diff --git a/mp_api/client/core/client.py b/mp_api/client/core/client.py
index 38d94bf67..4cd98958c 100644
--- a/mp_api/client/core/client.py
+++ b/mp_api/client/core/client.py
@@ -21,9 +21,7 @@
 from typing import (
     TYPE_CHECKING,
     ForwardRef,
-    Generic,
     Optional,
-    TypeVar,
     get_args,
 )
 from urllib.parse import quote, urljoin
@@ -65,10 +63,8 @@
 
 SETTINGS = MAPIClientSettings()  # type: ignore
 
-T = TypeVar("T")
 
-
-class BaseRester(Generic[T]):
+class BaseRester:
     """Base client class with core stubs."""
 
     suffix: str = ""
@@ -140,15 +136,8 @@ def __init__(
         if not self.endpoint.endswith("/"):
             self.endpoint += "/"
 
-        if session:
-            self._session = session
-        else:
-            self._session = None  # type: ignore
-
-        if s3_client:
-            self._s3_client = s3_client
-        else:
-            self._s3_client = None
+        self._session = session
+        self._s3_client = s3_client
 
     @property
     def session(self) -> requests.Session:
@@ -596,7 +585,7 @@ def _submit_requests(  # noqa
             url: url used to make request
             use_document_model: if None, will defer to the self.use_document_model attribute
             parallel_param: parameter to parallelize requests with
-            num_chu: fieldsnky: Maximum number of chunks of data to yield. None will yield all possible.
+            num_chunks: Maximum number of chunks of data to yield. None will yield all possible.
             chunk_size: Number of data entries per chunk.
             timeout: Time in seconds to wait until a request timeout error is thrown
 
@@ -1077,7 +1066,9 @@ def _generate_returned_model(
         include_fields: dict[str, tuple[type, FieldInfo]] = {}
         for name in set_fields:
             field_copy = model_fields[name]._copy()
-            field_copy.default = None
+            if not field_copy.default_factory:
+                # Fields with a default_factory cannot also have a default in pydantic>=2.12.3
+                field_copy.default = None
             include_fields[name] = (
                 Optional[model_fields[name].annotation],
                 field_copy,
@@ -1097,8 +1088,6 @@ def _generate_returned_model(
             ),
             __module__=self.document_model.__module__,
         )
-        # if other_vars:
-        #     data_model.model_rebuild(_types_namespace=other_vars)
 
         orig_rester_name = self.document_model.__name__
 
@@ -1151,7 +1140,7 @@ def _query_resource_data(
         suburl: str | None = None,
         use_document_model: bool | None = None,
         timeout: int | None = None,
-    ) -> list[T] | list[dict]:
+    ) -> list[BaseModel] | list[dict]:
         """Query the endpoint for a list of documents without associated meta information. Only
         returns a single page of results.
 
@@ -1181,7 +1170,7 @@ def _search(
         all_fields: bool = True,
         fields: list[str] | None = None,
         **kwargs,
-    ) -> list[T] | list[dict]:
+    ) -> list[BaseModel] | list[dict]:
         """A generic search method to retrieve documents matching specific parameters.
 
         Arguments:
@@ -1216,7 +1205,7 @@ def get_data_by_id(
         self,
         document_id: str,
         fields: list[str] | None = None,
-    ) -> T | dict:
+    ) -> BaseModel | dict:
         warnings.warn(
             "get_data_by_id is deprecated and will be removed soon. Please use the search method instead.",
             DeprecationWarning,
@@ -1251,7 +1240,7 @@ def _get_all_documents(
         fields=None,
         chunk_size=1000,
         num_chunks=None,
-    ) -> list[T] | list[dict]:
+    ) -> list[BaseModel] | list[dict]:
         """Iterates over pages until all documents are retrieved. Displays
         progress using tqdm. This method is designed to give a common
         implementation for the search_* methods on various endpoints. See
diff --git a/mp_api/client/mprester.py b/mp_api/client/mprester.py
index c3fffcbb3..3fdc07f92 100644
--- a/mp_api/client/mprester.py
+++ b/mp_api/client/mprester.py
@@ -1203,10 +1203,11 @@ def get_entries_in_chemsys(
 
