diff --git a/chargebee/main.py b/chargebee/main.py
index e1a941c..1de797d 100644
--- a/chargebee/main.py
+++ b/chargebee/main.py
@@ -142,6 +142,8 @@ def __init__(
         self.PersonalizedOffer = chargebee.PersonalizedOffer(self.env)
         self.Plan = chargebee.Plan(self.env)
         self.PortalSession = chargebee.PortalSession(self.env)
+        self.Preference = chargebee.Preference(self.env)
+        self.PreferenceDefinition = chargebee.PreferenceDefinition(self.env)
         self.PriceVariant = chargebee.PriceVariant(self.env)
         self.PricingPageSession = chargebee.PricingPageSession(self.env)
         self.PromotionalCredit = chargebee.PromotionalCredit(self.env)
diff --git a/chargebee/models/__init__.py b/chargebee/models/__init__.py
index fe5f2d6..5545cbe 100644
--- a/chargebee/models/__init__.py
+++ b/chargebee/models/__init__.py
@@ -1,4 +1,5 @@
 from chargebee.models.enums import (
+    AccessMode,
     AccountHolderType,
     AccountReceivablesHandling,
     AccountType,
@@ -54,6 +55,7 @@
     NotifyReferralSystem,
     OfflinePaymentMethod,
     OnEvent,
+    Operand,
     Operation,
     OperationType,
     PauseOption,
@@ -76,6 +78,7 @@
     RetryEngine,
     Role,
     ScheduleType,
+    SettingGroup,
     Source,
     Status,
     TaxExemptReason,
@@ -298,6 +301,10 @@
 
 from chargebee.models.portal_session.operations import PortalSession
 
+from chargebee.models.preference.operations import Preference
+
+from chargebee.models.preference_definition.operations import PreferenceDefinition
+
 from chargebee.models.price_variant.operations import PriceVariant
 
 from chargebee.models.pricing_page_session.operations import PricingPageSession
diff --git a/chargebee/models/enums.py b/chargebee/models/enums.py
index 3679ac4..0cc226a 100644
--- a/chargebee/models/enums.py
+++ b/chargebee/models/enums.py
@@ -1,6 +1,14 @@
 from enum import Enum
 
 
+class AccessMode(Enum):
+    READ_WRITE = "read_write"
+    READ_ONLY = "read_only"
+
+    def __str__(self):
+        return self.value
+
+
 class AccountHolderType(Enum):
     INDIVIDUAL = "individual"
     COMPANY = "company"
@@ -1266,6 +1274,13 @@ def __str__(self):
         return self.value
 
 
+class Operand(Enum):
+    REQUEST_SOURCE = "request_source"
+
+    def __str__(self):
+        return self.value
+
+
 class Operation(Enum):
     CREATE = "create"
     UPDATE = "update"
@@ -1598,6 +1613,15 @@ def __str__(self):
         return self.value
 
