diff --git a/.generator/schemas/v2/openapi.yaml b/.generator/schemas/v2/openapi.yaml
index 3bd4dc4902..c5944e1249 100644
--- a/.generator/schemas/v2/openapi.yaml
+++ b/.generator/schemas/v2/openapi.yaml
@@ -18525,6 +18525,45 @@ components:
       x-enum-varnames:
         - "TRUE"
         - "FALSE"
+    CostTagMetadataMonth:
+      description: A month that has Cloud Cost Management tag metadata available for a given provider.
+      properties:
+        id:
+          description: The month, in `YYYY-MM` format.
+          example: "2026-04"
+          type: string
+        type:
+          $ref: "#/components/schemas/CostTagMetadataMonthType"
+      required:
+        - id
+        - type
+      type: object
+    CostTagMetadataMonthType:
+      default: cost_tag_metadata_month
+      description: Type of the Cloud Cost Management tag metadata month resource.
+      enum:
+        - cost_tag_metadata_month
+      example: cost_tag_metadata_month
+      type: string
+      x-enum-varnames:
+        - COST_TAG_METADATA_MONTH
+    CostTagMetadataMonthsResponse:
+      description: List of months that have Cloud Cost Management tag metadata for the requested provider, ordered most-recent first and capped at 36 months.
+      example:
+        data:
+          - id: "2026-04"
+            type: cost_tag_metadata_month
+          - id: "2026-03"
+            type: cost_tag_metadata_month
+      properties:
+        data:
+          description: List of months that have tag metadata available.
+          items:
+            $ref: "#/components/schemas/CostTagMetadataMonth"
+          type: array
+      required:
+        - data
+      type: object
     CostTagType:
       default: cost_tag
       description: Type of the Cloud Cost Management tag resource.
@@ -109019,6 +109058,68 @@ paths:
       x-unstable: |-
         **Note**: This endpoint is in preview and is subject to change.
         If you have any feedback, contact [Datadog support](https://docs.datadoghq.com/help/).
+  /api/v2/cost/tag_metadata/months:
+    get:
+      description: |-
+        List months that have Cloud Cost Management tag metadata for a given provider,
+        ordered most-recent first. The response is capped at 36 months.
+      operationId: ListCostTagMetadataMonths
+      parameters:
+        - description: |-
+            Provider to scope the query to. Use the value of the `providername` tag in CCM
+            (for example, `aws`, `azure`, `gcp`, `Oracle`, `Confluent Cloud`, `Snowflake`).
+            For costs uploaded through the Custom Costs API, use `custom`.
+            Values are case-sensitive.
+          example: aws
+          in: query
+          name: filter[provider]
+          required: true
+          schema:
+            type: string
+      responses:
+        "200":
+          content:
+            application/json:
+              examples:
+                default:
+                  value:
+                    data:
+                      - id: "2026-04"
+                        type: cost_tag_metadata_month
+                      - id: "2026-03"
+                        type: cost_tag_metadata_month
+              schema:
+                $ref: "#/components/schemas/CostTagMetadataMonthsResponse"
+          description: OK
+        "400":
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/APIErrorResponse"
+          description: Bad Request
+        "403":
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/APIErrorResponse"
+          description: Forbidden
+        "429":
+          $ref: "#/components/responses/TooManyRequestsResponse"
+      security:
+        - apiKeyAuth: []
+          appKeyAuth: []
+        - AuthZ:
+            - cloud_cost_management_read
+      summary: List Cloud Cost Management tag metadata months
+      tags:
+        - Cloud Cost Management
+      "x-permission":
+        operator: OR
+        permissions:
+          - cloud_cost_management_read
+      x-unstable: |-
+        **Note**: This endpoint is in preview and is subject to change.
+        If you have any feedback, contact [Datadog support](https://docs.datadoghq.com/help/).
   /api/v2/cost/tag_metadata/orchestrators:
     get:
       description: List container orchestrators (for example, `kubernetes`, `ecs`) detected in Cloud Cost Management data for the requested period.
