\Python\Python312\Lib\site-packages\transformers\tokenization_utils_base.py", line 1592, in __init__
    raise AttributeError(f"{key} conflicts with the method {key} in {self.__class__.__name__}")
AttributeError: add_special_tokens conflicts with the method add_special_tokens in CodeGen25Tokenizer

I have installed tiktoken==0.8.0 as installation of tiktoken==0.4.0 via pip fails.

[AlEscher]

Seems to be an issue with transformers: huggingface/transformers#33453

[ahmedashraf443]

any fix for this I'm having trouble quantizing the model into gguf format

[AlEscher]

any fix for this I'm having trouble quantizing the model into gguf format

Only workaround I found for now is https://onetwobytes.com/2024/10/07/codegen2-5-llm-not-working-with-latest-huggingface-transformers/

[ahmedashraf443]

@AlEscher I tried converting it to ggml so that I can quantize it and convert it to gguf but I'm still having trouble. did you manage to quantize it or are you running the full weights?

[AlEscher]

@ahmedashraf443 I am running full weights. By installing the specified transformers version as in the article I am able to load the model and use it.

[ahmedashraf443]

Yeah i thought so . Sadly i can't run the full weights on my laptop and i tried quantuzing the model but it never works. Guess ill have to stick toqwen25.5-coder

[ai-nikolai]

Bumping this up, as it still doesn't work in 2026.

@AlEscher - any success since?

[ArthurZucker]

If you are using remote code, it is expected to not really work when we update code.