 
+class SettingGroup(Enum):
+    CONTRACT_TERMS = "contract_terms"
+    SUB_CANCELATION = "sub_cancelation"
+    BILLING_RULES = "billing_rules"
+
+    def __str__(self):
+        return self.value
+
+
 class Source(Enum):
     ADMIN_CONSOLE = "admin_console"
     API = "api"
diff --git a/chargebee/models/preference/__init__.py b/chargebee/models/preference/__init__.py
new file mode 100644
index 0000000..f08829a
--- /dev/null
+++ b/chargebee/models/preference/__init__.py
@@ -0,0 +1,2 @@
+from .operations import Preference
+from .responses import PreferenceResponse
diff --git a/chargebee/models/preference/operations.py b/chargebee/models/preference/operations.py
new file mode 100644
index 0000000..52cd224
--- /dev/null
+++ b/chargebee/models/preference/operations.py
@@ -0,0 +1,77 @@
+from .responses import *
+from chargebee import request, environment
+from typing import TypedDict, Required, NotRequired, Dict, List, Any, cast
+from chargebee.filters import Filters
+
+@dataclass
+class Preference:
+
+    env: environment.Environment
+
+    class Variant(TypedDict):
+        value: Required[str]
+        allow_override_in_interface: NotRequired[bool]
+        allow_override_in_api: NotRequired[bool]
+        criteria: NotRequired[List[Criteria]]
+
+    class UpsertPreferenceParams(TypedDict):
+        id: Required[str]
+        value: Required[str]
+        allow_override_in_interface: NotRequired[bool]
+        allow_override_in_api: NotRequired[bool]
+        variants: NotRequired[List[Dict[Any, Any]]]
+
+
+    class ListParams(TypedDict):
+        setting_group: Required[Filters.EnumFilter]
+
+    class UpsertParams(TypedDict):
+        preferences: NotRequired[List["Preference.UpsertPreferenceParams"]]
+
+    def list(self, params: ListParams, headers=None) -> ListResponse:
+        jsonKeys = {
+        
+        }
+        options = {
+        
+        }
+        return request.send_list_request(
+            "get",
+            request.uri_path("preferences"),
+            self.env,
+            cast(Dict[Any, Any], params),
+            headers,
+            ListResponse,
+            None,
+            False,
+            jsonKeys,
+            options,
+            resource="preference",
+            operation="list",
+        )
+
+    def upsert(self, params: UpsertParams, headers=None) -> UpsertResponse:
+        jsonKeys = {
+        
+            "variants": 1,
+        
+        }
+        options = {
+        
+            "isIdempotent": True,
+        
+        }
+        return request.send(
+            "post",
+            request.uri_path("preferences"),
+            self.env,
+            cast(Dict[Any, Any], params),
+            headers,
+            UpsertResponse,
+            None,
+            False,
+            jsonKeys,
+            options,
+            resource="preference",
+            operation="upsert",
+        )
\ No newline at end of file
diff --git a/chargebee/models/preference/responses.py b/chargebee/models/preference/responses.py
new file mode 100644
index 0000000..56c5529
--- /dev/null
+++ b/chargebee/models/preference/responses.py
@@ -0,0 +1,45 @@
+from dataclasses import dataclass
+from chargebee.model import Model
+from typing import Dict, List, Any
+from chargebee.response import Response
+
+@dataclass
+class Criteria(Model):
+    raw_data: Dict[Any, Any] = None
+    operand: str = None
+    operator: str = None
+    values: List[str] = None
+
+
+@dataclass
+class VariantResponse(Model):
+    raw_data: Dict[Any, Any] = None
+    value: str = None
+    allow_override_in_interface: bool = None
+    allow_override_in_api: bool = None
+    criteria: List[Criteria] = None
+
+
+@dataclass
+class PreferenceResponse(Model):
+    raw_data: Dict[Any, Any] = None
+    id: str = None
+    setting_group: str = None
+    value: str = None
+    allow_override_in_interface: bool = None
+    allow_override_in_api: bool = None
+    variants: List[VariantResponse] = None
+    created_at: int = None
+    updated_at: int = None
+
+
+@dataclass
+class ListResponse(Response):
+
+    preference: PreferenceResponse
+
+@dataclass
+class UpsertResponse(Response):
+    is_idempotency_replayed: bool
+    preference: PreferenceResponse
+
diff --git a/chargebee/models/preference_definition/__init__.py b/chargebee/models/preference_definition/__init__.py
new file mode 100644
index 0000000..5cb8dae
--- /dev/null