         elements_set = set(elements)  # remove duplicate elements
 
-        all_chemsyses = []
-        for i in range(len(elements_set)):
-            for els in itertools.combinations(elements_set, i + 1):
-                all_chemsyses.append("-".join(sorted(els)))
+        all_chemsyses = [
+            "-".join(sorted(els))
+            for i in range(len(elements_set))
+            for els in itertools.combinations(elements_set, i + 1)
+        ]
 
         entries = []
 
diff --git a/mp_api/client/routes/_general_store.py b/mp_api/client/routes/_general_store.py
index 0176c5a4f..659d06068 100644
--- a/mp_api/client/routes/_general_store.py
+++ b/mp_api/client/routes/_general_store.py
@@ -5,7 +5,7 @@
 from mp_api.client.core import BaseRester
 
 
-class GeneralStoreRester(BaseRester[GeneralStoreDoc]):  # pragma: no cover
+class GeneralStoreRester(BaseRester):  # pragma: no cover
     suffix = "_general_store"
     document_model = GeneralStoreDoc  # type: ignore
     primary_key = "submission_id"
diff --git a/mp_api/client/routes/_messages.py b/mp_api/client/routes/_messages.py
index 6526e7ca2..64f796ad0 100644
--- a/mp_api/client/routes/_messages.py
+++ b/mp_api/client/routes/_messages.py
@@ -7,7 +7,7 @@
 from mp_api.client.core import BaseRester
 
 
-class MessagesRester(BaseRester[MessagesDoc]):  # pragma: no cover
+class MessagesRester(BaseRester):  # pragma: no cover
     suffix = "_messages"
     document_model = MessagesDoc  # type: ignore
     primary_key = "title"
diff --git a/mp_api/client/routes/_user_settings.py b/mp_api/client/routes/_user_settings.py
index 90f54aaca..0f8d0bf39 100644
--- a/mp_api/client/routes/_user_settings.py
+++ b/mp_api/client/routes/_user_settings.py
@@ -5,7 +5,7 @@
 from mp_api.client.core import BaseRester
 