diff --git a/docs/datadog_api_client.v2.model.rst b/docs/datadog_api_client.v2.model.rst
index 8ebe6f4853..1da1a45806 100644
--- a/docs/datadog_api_client.v2.model.rst
+++ b/docs/datadog_api_client.v2.model.rst
@@ -7389,6 +7389,27 @@ datadog\_api\_client.v2.model.cost\_tag\_metadata\_daily\_filter module
    :members:
    :show-inheritance:
 
+datadog\_api\_client.v2.model.cost\_tag\_metadata\_month module
+---------------------------------------------------------------
+
+.. automodule:: datadog_api_client.v2.model.cost_tag_metadata_month
+   :members:
+   :show-inheritance:
+
+datadog\_api\_client.v2.model.cost\_tag\_metadata\_month\_type module
+---------------------------------------------------------------------
+
+.. automodule:: datadog_api_client.v2.model.cost_tag_metadata_month_type
+   :members:
+   :show-inheritance:
+
+datadog\_api\_client.v2.model.cost\_tag\_metadata\_months\_response module
+--------------------------------------------------------------------------
+
+.. automodule:: datadog_api_client.v2.model.cost_tag_metadata_months_response
+   :members:
+   :show-inheritance:
+
 datadog\_api\_client.v2.model.cost\_tag\_type module
 ----------------------------------------------------
 
diff --git a/examples/v2/cloud-cost-management/ListCostTagMetadataMonths.py b/examples/v2/cloud-cost-management/ListCostTagMetadataMonths.py
new file mode 100644
index 0000000000..1937d1692f
--- /dev/null
+++ b/examples/v2/cloud-cost-management/ListCostTagMetadataMonths.py
@@ -0,0 +1,16 @@
+"""
+List Cloud Cost Management tag metadata months returns "OK" response
+"""
+
+from datadog_api_client import ApiClient, Configuration
+from datadog_api_client.v2.api.cloud_cost_management_api import CloudCostManagementApi
+
+configuration = Configuration()
+configuration.unstable_operations["list_cost_tag_metadata_months"] = True
+with ApiClient(configuration) as api_client:
+    api_instance = CloudCostManagementApi(api_client)
+    response = api_instance.list_cost_tag_metadata_months(
+        filter_provider="filter[provider]",
+    )
+
+    print(response)
diff --git a/src/datadog_api_client/configuration.py b/src/datadog_api_client/configuration.py
index 87ed78f81a..cbddc4a653 100644
--- a/src/datadog_api_client/configuration.py
+++ b/src/datadog_api_client/configuration.py
@@ -430,6 +430,7 @@ def __init__(
                 "v2.list_cost_tag_key_sources": False,
                 "v2.list_cost_tag_metadata": False,
                 "v2.list_cost_tag_metadata_metrics": False,
+                "v2.list_cost_tag_metadata_months": False,
                 "v2.list_cost_tag_metadata_orchestrators": False,
                 "v2.search_cost_recommendations": False,
                 "v2.create_dashboard_secure_embed": False,
diff --git a/src/datadog_api_client/v2/api/cloud_cost_management_api.py b/src/datadog_api_client/v2/api/cloud_cost_management_api.py
index 654644f9dd..87248097b9 100644
--- a/src/datadog_api_client/v2/api/cloud_cost_management_api.py
+++ b/src/datadog_api_client/v2/api/cloud_cost_management_api.py
@@ -65,6 +65,7 @@
 from datadog_api_client.v2.model.cost_tag_metadata_daily_filter import CostTagMetadataDailyFilter
 from datadog_api_client.v2.model.cost_currency_response import CostCurrencyResponse
 from datadog_api_client.v2.model.cost_metrics_response import CostMetricsResponse
+from datadog_api_client.v2.model.cost_tag_metadata_months_response import CostTagMetadataMonthsResponse
 from datadog_api_client.v2.model.cost_orchestrators_response import CostOrchestratorsResponse
 from datadog_api_client.v2.model.cost_tag_key_sources_response import CostTagKeySourcesResponse
 from datadog_api_client.v2.model.cost_tags_response import CostTagsResponse
@@ -1282,6 +1283,29 @@ def __init__(self, api_client=None):
             api_client=api_client,
         )
 
+        self._list_cost_tag_metadata_months_endpoint = _Endpoint(
+            settings={
+                "response_type": (CostTagMetadataMonthsResponse,),
+                "auth": ["apiKeyAuth", "appKeyAuth", "AuthZ"],
+                "endpoint_path": "/api/v2/cost/tag_metadata/months",
+                "operation_id": "list_cost_tag_metadata_months",
+                "http_method": "GET",
+                "version": "v2",
+            },
+            params_map={
+                "filter_provider": {
+                    "required": True,
+                    "openapi_types": (str,),
+                    "attribute": "filter[provider]",
+                    "location": "query",
+                },
+            },
+            headers_map={
+                "accept": ["application/json"],
+            },
+            api_client=api_client,
+        )
+
         self._list_cost_tag_metadata_orchestrators_endpoint = _Endpoint(
             settings={
                 "response_type": (CostOrchestratorsResponse,),
@@ -2772,6 +2796,27 @@ def list_cost_tag_metadata_metrics(
 
         return self._list_cost_tag_metadata_metrics_endpoint.call_with_http_info(**kwargs)
 
+    def list_cost_tag_metadata_months(
+        self,
+        filter_provider: str,
+    ) -> CostTagMetadataMonthsResponse:
+        """List Cloud Cost Management tag metadata months.
