Pydantic models can be subclassed to inherit fields and validators from base classes. Naturally, autodoc_pydantic should also show these members. By default, sphinx autodoc does not include any member from base classes, though. However, sphinx autodoc provides a directive option named :inherited-members: which allows to include all members from all base classes except object (see docs here).
Unfortunately, this will also include all members from pydantic.BaseModel (e.g. copy(), schema() etc...) which is most likely not what one wants. Luckily, :inherited-members: takes a parameter which allows to exclude base classes. Hence, when supplying BaseModel as an argument for :inherited-members:, irrelevant members are ignored:
python
target.faq.inherited_members
reST
.. automodule:: target.faq.inherited_members
:inherited-members: BaseModelrendered output
target.faq.inherited_members