 
-class UserSettingsRester(BaseRester[UserSettingsDoc]):  # pragma: no cover
+class UserSettingsRester(BaseRester):  # pragma: no cover
     suffix = "_user_settings"
     document_model = UserSettingsDoc  # type: ignore
     primary_key = "consumer_id"
diff --git a/mp_api/client/routes/materials/absorption.py b/mp_api/client/routes/materials/absorption.py
index 9ef7ff338..c8d2c0c45 100644
--- a/mp_api/client/routes/materials/absorption.py
+++ b/mp_api/client/routes/materials/absorption.py
@@ -8,7 +8,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class AbsorptionRester(BaseRester[AbsorptionDoc]):
+class AbsorptionRester(BaseRester):
     suffix = "materials/absorption"
     document_model = AbsorptionDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/alloys.py b/mp_api/client/routes/materials/alloys.py
index 53b79064a..fc07d2a58 100644
--- a/mp_api/client/routes/materials/alloys.py
+++ b/mp_api/client/routes/materials/alloys.py
@@ -8,7 +8,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class AlloysRester(BaseRester[AlloyPairDoc]):
+class AlloysRester(BaseRester):
     suffix = "materials/alloys"
     document_model = AlloyPairDoc  # type: ignore
     primary_key = "pair_id"
diff --git a/mp_api/client/routes/materials/bonds.py b/mp_api/client/routes/materials/bonds.py
index bdbe4ca2d..9009bc4b5 100644
--- a/mp_api/client/routes/materials/bonds.py
+++ b/mp_api/client/routes/materials/bonds.py
@@ -8,7 +8,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class BondsRester(BaseRester[BondingDoc]):
+class BondsRester(BaseRester):
     suffix = "materials/bonds"
     document_model = BondingDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/chemenv.py b/mp_api/client/routes/materials/chemenv.py
index bc05fff85..d3a029fd7 100644
--- a/mp_api/client/routes/materials/chemenv.py
+++ b/mp_api/client/routes/materials/chemenv.py
@@ -14,7 +14,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class ChemenvRester(BaseRester[ChemEnvDoc]):
+class ChemenvRester(BaseRester):
     suffix = "materials/chemenv"
     document_model = ChemEnvDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/dielectric.py b/mp_api/client/routes/materials/dielectric.py
index 4adedc37e..2723f94cd 100644
--- a/mp_api/client/routes/materials/dielectric.py
+++ b/mp_api/client/routes/materials/dielectric.py
@@ -8,7 +8,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class DielectricRester(BaseRester[DielectricDoc]):
+class DielectricRester(BaseRester):
     suffix = "materials/dielectric"
     document_model = DielectricDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/doi.py b/mp_api/client/routes/materials/doi.py
index bb66f185d..bc8e766b6 100644
--- a/mp_api/client/routes/materials/doi.py
+++ b/mp_api/client/routes/materials/doi.py
@@ -8,7 +8,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class DOIRester(BaseRester[DOIDoc]):
+class DOIRester(BaseRester):
     suffix = "doi"
     document_model = DOIDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/elasticity.py b/mp_api/client/routes/materials/elasticity.py
index e6c416968..d2099cdca 100644
--- a/mp_api/client/routes/materials/elasticity.py
+++ b/mp_api/client/routes/materials/elasticity.py
@@ -8,7 +8,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class ElasticityRester(BaseRester[ElasticityDoc]):
+class ElasticityRester(BaseRester):
     suffix = "materials/elasticity"
     document_model = ElasticityDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/electronic_structure.py b/mp_api/client/routes/materials/electronic_structure.py
index c43a88afd..ccaaaad83 100644
--- a/mp_api/client/routes/materials/electronic_structure.py
+++ b/mp_api/client/routes/materials/electronic_structure.py
@@ -16,7 +16,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class ElectronicStructureRester(BaseRester[ElectronicStructureDoc]):
+class ElectronicStructureRester(BaseRester):
     suffix = "materials/electronic_structure"
     document_model = ElectronicStructureDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/eos.py b/mp_api/client/routes/materials/eos.py
index d77dfd459..26a14fef2 100644
--- a/mp_api/client/routes/materials/eos.py
+++ b/mp_api/client/routes/materials/eos.py
@@ -8,7 +8,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class EOSRester(BaseRester[EOSDoc]):
+class EOSRester(BaseRester):
     suffix = "materials/eos"
     document_model = EOSDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/grain_boundaries.py b/mp_api/client/routes/materials/grain_boundaries.py
index 1721ccd64..fa11bbfac 100644
--- a/mp_api/client/routes/materials/grain_boundaries.py
+++ b/mp_api/client/routes/materials/grain_boundaries.py
@@ -8,7 +8,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class GrainBoundaryRester(BaseRester[GrainBoundaryDoc]):
+class GrainBoundaryRester(BaseRester):
     suffix = "materials/grain_boundaries"
     document_model = GrainBoundaryDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/magnetism.py b/mp_api/client/routes/materials/magnetism.py
index 96c3c59a6..da19f7274 100644
--- a/mp_api/client/routes/materials/magnetism.py
+++ b/mp_api/client/routes/materials/magnetism.py
@@ -9,7 +9,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class MagnetismRester(BaseRester[MagnetismDoc]):
+class MagnetismRester(BaseRester):
     suffix = "materials/magnetism"
     document_model = MagnetismDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/materials.py b/mp_api/client/routes/materials/materials.py
index a7bff5c46..df24e93b4 100644
--- a/mp_api/client/routes/materials/materials.py
+++ b/mp_api/client/routes/materials/materials.py
@@ -40,7 +40,7 @@
 _EMMET_SETTINGS = EmmetSettings()  # type: ignore
 
