Fix models listing to restrict to some models

Author: oxaroky02

lib/ruby_llm/providers/azure_openai/models.rb

@@ -7,11 +7,26 @@ module AzureOpenAI
       module Models
         extend OpenAI::Models
 
+        KNOWN_MODELS = [
+          'gpt-4o'
+        ].freeze
+
         module_function
 
         def models_url
           'models?api-version=2024-10-21'
         end
+
+        def parse_list_models_response(response, slug, capabilities)
+          # select the known models only since this list from Azure OpenAI is
+          # very long
+          response.body['data'].select! do |m|
+            KNOWN_MODELS.include?(m['id'])
+          end
+          # Use the OpenAI processor for the list, keeping in mind that pricing etc
+          # won't be correct
+          super
+        end
       end
     end
   end