diff --git a/.generated-info b/.generated-info
index 126fda6a0b0a..dbb48bef672d 100644
--- a/.generated-info
+++ b/.generated-info
@@ -1,4 +1,4 @@
 {
-  "spec_repo_commit": "b75095c",
-  "generated": "2025-07-31 10:45:49.687"
+  "spec_repo_commit": "b14c9da",
+  "generated": "2025-07-31 15:31:39.889"
 }
diff --git a/.generator/schemas/v2/openapi.yaml b/.generator/schemas/v2/openapi.yaml
index b125b71c69d5..ab031f4a84e5 100644
--- a/.generator/schemas/v2/openapi.yaml
+++ b/.generator/schemas/v2/openapi.yaml
@@ -27480,6 +27480,16 @@ components:
       description: The `sample` processor allows probabilistic sampling of logs at
         a fixed rate.
       properties:
+        group_by:
+          description: Optional list of fields to group events by. Each group will
+            be sampled independently
+          example:
+          - service
+          - host
+          items:
+            type: string
+          minItems: 1
+          type: array
         id:
           description: The unique identifier for this component. Used to reference
             this component in other parts of the pipeline (for example, as the `input`
diff --git a/lib/datadog_api_client/v2/models/observability_pipeline_sample_processor.rb b/lib/datadog_api_client/v2/models/observability_pipeline_sample_processor.rb
index 32229c4bad55..0ccd32df2a9c 100644
--- a/lib/datadog_api_client/v2/models/observability_pipeline_sample_processor.rb
+++ b/lib/datadog_api_client/v2/models/observability_pipeline_sample_processor.rb
@@ -21,6 +21,9 @@ module DatadogAPIClient::V2
   class ObservabilityPipelineSampleProcessor
     include BaseGenericModel
 
+    # Optional list of fields to group events by. Each group will be sampled independently
+    attr_reader :group_by
+
     # The unique identifier for this component. Used to reference this component in other parts of the pipeline (for example, as the `input` to downstream components).
     attr_reader :id
 
@@ -45,6 +48,7 @@ class ObservabilityPipelineSampleProcessor
     # @!visibility private
     def self.attribute_map
       {
+        :'group_by' => :'group_by',
         :'id' => :'id',
         :'include' => :'include',
         :'inputs' => :'inputs',
@@ -58,6 +62,7 @@ def self.attribute_map
     # @!visibility private
     def self.openapi_types
       {
+        :'group_by' => :'Array<String>',
         :'id' => :'String',
         :'include' => :'String',
         :'inputs' => :'Array<String>',
@@ -85,6 +90,12 @@ def initialize(attributes = {})
         end
       }
 
+      if attributes.key?(:'group_by')
+        if (value = attributes[:'group_by']).is_a?(Array)
+          self.group_by = value
+        end
+      end
+
       if attributes.key?(:'id')
         self.id = attributes[:'id']
       end
@@ -116,6 +127,7 @@ def initialize(attributes = {})
     # @return true if the model is valid
     # @!visibility private
     def valid?
+      return false if !@group_by.nil? && @group_by.length < 1
       return false if @id.nil?
       return false if @include.nil?
       return false if @inputs.nil?
@@ -124,6 +136,16 @@ def valid?
       true
     end
 
+    # Custom attribute writer method with validation
+    # @param group_by [Object] Object to be assigned
+    # @!visibility private
+    def group_by=(group_by)
+      if !group_by.nil? && group_by.length < 1
+        fail ArgumentError, 'invalid value for "group_by", number of items must be greater than or equal to 1.'
+      end
+      @group_by = group_by
+    end
+
     # Custom attribute writer method with validation
     # @param id [Object] Object to be assigned
     # @!visibility private
@@ -200,6 +222,7 @@ def to_hash
     def ==(o)
       return true if self.equal?(o)
       self.class == o.class &&
+          group_by == o.group_by &&
           id == o.id &&
           include == o.include &&
           inputs == o.inputs &&
@@ -213,7 +236,7 @@ def ==(o)
     # @return [Integer] Hash code
     # @!visibility private
     def hash
-      [id, include, inputs, percentage, rate, type, additional_properties].hash
+      [group_by, id, include, inputs, percentage, rate, type, additional_properties].hash
     end
   end
 end