 
-class MaterialsRester(BaseRester[MaterialsDoc]):
+class MaterialsRester(BaseRester):
     suffix = "materials/core"
     document_model = MaterialsDoc  # type: ignore
     supports_versions = True
diff --git a/mp_api/client/routes/materials/oxidation_states.py b/mp_api/client/routes/materials/oxidation_states.py
index fca6e93de..769b4ef81 100644
--- a/mp_api/client/routes/materials/oxidation_states.py
+++ b/mp_api/client/routes/materials/oxidation_states.py
@@ -8,7 +8,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class OxidationStatesRester(BaseRester[OxidationStateDoc]):
+class OxidationStatesRester(BaseRester):
     suffix = "materials/oxidation_states"
     document_model = OxidationStateDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/phonon.py b/mp_api/client/routes/materials/phonon.py
index 605591048..24eb17ec3 100644
--- a/mp_api/client/routes/materials/phonon.py
+++ b/mp_api/client/routes/materials/phonon.py
@@ -9,7 +9,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class PhononRester(BaseRester[PhononBSDOSDoc]):
+class PhononRester(BaseRester):
     suffix = "materials/phonon"
     document_model = PhononBSDOSDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/piezo.py b/mp_api/client/routes/materials/piezo.py
index 306cf5069..ee76e1cd6 100644
--- a/mp_api/client/routes/materials/piezo.py
+++ b/mp_api/client/routes/materials/piezo.py
@@ -8,7 +8,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class PiezoRester(BaseRester[PiezoelectricDoc]):
+class PiezoRester(BaseRester):
     suffix = "materials/piezoelectric"
     document_model = PiezoelectricDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/provenance.py b/mp_api/client/routes/materials/provenance.py
index b4ff240fc..da837e17c 100644
--- a/mp_api/client/routes/materials/provenance.py
+++ b/mp_api/client/routes/materials/provenance.py
@@ -6,7 +6,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class ProvenanceRester(BaseRester[ProvenanceDoc]):
+class ProvenanceRester(BaseRester):
     suffix = "materials/provenance"
     document_model = ProvenanceDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/robocrys.py b/mp_api/client/routes/materials/robocrys.py
index bf24ccc65..e4a15a41c 100644
--- a/mp_api/client/routes/materials/robocrys.py
+++ b/mp_api/client/routes/materials/robocrys.py
@@ -6,7 +6,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class RobocrysRester(BaseRester[RobocrystallogapherDoc]):
+class RobocrysRester(BaseRester):
     suffix = "materials/robocrys"
     document_model = RobocrystallogapherDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/similarity.py b/mp_api/client/routes/materials/similarity.py
index c2ae9e999..cf1dc175e 100644
--- a/mp_api/client/routes/materials/similarity.py
+++ b/mp_api/client/routes/materials/similarity.py
@@ -6,7 +6,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class SimilarityRester(BaseRester[SimilarityDoc]):
+class SimilarityRester(BaseRester):
     suffix = "materials/similarity"
     document_model = SimilarityDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/substrates.py b/mp_api/client/routes/materials/substrates.py
index ac2ba6c8e..6c3f90d14 100644
--- a/mp_api/client/routes/materials/substrates.py
+++ b/mp_api/client/routes/materials/substrates.py
@@ -7,7 +7,7 @@
 from mp_api.client.core import BaseRester
 
 
-class SubstratesRester(BaseRester[SubstratesDoc]):
+class SubstratesRester(BaseRester):
     suffix = "materials/substrates"
     document_model = SubstratesDoc  # type: ignore
     primary_key = "film_id"
diff --git a/mp_api/client/routes/materials/summary.py b/mp_api/client/routes/materials/summary.py
index e04d71f3e..b90782d08 100644
--- a/mp_api/client/routes/materials/summary.py
+++ b/mp_api/client/routes/materials/summary.py
@@ -11,7 +11,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class SummaryRester(BaseRester[SummaryDoc]):
+class SummaryRester(BaseRester):
     suffix = "materials/summary"
     document_model = SummaryDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/surface_properties.py b/mp_api/client/routes/materials/surface_properties.py
index a3c92c247..8b9d53f63 100644
--- a/mp_api/client/routes/materials/surface_properties.py
+++ b/mp_api/client/routes/materials/surface_properties.py
@@ -8,7 +8,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class SurfacePropertiesRester(BaseRester[SurfacePropDoc]):
+class SurfacePropertiesRester(BaseRester):
     suffix = "materials/surface_properties"
     document_model = SurfacePropDoc  # type: ignore
     primary_key = "material_id"
diff --git a/mp_api/client/routes/materials/synthesis.py b/mp_api/client/routes/materials/synthesis.py
index 171f5e2b4..6788814ce 100644
--- a/mp_api/client/routes/materials/synthesis.py
+++ b/mp_api/client/routes/materials/synthesis.py
@@ -9,7 +9,7 @@
 from mp_api.client.core import BaseRester, MPRestError
 
