diff --git a/lib/llm/config_service.rb b/lib/llm/config_service.rb
new file mode 100644
index 000000000..932e8a756
--- /dev/null
+++ b/lib/llm/config_service.rb
@@ -0,0 +1,95 @@
+# frozen_string_literal: true
+
+module Llm::ConfigService
+  CONFIG_PATH = Rails.root.join('config/llm.yml').freeze
+
+  class << self
+    def config
+      @config ||= load_config
+    end
+
+    def reload!
+      @config = load_config
+    end
+
+    def providers
+      config['providers'] || {}
+    end
+
+    def models
+      config['models'] || {}
+    end
+
+    def features
+      config['features'] || {}
+    end
+
+    def models_for_feature(feature_key)
+      feature = features[feature_key.to_s]
+      return [] unless feature
+
+      feature['models'] || []
+    end
+
+    def default_model_for_feature(feature_key)
+      feature = features[feature_key.to_s]
+      return nil unless feature
+
+      feature['default']
+    end
+
+    def model_info(model_name)
+      models[model_name.to_s]
+    end
+
+    def provider_info(provider_name)
+      providers[provider_name.to_s]
+    end
+
+    def feature_keys
+      features.keys
+    end
+
+    def valid_model_for_feature?(feature_key, model_name)
+      allowed_models = models_for_feature(feature_key)
+      allowed_models.include?(model_name.to_s)
+    end
+
+    def feature_config(feature_key)
+      feature = features[feature_key.to_s]
+      return nil unless feature
+
+      {
+        models: feature['models'].map do |model_name|
+          model = models[model_name]
+          next nil unless model
+
+          {
+            id: model_name,
+            display_name: model['display_name'],
+            provider: model['provider'],
+            credit_multiplier: model['credit_multiplier']
+          }
+        end.compact,
+        default: feature['default']
+      }
+    end
+
+    def all_features_config
+      features.keys.index_with do |feature_key|
+        feature_config(feature_key)
+      end
+    end
+
+    private
+
+    def load_config
+      return {} unless File.exist?(CONFIG_PATH)
+
+      YAML.load_file(CONFIG_PATH) || {}
+    rescue StandardError => e
+      Rails.logger.error("Failed to load LLM config: #{e.message}")
+      {}
+    end
+  end
+end