+
+        List months that have Cloud Cost Management tag metadata for a given provider,
+        ordered most-recent first. The response is capped at 36 months.
+
+        :param filter_provider: Provider to scope the query to. Use the value of the ``providername`` tag in CCM
+            (for example, ``aws`` , ``azure`` , ``gcp`` , ``Oracle`` , ``Confluent Cloud`` , ``Snowflake`` ).
+            For costs uploaded through the Custom Costs API, use ``custom``.
+            Values are case-sensitive.
+        :type filter_provider: str
+        :rtype: CostTagMetadataMonthsResponse
+        """
+        kwargs: Dict[str, Any] = {}
+        kwargs["filter_provider"] = filter_provider
+
+        return self._list_cost_tag_metadata_months_endpoint.call_with_http_info(**kwargs)
+
     def list_cost_tag_metadata_orchestrators(
         self,
         filter_month: str,
diff --git a/src/datadog_api_client/v2/model/cost_tag_metadata_month.py b/src/datadog_api_client/v2/model/cost_tag_metadata_month.py
new file mode 100644
index 0000000000..4289c4ec43
--- /dev/null
+++ b/src/datadog_api_client/v2/model/cost_tag_metadata_month.py
@@ -0,0 +1,46 @@
+# Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+# This product includes software developed at Datadog (https://www.datadoghq.com/).
+# Copyright 2019-Present Datadog, Inc.
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from datadog_api_client.model_utils import (
+    ModelNormal,
+    cached_property,
+)
+
+
+if TYPE_CHECKING:
+    from datadog_api_client.v2.model.cost_tag_metadata_month_type import CostTagMetadataMonthType
+
+
+class CostTagMetadataMonth(ModelNormal):
+    @cached_property
+    def openapi_types(_):
+        from datadog_api_client.v2.model.cost_tag_metadata_month_type import CostTagMetadataMonthType
+
+        return {
+            "id": (str,),
+            "type": (CostTagMetadataMonthType,),
+        }
+
+    attribute_map = {
+        "id": "id",
+        "type": "type",
+    }
+
+    def __init__(self_, id: str, type: CostTagMetadataMonthType, **kwargs):
+        """
+        A month that has Cloud Cost Management tag metadata available for a given provider.
+
+        :param id: The month, in ``YYYY-MM`` format.
+        :type id: str
+
+        :param type: Type of the Cloud Cost Management tag metadata month resource.
+        :type type: CostTagMetadataMonthType
+        """
+        super().__init__(kwargs)
+
+        self_.id = id
+        self_.type = type
diff --git a/src/datadog_api_client/v2/model/cost_tag_metadata_month_type.py b/src/datadog_api_client/v2/model/cost_tag_metadata_month_type.py
new file mode 100644
index 0000000000..3389c4d686
--- /dev/null
+++ b/src/datadog_api_client/v2/model/cost_tag_metadata_month_type.py
@@ -0,0 +1,35 @@
+# Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+# This product includes software developed at Datadog (https://www.datadoghq.com/).
+# Copyright 2019-Present Datadog, Inc.
+from __future__ import annotations
+
+
+from datadog_api_client.model_utils import (
+    ModelSimple,
+    cached_property,
+)
+
+from typing import ClassVar
+
+
+class CostTagMetadataMonthType(ModelSimple):
+    """
+    Type of the Cloud Cost Management tag metadata month resource.
+
+    :param value: If omitted defaults to "cost_tag_metadata_month". Must be one of ["cost_tag_metadata_month"].
+    :type value: str
+    """
+
+    allowed_values = {
+        "cost_tag_metadata_month",
+    }
+    COST_TAG_METADATA_MONTH: ClassVar["CostTagMetadataMonthType"]
+
+    @cached_property
+    def openapi_types(_):
+        return {
+            "value": (str,),
+        }
+
+
+CostTagMetadataMonthType.COST_TAG_METADATA_MONTH = CostTagMetadataMonthType("cost_tag_metadata_month")
diff --git a/src/datadog_api_client/v2/model/cost_tag_metadata_months_response.py b/src/datadog_api_client/v2/model/cost_tag_metadata_months_response.py
new file mode 100644
index 0000000000..a1a70c72ce
--- /dev/null
+++ b/src/datadog_api_client/v2/model/cost_tag_metadata_months_response.py
@@ -0,0 +1,40 @@
+# Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+# This product includes software developed at Datadog (https://www.datadoghq.com/).
+# Copyright 2019-Present Datadog, Inc.