 
-class SynthesisRester(BaseRester[SynthesisSearchResultModel]):
+class SynthesisRester(BaseRester):
     suffix = "materials/synthesis"
     document_model = SynthesisSearchResultModel  # type: ignore
 
diff --git a/mp_api/client/routes/materials/tasks.py b/mp_api/client/routes/materials/tasks.py
index 5e12f9aa1..c78650780 100644
--- a/mp_api/client/routes/materials/tasks.py
+++ b/mp_api/client/routes/materials/tasks.py
@@ -1,17 +1,21 @@
 from __future__ import annotations
 
 from datetime import datetime
+from typing import TYPE_CHECKING
 
-from emmet.core.tasks import TaskDoc
+from emmet.core.tasks import CoreTaskDoc
 
 from mp_api.client.core import BaseRester, MPRestError
 from mp_api.client.core.utils import validate_ids
 
+if TYPE_CHECKING:
+    from pydantic import BaseModel
 
-class TaskRester(BaseRester[TaskDoc]):
-    suffix = "materials/tasks"
-    document_model = TaskDoc  # type: ignore
-    primary_key = "task_id"
+
+class TaskRester(BaseRester):
+    suffix: str = "materials/tasks"
+    document_model: type[BaseModel] = CoreTaskDoc  # type: ignore
+    primary_key: str = "task_id"
 
     def get_trajectory(self, task_id):
         """Returns a Trajectory object containing the geometry of the
@@ -44,7 +48,7 @@ def search(
         chunk_size: int = 1000,
         all_fields: bool = True,
         fields: list[str] | None = None,
-    ) -> list[TaskDoc] | list[dict]:
+    ) -> list[CoreTaskDoc] | list[dict]:
         """Query core task docs using a variety of search criteria.
 
         Arguments:
@@ -58,11 +62,11 @@ def search(
             num_chunks (int): Maximum number of chunks of data to yield. None will yield all possible.
             chunk_size (int): Number of data entries per chunk. Max size is 100.
             all_fields (bool): Whether to return all fields in the document. Defaults to True.
-            fields (List[str]): List of fields in TaskDoc to return data for.
+            fields (List[str]): List of fields in CoreTaskDoc to return data for.
                 Default is material_id, last_updated, and formula_pretty if all_fields is False.
 
         Returns:
-            ([TaskDoc], [dict]) List of task documents or dictionaries.
+            ([CoreTaskDoc], [dict]) List of task documents or dictionaries.
         """
         query_params = {}  # type: dict
 
diff --git a/mp_api/client/routes/materials/thermo.py b/mp_api/client/routes/materials/thermo.py
index 509745efa..edf06dd8d 100644
--- a/mp_api/client/routes/materials/thermo.py
+++ b/mp_api/client/routes/materials/thermo.py
@@ -16,7 +16,7 @@
     from emmet.core.thermo import ThermoType
 
 
-class ThermoRester(BaseRester[ThermoDoc]):
+class ThermoRester(BaseRester):
     suffix = "materials/thermo"
     document_model = ThermoDoc  # type: ignore
     supports_versions = True
diff --git a/mp_api/client/routes/materials/xas.py b/mp_api/client/routes/materials/xas.py
index 1b2e28a60..99dae9c9e 100644
--- a/mp_api/client/routes/materials/xas.py
+++ b/mp_api/client/routes/materials/xas.py
@@ -22,7 +22,7 @@
         )
 
 
-class XASRester(BaseRester[XASDoc]):
+class XASRester(BaseRester):
     suffix = "materials/xas"
     document_model = XASDoc  # type: ignore
     primary_key = "spectrum_id"
diff --git a/mp_api/client/routes/molecules/bonds.py b/mp_api/client/routes/molecules/bonds.py
index 3ea6d79e7..96a1d0d1c 100644
--- a/mp_api/client/routes/molecules/bonds.py
+++ b/mp_api/client/routes/molecules/bonds.py
@@ -6,7 +6,7 @@
 from mp_api.client.core import BaseRester
 