+++ b/chargebee/models/preference_definition/__init__.py
@@ -0,0 +1,2 @@
+from .operations import PreferenceDefinition
+from .responses import PreferenceDefinitionResponse
diff --git a/chargebee/models/preference_definition/operations.py b/chargebee/models/preference_definition/operations.py
new file mode 100644
index 0000000..349ff2c
--- /dev/null
+++ b/chargebee/models/preference_definition/operations.py
@@ -0,0 +1,67 @@
+from .responses import *
+from chargebee import request, environment
+from typing import TypedDict, Required, NotRequired, Dict, List, Any, cast
+from enum import Enum
+from chargebee.filters import Filters
+from chargebee.models import enums
+
+@dataclass
+class PreferenceDefinition:
+
+    env: environment.Environment
+    class ApplicabilityOperator(Enum):
+        AND = "and"
+        OR = "or"
+
+        def __str__(self):
+            return self.value
+
+    class Operator(Enum):
+        IS = "is"
+        IN = "in"
+
+        def __str__(self):
+            return self.value
+    class VariantCriteriaAllowedOperator(Enum):
+        IS = "is"
+        IN = "in"
+
+        def __str__(self):
+            return self.value
+
+    class Applicability(TypedDict):
+        setting: NotRequired[str]
+        operator: NotRequired["PreferenceDefinition.Operator"]
+        values: NotRequired[List[str]]
+
+    class VariantCriteria(TypedDict):
+        operand: NotRequired[enums.Operand]
+        allowed_operator: NotRequired["PreferenceDefinition.VariantCriteriaAllowedOperator"]
+        value_schema: NotRequired[ValueSchema]
+
+
+
+    class ListDefinitionsParams(TypedDict):
+        setting_group: Required[Filters.EnumFilter]
+
+    def list_definitions(self, params: ListDefinitionsParams, headers=None) -> ListDefinitionsResponse:
+        jsonKeys = {
+        
+        }
+        options = {
+        
+        }
+        return request.send(
+            "get",
+            request.uri_path("preferences", "definitions"),
+            self.env,
+            cast(Dict[Any, Any], params),
+            headers,
+            ListDefinitionsResponse,
+            None,
+            False,
+            jsonKeys,
+            options,
+            resource="preferenceDefinition",
+            operation="listDefinitions",
+        )
\ No newline at end of file
diff --git a/chargebee/models/preference_definition/responses.py b/chargebee/models/preference_definition/responses.py
new file mode 100644
index 0000000..f84a306
--- /dev/null
+++ b/chargebee/models/preference_definition/responses.py
@@ -0,0 +1,74 @@
+from dataclasses import dataclass
+from chargebee.model import Model
+from typing import Dict, List, Any
+from chargebee.response import Response
+
+@dataclass
+class AllowedValueResponse(Model):
+    raw_data: Dict[Any, Any] = None
+    value: str = None
+    description: str = None
+
+
+@dataclass
+class ValueSchemaItemsResponse(Model):
+    raw_data: Dict[Any, Any] = None
+    type: str = None
+    allowed_values: List[AllowedValueResponse] = None
+
+
+@dataclass
+class ValueSchema(Model):
+    raw_data: Dict[Any, Any] = None
+    type: str = None
+    min_value: int = None
+    max_value: int = None
+    max_chars: int = None
+    allowed_values: List[AllowedValueResponse] = None
+    items: ValueSchemaItemsResponse = None
+
+
+ValueSchemaResponse = ValueSchema
+
+
+@dataclass
+class ApplicabilityResponse(Model):
+    raw_data: Dict[Any, Any] = None
+    setting: str = None
+    operator: str = None
+    values: List[str] = None
+
+
+@dataclass
+class VariantCriteriaResponse(Model):
+    raw_data: Dict[Any, Any] = None
+    operand: str = None
+    allowed_operator: str = None
+    value_schema: ValueSchema = None
+
+
+@dataclass
+class PreferenceDefinitionResponse(Model):
+    raw_data: Dict[Any, Any] = None
+    id: str = None
+    setting_group: str = None
+    main_group: str = None
+    sub_group: str = None
+    description: str = None
+    doc_link: str = None
+    access_mode: str = None
+    overridable_in_interface: bool = None
+    overridable_in_api: bool = None
+    applicability_operator: str = None
+    is_namespace: bool = None
+    key_internal_name: str = None
+    applicability: List[ApplicabilityResponse] = None
+    value_schema: ValueSchemaResponse = None
+    variant_criteria: List[VariantCriteriaResponse] = None
+
+
+@dataclass
+class ListDefinitionsResponse(Response):
+
+    preference_definition: PreferenceDefinitionResponse
+