diff --git a/elasticsearch-api/lib/elasticsearch/api/actions/inference/inference.rb b/elasticsearch-api/lib/elasticsearch/api/actions/inference/inference.rb
new file mode 100644
index 0000000000..5d0c86c617
--- /dev/null
+++ b/elasticsearch-api/lib/elasticsearch/api/actions/inference/inference.rb
@@ -0,0 +1,72 @@
+# Licensed to Elasticsearch B.V. under one or more contributor
+# license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright
+# ownership. Elasticsearch B.V. licenses this file to you under
+# the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+# This code was automatically generated from the Elasticsearch Specification
+# See https://github.com/elastic/elasticsearch-specification
+# See Elasticsearch::ES_SPECIFICATION_COMMIT for commit hash.
+module Elasticsearch
+  module API
+    module Inference
+      module Actions
+        # Perform inference on the service.
+        # This API enables you to use machine learning models to perform specific tasks on data that you provide as an input.
+        # It returns a response with the results of the tasks.
+        # The inference endpoint you use can perform one specific task that has been defined when the endpoint was created with the create inference API.
+        #
+        # @option arguments [String] :task_type The type of inference task that the model performs.
+        # @option arguments [String] :inference_id The unique identifier for the inference endpoint. (*Required*)
+        # @option arguments [Time] :timeout The amount of time to wait for the inference request to complete. Server default: 30s.
+        # @option arguments [Hash] :headers Custom HTTP headers
+        # @option arguments [Hash] :body request body
+        #
+        # @see https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-inference-inference
+        #
+        def inference(arguments = {})
+          request_opts = { endpoint: arguments[:endpoint] || 'inference.inference' }
+
+          defined_params = [:inference_id, :task_type].each_with_object({}) do |variable, set_variables|
+            set_variables[variable] = arguments[variable] if arguments.key?(variable)
+          end
+          request_opts[:defined_params] = defined_params unless defined_params.empty?
+
+          raise ArgumentError, "Required argument 'inference_id' missing" unless arguments[:inference_id]
+
+          arguments = arguments.clone
+          headers = arguments.delete(:headers) || {}
+
+          body = arguments.delete(:body)
+
+          _task_type = arguments.delete(:task_type)
+
+          _inference_id = arguments.delete(:inference_id)
+
+          method = Elasticsearch::API::HTTP_POST
+          path   = if _task_type && _inference_id
+                     "_inference/#{Utils.listify(_task_type)}/#{Utils.listify(_inference_id)}"
+                   else
+                     "_inference/#{Utils.listify(_inference_id)}"
+                   end
+          params = Utils.process_params(arguments)
+
+          Elasticsearch::API::Response.new(
+            perform_request(method, path, params, body, headers, request_opts)
+          )
+        end
+      end
+    end
+  end
+end
diff --git a/elasticsearch-api/lib/elasticsearch/api/version.rb b/elasticsearch-api/lib/elasticsearch/api/version.rb
index 4aba4e6dbe..ea92083ae0 100644
--- a/elasticsearch-api/lib/elasticsearch/api/version.rb
+++ b/elasticsearch-api/lib/elasticsearch/api/version.rb
@@ -18,6 +18,6 @@
 module Elasticsearch
   module API
     VERSION = '9.0.0'.freeze
-    ES_SPECIFICATION_COMMIT = '60a81659be928bfe6cec53708c7f7613555a5eaf'.freeze
+    ES_SPECIFICATION_COMMIT = 'f2651fcb540f55100a80629192c021fd2e7a019c'.freeze
   end
 end
diff --git a/elasticsearch-api/spec/unit/actions/inference/inference_spec.rb b/elasticsearch-api/spec/unit/actions/inference/inference_spec.rb
new file mode 100644
index 0000000000..dfa2a51890
--- /dev/null
+++ b/elasticsearch-api/spec/unit/actions/inference/inference_spec.rb
@@ -0,0 +1,36 @@
+# Licensed to Elasticsearch B.V. under one or more contributor
+# license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright
+# ownership. Elasticsearch B.V. licenses this file to you under
+# the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+require 'spec_helper'
+
+describe 'client#inference.inference' do
+  let(:expected_args) do
+    [
+      'POST',
+      '_inference/bar',
+      {},
+      nil,
+      {},
+      { defined_params: { inference_id: 'bar' },
+        endpoint: 'inference.inference' }
+    ]
+  end
+
+  it 'performs the request' do
+    expect(client_double.inference.inference(inference_id: 'bar')).to be_a Elasticsearch::API::Response
+  end
+end