 
-class MoleculesBondRester(BaseRester[MoleculeBondingDoc]):
+class MoleculesBondRester(BaseRester):
     suffix = "molecules/bonding"
     document_model = MoleculeBondingDoc
     primary_key = "property_id"
diff --git a/mp_api/client/routes/molecules/jcesr.py b/mp_api/client/routes/molecules/jcesr.py
index b8bdb2b4b..15216e44b 100644
--- a/mp_api/client/routes/molecules/jcesr.py
+++ b/mp_api/client/routes/molecules/jcesr.py
@@ -9,7 +9,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class JcesrMoleculesRester(BaseRester[MoleculesDoc]):
+class JcesrMoleculesRester(BaseRester):
     suffix = "molecules/jcesr"
     document_model = MoleculesDoc  # type: ignore
     primary_key = "task_id"
diff --git a/mp_api/client/routes/molecules/molecules.py b/mp_api/client/routes/molecules/molecules.py
index c278980ed..922f136ea 100644
--- a/mp_api/client/routes/molecules/molecules.py
+++ b/mp_api/client/routes/molecules/molecules.py
@@ -13,7 +13,7 @@
 _EMMET_SETTINGS = EmmetSettings()
 
 
-class BaseMoleculeRester(BaseRester[MoleculeDoc]):
+class BaseMoleculeRester(BaseRester):
     document_model = MoleculeDoc
     primary_key = "molecule_id"
 
diff --git a/mp_api/client/routes/molecules/orbitals.py b/mp_api/client/routes/molecules/orbitals.py
index 123b27d9d..9b93cab09 100644
--- a/mp_api/client/routes/molecules/orbitals.py
+++ b/mp_api/client/routes/molecules/orbitals.py
@@ -6,7 +6,7 @@
 from mp_api.client.core import BaseRester
 
 
-class MoleculesOrbitalsRester(BaseRester[OrbitalDoc]):
+class MoleculesOrbitalsRester(BaseRester):
     suffix = "molecules/orbitals"
     document_model = OrbitalDoc
     primary_key = "property_id"
diff --git a/mp_api/client/routes/molecules/partial_charges.py b/mp_api/client/routes/molecules/partial_charges.py
index 8f0d99b86..1c828c500 100644
--- a/mp_api/client/routes/molecules/partial_charges.py
+++ b/mp_api/client/routes/molecules/partial_charges.py
@@ -6,7 +6,7 @@
 from mp_api.client.core import BaseRester
 
 
-class MoleculesPartialChargesRester(BaseRester[PartialChargesDoc]):
+class MoleculesPartialChargesRester(BaseRester):
     suffix = "molecules/partial_charges"
     document_model = PartialChargesDoc
     primary_key = "property_id"
diff --git a/mp_api/client/routes/molecules/partial_spins.py b/mp_api/client/routes/molecules/partial_spins.py
index da290db38..a04504a5e 100644
--- a/mp_api/client/routes/molecules/partial_spins.py
+++ b/mp_api/client/routes/molecules/partial_spins.py
@@ -6,7 +6,7 @@
 from mp_api.client.core import BaseRester
 
 
-class MoleculesPartialSpinsRester(BaseRester[PartialSpinsDoc]):
+class MoleculesPartialSpinsRester(BaseRester):
     suffix = "molecules/partial_spins"
     document_model = PartialSpinsDoc
     primary_key = "property_id"
diff --git a/mp_api/client/routes/molecules/redox.py b/mp_api/client/routes/molecules/redox.py
index 8d6ebd5da..e41c2cda1 100644
--- a/mp_api/client/routes/molecules/redox.py
+++ b/mp_api/client/routes/molecules/redox.py
@@ -6,7 +6,7 @@
 from mp_api.client.core import BaseRester
 
 
-class MoleculesRedoxRester(BaseRester[RedoxDoc]):
+class MoleculesRedoxRester(BaseRester):
     suffix = "molecules/redox"
     document_model = RedoxDoc
     primary_key = "property_id"
diff --git a/mp_api/client/routes/molecules/summary.py b/mp_api/client/routes/molecules/summary.py
index 6e340476a..7cce3a974 100644
--- a/mp_api/client/routes/molecules/summary.py
+++ b/mp_api/client/routes/molecules/summary.py
@@ -8,7 +8,7 @@
 from mp_api.client.core import BaseRester
 
 
-class MoleculesSummaryRester(BaseRester[MoleculeSummaryDoc]):
+class MoleculesSummaryRester(BaseRester):
     suffix = "molecules/summary"
     document_model = MoleculeSummaryDoc  # type: ignore
     primary_key = "molecule_id"
diff --git a/mp_api/client/routes/molecules/tasks.py b/mp_api/client/routes/molecules/tasks.py
index 0969b3a05..02289aaca 100644
--- a/mp_api/client/routes/molecules/tasks.py
+++ b/mp_api/client/routes/molecules/tasks.py
@@ -6,7 +6,7 @@
 from mp_api.client.core.utils import validate_ids
 
