[BUG CLIENT]: client.chat.parse throws an error

[augho]

Python -VV

Python 3.13.0 (tags/v3.13.0:60403a5, Oct 7 2024, 09:38:07) [MSC v.1941 64 bit (AMD64)]

Pip Freeze

annotated-types==0.7.0

anyio==4.11.0

certifi==2025.10.5

charset-normalizer==3.4.4

dotenv==0.9.9

eval_type_backport==0.2.2

h11==0.16.0

httpcore==1.0.9

httpx==0.28.1

idna==3.11

invoke==2.2.1

mistralai==1.9.11

pydantic==2.12.3

pydantic_core==2.41.4

python-dateutil==2.9.0.post0

python-dotenv==1.1.1

PyYAML==6.0.3

requests==2.32.5

six==1.17.0

sniffio==1.3.1

typing-inspection==0.4.2

typing_extensions==4.15.0

urllib3==2.5.0

Reproduction Steps

I followed the documentation and got a json decode error

Expected Behavior

Return an output without throwing

Additional Context

On the following line

response = self.client.chat.parse(

        model="codestral-latest",

        messages=[{"role": "user", "content": "I recently read 'To kill a Mockingbird' by Harper Lee"}],

        response_format=BookModel

    )

Error:

File "<path>\.venv\Lib\site-packages\mistralai\chat.py", line 42, in parse

    parsed_response = convert_to_parsed_chat_completion_response(

        response, response_format

    )

  File "<path>\.venv\Lib\site-packages\mistralai\extra\struct_chat.py", line 27, in convert_to_parsed_chat_completion_response

    parsed_message.parsed = pydantic_model_from_json(json.loads(parsed_message.content), response_format)

                                                     ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^

  File "C:\Program Files\Python313\Lib\json\__init__.py", line 346, in loads

    return _default_decoder.decode(s)

           ~~~~~~~~~~~~~~~~~~~~~~~^^^

  File "C:\Program Files\Python313\Lib\json\decoder.py", line 344, in decode

    obj, end = self.raw_decode(s, idx=_w(s, 0).end())

               ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^

  File "C:\Program Files\Python313\Lib\json\decoder.py", line 362, in raw_decode

    raise JSONDecodeError("Expecting value", s, err.value) from None

json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

The model is codestral-2503 and the class BookModel is the same as in the documentation

Suggested Solutions

No response