diff --git a/ee/app/helpers/ee/application_settings_helper.rb b/ee/app/helpers/ee/application_settings_helper.rb
index faa63c87fe00672ea896aa0687d455c1103e4f07..3867744e9983534c10e6cb5456921f8077fa6a5a 100644
--- a/ee/app/helpers/ee/application_settings_helper.rb
+++ b/ee/app/helpers/ee/application_settings_helper.rb
@@ -68,7 +68,6 @@ def visible_attributes
         :product_analytics_configurator_connection_string,
         :cube_api_base_url,
         :cube_api_key,
-        :openai_api_key,
         :security_policy_global_group_approvers_enabled,
         :security_approval_policies_limit,
         :anthropic_api_key,
diff --git a/ee/lib/ee/api/helpers/settings_helpers.rb b/ee/lib/ee/api/helpers/settings_helpers.rb
index 3ccf4b0e349cbe0c7b4fdd46a013651be5a79e31..52adeb136ff6e9b67b17af2ef9f5471bc0522999 100644
--- a/ee/lib/ee/api/helpers/settings_helpers.rb
+++ b/ee/lib/ee/api/helpers/settings_helpers.rb
@@ -62,7 +62,6 @@ module SettingsHelpers
             optional :git_rate_limit_users_allowlist, type: Array[String], coerce_with: ::API::Validations::Types::CommaSeparatedToArray.coerce, desc: 'List of usernames excluded from Git anti-abuse rate limits'
             optional :git_rate_limit_users_alertlist, type: Array[Integer], desc: 'List of user ids who will be emailed when Git abuse rate limit is exceeded'
             optional :auto_ban_user_on_excessive_projects_download, type: Grape::API::Boolean, desc: 'Ban users from the application when they exceed maximum number of unique projects download in the specified time period'
-            optional :openai_api_key, type: String, desc: "OpenAI API key"
             optional :anthropic_api_key, type: String, desc: "Anthropic API key"
             optional :make_profile_private, type: Grape::API::Boolean, desc: 'Flag indicating if users are permitted to make their profiles private'
             optional :service_access_tokens_expiration_enforced, type: Grape::API::Boolean, desc: "To enforce token expiration for Service accounts users"
diff --git a/ee/lib/gitlab/llm/open_ai/workhorse.rb b/ee/lib/gitlab/llm/open_ai/workhorse.rb
deleted file mode 100644
index 5994f87f46ce8378a5307d132900a273623a616e..0000000000000000000000000000000000000000
--- a/ee/lib/gitlab/llm/open_ai/workhorse.rb
+++ /dev/null
@@ -1,26 +0,0 @@
-# frozen_string_literal: true
-
-module Gitlab
-  module Llm
-    module OpenAi
-      class Workhorse
-        OPEN_AI_API_URL = "https://api.openai.com/v1"
-        CHAT_URL = "#{OPEN_AI_API_URL}/chat/completions".freeze
-
-        class << self
-          def default_headers
-            {
-              'Authorization' => ["Bearer #{::Gitlab::CurrentSettings.openai_api_key}"],
-              'Content-Type' => ['application/json']
-            }
-          end
-
-          def chat_response(options:)
-            Gitlab::Workhorse.send_url(CHAT_URL,
-              body: options.to_json, headers: default_headers, method: "POST")
-          end
-        end
-      end
-    end
-  end
-end
diff --git a/ee/spec/helpers/ee/application_settings_helper_spec.rb b/ee/spec/helpers/ee/application_settings_helper_spec.rb
index 0594c57d80b0be6eba673db0c5d2f74fd2cb7b15..04010b0e004815ab7f0c0df79e5b3270bf018e80 100644
--- a/ee/spec/helpers/ee/application_settings_helper_spec.rb
+++ b/ee/spec/helpers/ee/application_settings_helper_spec.rb
@@ -8,10 +8,6 @@
       expect(visible_attributes).to include(*%i[max_personal_access_token_lifetime])
     end
 
-    it 'contains openai_api_key value' do
-      expect(visible_attributes).to include(*%i[openai_api_key])
-    end
-
     it 'contains anthropic_api_key value' do
       expect(visible_attributes).to include(*%i[anthropic_api_key])
     end
diff --git a/ee/spec/requests/api/settings_spec.rb b/ee/spec/requests/api/settings_spec.rb
index a83d9f5f1ac4994d5758288570d7ed0c2c9ff02f..4c7ef8feff19b3a3aceaf44889035477f68b8e9c 100644
--- a/ee/spec/requests/api/settings_spec.rb
+++ b/ee/spec/requests/api/settings_spec.rb
@@ -168,15 +168,6 @@
       end
     end
 
-    context 'openai api key setting' do
-      it 'updates openai_api_key' do
-        put api('/application/settings', admin, admin_mode: true), params: { openai_api_key: 'OPENAI_API_KEY' }
-
-        expect(response).to have_gitlab_http_status(:ok)
-        expect(json_response['openai_api_key']).to eq('OPENAI_API_KEY')
-      end
-    end
-
     context 'anthropic api key setting' do
       it 'updates anthropic_api_key' do
         put api('/application/settings', admin, admin_mode: true), params: { anthropic_api_key: 'ANTHROPIC_API_KEY' }