+from __future__ import annotations
+
+from typing import List, TYPE_CHECKING
+
+from datadog_api_client.model_utils import (
+    ModelNormal,
+    cached_property,
+)
+
+
+if TYPE_CHECKING:
+    from datadog_api_client.v2.model.cost_tag_metadata_month import CostTagMetadataMonth
+
+
+class CostTagMetadataMonthsResponse(ModelNormal):
+    @cached_property
+    def openapi_types(_):
+        from datadog_api_client.v2.model.cost_tag_metadata_month import CostTagMetadataMonth
+
+        return {
+            "data": ([CostTagMetadataMonth],),
+        }
+
+    attribute_map = {
+        "data": "data",
+    }
+
+    def __init__(self_, data: List[CostTagMetadataMonth], **kwargs):
+        """
+        List of months that have Cloud Cost Management tag metadata for the requested provider, ordered most-recent first and capped at 36 months.
+
+        :param data: List of months that have tag metadata available.
+        :type data: [CostTagMetadataMonth]
+        """
+        super().__init__(kwargs)
+
+        self_.data = data
diff --git a/src/datadog_api_client/v2/models/__init__.py b/src/datadog_api_client/v2/models/__init__.py
index 304ac498cc..074fdd6826 100644
--- a/src/datadog_api_client/v2/models/__init__.py
+++ b/src/datadog_api_client/v2/models/__init__.py
@@ -1349,6 +1349,9 @@
 from datadog_api_client.v2.model.cost_tag_key_type import CostTagKeyType
 from datadog_api_client.v2.model.cost_tag_keys_response import CostTagKeysResponse
 from datadog_api_client.v2.model.cost_tag_metadata_daily_filter import CostTagMetadataDailyFilter
+from datadog_api_client.v2.model.cost_tag_metadata_month import CostTagMetadataMonth
+from datadog_api_client.v2.model.cost_tag_metadata_month_type import CostTagMetadataMonthType
+from datadog_api_client.v2.model.cost_tag_metadata_months_response import CostTagMetadataMonthsResponse
 from datadog_api_client.v2.model.cost_tag_type import CostTagType
 from datadog_api_client.v2.model.cost_tags_response import CostTagsResponse
 from datadog_api_client.v2.model.coverage_summary_attributes import CoverageSummaryAttributes
@@ -9288,6 +9291,9 @@
     "CostTagKeyType",
     "CostTagKeysResponse",
     "CostTagMetadataDailyFilter",
+    "CostTagMetadataMonth",
+    "CostTagMetadataMonthType",
+    "CostTagMetadataMonthsResponse",
     "CostTagType",
     "CostTagsResponse",
     "CoverageSummaryAttributes",
diff --git a/tests/v2/features/cloud_cost_management.feature b/tests/v2/features/cloud_cost_management.feature
index 17779e4599..b41928f4cb 100644
--- a/tests/v2/features/cloud_cost_management.feature
+++ b/tests/v2/features/cloud_cost_management.feature
@@ -606,6 +606,22 @@ Feature: Cloud Cost Management
     When the request is sent
     Then the response status is 200 OK
 
+  @generated @skip @team:DataDog/cloud-cost-management
+  Scenario: List Cloud Cost Management tag metadata months returns "Bad Request" response
+    Given operation "ListCostTagMetadataMonths" enabled
+    And new "ListCostTagMetadataMonths" request
+    And request contains "filter[provider]" parameter from "REPLACE.ME"
+    When the request is sent
+    Then the response status is 400 Bad Request
+
+  @generated @skip @team:DataDog/cloud-cost-management
+  Scenario: List Cloud Cost Management tag metadata months returns "OK" response
+    Given operation "ListCostTagMetadataMonths" enabled
+    And new "ListCostTagMetadataMonths" request
+    And request contains "filter[provider]" parameter from "REPLACE.ME"
+    When the request is sent
+    Then the response status is 200 OK
+
   @generated @skip @team:DataDog/cloud-cost-management
   Scenario: List Cloud Cost Management tag sources returns "Bad Request" response
     Given operation "ListCostTagKeySources" enabled
diff --git a/tests/v2/features/undo.json b/tests/v2/features/undo.json
index c22b147298..7e0e3ceeb3 100644
--- a/tests/v2/features/undo.json
+++ b/tests/v2/features/undo.json
@@ -1898,6 +1898,12 @@
       "type": "safe"
     }
   },
+  "ListCostTagMetadataMonths": {
+    "tag": "Cloud Cost Management",
+    "undo": {
+      "type": "safe"
+    }
+  },
   "ListCostTagMetadataOrchestrators": {
     "tag": "Cloud Cost Management",
     "undo": {