 
-class MoleculesTaskRester(BaseRester[TaskDocument]):
+class MoleculesTaskRester(BaseRester):
     suffix = "molecules/tasks"
     document_model = TaskDocument
     primary_key = "task_id"
diff --git a/mp_api/client/routes/molecules/thermo.py b/mp_api/client/routes/molecules/thermo.py
index 6a2c59c2b..d2e1b0c1b 100644
--- a/mp_api/client/routes/molecules/thermo.py
+++ b/mp_api/client/routes/molecules/thermo.py
@@ -6,7 +6,7 @@
 from mp_api.client.core import BaseRester
 
 
-class MoleculesThermoRester(BaseRester[MoleculeThermoDoc]):
+class MoleculesThermoRester(BaseRester):
     suffix = "molecules/thermo"
     document_model = MoleculeThermoDoc
     primary_key = "property_id"
diff --git a/mp_api/client/routes/molecules/vibrations.py b/mp_api/client/routes/molecules/vibrations.py
index 6d6d1245a..146936a9c 100644
--- a/mp_api/client/routes/molecules/vibrations.py
+++ b/mp_api/client/routes/molecules/vibrations.py
@@ -6,7 +6,7 @@
 from mp_api.client.core import BaseRester
 
 
-class MoleculesVibrationRester(BaseRester[VibrationDoc]):
+class MoleculesVibrationRester(BaseRester):
     suffix = "molecules/vibrations"
     document_model = VibrationDoc
     primary_key = "property_id"
diff --git a/requirements/requirements-ubuntu-latest_py3.11.txt b/requirements/requirements-ubuntu-latest_py3.11.txt
index 0dd0b0eaf..cda326c08 100644
--- a/requirements/requirements-ubuntu-latest_py3.11.txt
+++ b/requirements/requirements-ubuntu-latest_py3.11.txt
@@ -83,7 +83,7 @@ plotly==6.3.1
     # via pymatgen
 pybtex==0.25.1
     # via emmet-core
-pydantic==2.12.2
+pydantic==2.12.3
     # via
     #   emmet-core
     #   pydantic-settings
diff --git a/requirements/requirements-ubuntu-latest_py3.11_extras.txt b/requirements/requirements-ubuntu-latest_py3.11_extras.txt
index 9fddc73be..dae1e91a1 100644
--- a/requirements/requirements-ubuntu-latest_py3.11_extras.txt
+++ b/requirements/requirements-ubuntu-latest_py3.11_extras.txt
@@ -280,7 +280,7 @@ pycodestyle==2.14.0
     # via
     #   flake8
     #   mp-api (pyproject.toml)
-pydantic==2.12.2
+pydantic==2.12.3
     # via
     #   emmet-core
     #   pydantic-settings
diff --git a/requirements/requirements-ubuntu-latest_py3.12.txt b/requirements/requirements-ubuntu-latest_py3.12.txt
index eb743970e..f12a31abd 100644
--- a/requirements/requirements-ubuntu-latest_py3.12.txt
+++ b/requirements/requirements-ubuntu-latest_py3.12.txt
@@ -83,7 +83,7 @@ plotly==6.3.1
     # via pymatgen
 pybtex==0.25.1
     # via emmet-core
-pydantic==2.12.2
+pydantic==2.12.3
     # via
     #   emmet-core
     #   pydantic-settings
diff --git a/requirements/requirements-ubuntu-latest_py3.12_extras.txt b/requirements/requirements-ubuntu-latest_py3.12_extras.txt
index 8863d5357..be9196f2b 100644
--- a/requirements/requirements-ubuntu-latest_py3.12_extras.txt
+++ b/requirements/requirements-ubuntu-latest_py3.12_extras.txt
@@ -280,7 +280,7 @@ pycodestyle==2.14.0
     # via
     #   flake8
     #   mp-api (pyproject.toml)
-pydantic==2.12.2
+pydantic==2.12.3
     # via
     #   emmet-core
     #   pydantic-settings