feat(llm): configure GPT-5.6 reasoning defaults

spec/controllers/api/v1/accounts/captain/preferences_controller_spec.rb

@@ -44,10 +44,12 @@ RSpec.describe 'Api::V1::Accounts::Captain::Preferences', type: :request do
         expect(json_response).to have_key(:providers)
         expect(json_response).to have_key(:models)
         expect(json_response).to have_key(:features)
+        expect(json_response[:models].keys).to include(:'gpt-5.6-luna', :'gpt-5.6-terra', :'gpt-5.6-sol')
+        expect(json_response.dig(:features, :assistant, :models).pluck(:id)).to include('gpt-5.6-luna', 'gpt-5.6-terra', 'gpt-5.6-sol')
       end
 
       it 'returns effective model provider and source for each feature' do
-        account.update!(captain_models: { 'editor' => 'gpt-4.1' })
+        account.update!(captain_models: { 'editor' => 'gpt-5.6-terra' })
 
         get "/api/v1/accounts/#{account.id}/captain/preferences",
             headers: admin.create_new_auth_token,
@@ -55,15 +57,17 @@ RSpec.describe 'Api::V1::Accounts::Captain::Preferences', type: :request do
 
         expect(response).to have_http_status(:success)
         expect(json_response.dig(:features, :editor)).to include(
-          model: 'gpt-4.1',
-          selected: 'gpt-4.1',
+          model: 'gpt-5.6-terra',
+          selected: 'gpt-5.6-terra',
           provider: 'openai',
+          reasoning_effort: 'low',
           source: 'account_override'
         )
         expect(json_response.dig(:features, :label_suggestion)).to include(
           model: Llm::Models.default_model_for('label_suggestion'),
           selected: Llm::Models.default_model_for('label_suggestion'),
           provider: 'openai',
+          reasoning_effort: 'low',
           source: 'default'
         )
       end
@@ -81,7 +85,7 @@ RSpec.describe 'Api::V1::Accounts::Captain::Preferences', type: :request do
         )
       end
 
-      it 'returns GPT-5.2 as the assistant default for V2 accounts' do
+      it 'returns the Captain V2 assistant default for V2 accounts' do
         account.enable_features!('captain_integration_v2')
 
         get "/api/v1/accounts/#{account.id}/captain/preferences",

spec/enterprise/models/account_spec.rb

@@ -258,7 +258,7 @@ RSpec.describe Account, type: :model do
 
       expect(account).to be_feature_enabled('captain_integration')
       expect(account).to be_feature_enabled('captain_integration_v2')
-      expect(account.captain_preferences[:models]['assistant']).to eq('gpt-5.2')
+      expect(account.captain_preferences[:models]['assistant']).to eq(Llm::FeatureRouter::CAPTAIN_V2_ASSISTANT_MODEL)
       expect(account.captain_models).to be_nil
     end
 

spec/enterprise/models/concerns/agentable_spec.rb

@@ -183,7 +183,7 @@ RSpec.describe Concerns::Agentable do
       create(:installation_config, name: 'CAPTAIN_OPEN_AI_MODEL', value: 'gpt-4.1-nano')
       account.enable_features!('captain_integration_v2')
 
-      expect(dummy_instance.send(:agent_model)).to eq('gpt-5.2')
+      expect(dummy_instance.send(:agent_model)).to eq(Llm::FeatureRouter::CAPTAIN_V2_ASSISTANT_MODEL)
       expect(account.reload.captain_models).to be_nil
     end
 

spec/enterprise/services/llm/base_ai_service_spec.rb

@@ -34,7 +34,7 @@ RSpec.describe Llm::BaseAiService do
       create(:installation_config, name: 'CAPTAIN_OPEN_AI_MODEL', value: 'gpt-4.1-nano')
       account.enable_features!('captain_integration_v2')
 
-      expect(described_class.new(feature: 'assistant', account: account).model).to eq('gpt-5.2')
+      expect(described_class.new(feature: 'assistant', account: account).model).to eq(Llm::FeatureRouter::CAPTAIN_V2_ASSISTANT_MODEL)
       expect(account.reload.captain_models).to be_nil
     end
 

spec/lib/llm/feature_router_spec.rb

@@ -12,25 +12,27 @@ RSpec.describe Llm::FeatureRouter do
       expect(resolved).to eq(
         feature: 'editor',
         provider: 'openai',
-        model: 'gpt-4.1-mini',
+        model: 'gpt-5.6-luna',
+        reasoning_effort: 'low',
         source: :default
       )
     end
 
     it 'uses a valid account model override' do
-      account.update!(captain_models: { 'editor' => 'gpt-4.1' })
+      account.update!(captain_models: { 'editor' => 'gpt-5.6-terra' })
 
       resolved = described_class.resolve(feature: 'editor', account: account)
 
       expect(resolved).to include(
         feature: 'editor',
         provider: 'openai',
-        model: 'gpt-4.1',
+        model: 'gpt-5.6-terra',
+        reasoning_effort: 'low',
         source: :account_override
       )
     end
 
-    it 'resolves GPT-5.2 as the assistant default when Captain V2 is enabled without storing an account override' do
+    it 'resolves the Captain V2 assistant default without storing an account override' do
       account.enable_features!('captain_integration_v2')
 
       resolved = described_class.resolve(feature: 'assistant', account: account)
@@ -38,7 +40,8 @@ RSpec.describe Llm::FeatureRouter do
       expect(resolved).to include(
         feature: 'assistant',
         provider: 'openai',
-        model: 'gpt-5.2',
+        model: described_class::CAPTAIN_V2_ASSISTANT_MODEL,
+        reasoning_effort: 'medium',
         source: :default
       )
       expect(account.reload.captain_models).to be_nil
@@ -62,7 +65,8 @@ RSpec.describe Llm::FeatureRouter do
       resolved = described_class.resolve(feature: 'editor', account: account)
 
       expect(resolved).to include(
-        model: 'gpt-4.1-mini',
+        model: 'gpt-5.6-luna',
+        reasoning_effort: 'low',
         source: :default
       )
     end
@@ -73,7 +77,8 @@ RSpec.describe Llm::FeatureRouter do
       resolved = described_class.resolve(feature: 'editor', account: account)
 
       expect(resolved).to include(
-        model: 'gpt-4.1-mini',
+        model: 'gpt-5.6-luna',
+        reasoning_effort: 'low',
         source: :default
       )
     end

spec/lib/llm/models_spec.rb

@@ -27,12 +27,33 @@ RSpec.describe Llm::Models do
     end
 
     it 'routes document and conversation FAQ generation independently' do
-      expect(described_class.default_model_for('document_faq_generation')).to eq('gpt-4.1-mini')
-      expect(described_class.default_model_for('conversation_faq_generation')).to eq('gpt-5.2')
+      expect(described_class.default_model_for('document_faq_generation')).to eq('gpt-5.6-terra')
+      expect(described_class.default_model_for('conversation_faq_generation')).to eq('gpt-5.6-terra')
+    end
+
+    it 'sets reasoning effort for every text generation feature' do
+      features_without_reasoning = %w[audio_transcription help_center_search]
+
+      described_class.features.each_key do |feature_key|
+        if features_without_reasoning.include?(feature_key)
+          expect(described_class.reasoning_effort_for(feature_key)).to be_nil
+        else
+          expect(described_class.reasoning_effort_for(feature_key)).to be_present
+        end
+      end
+    end
+
+    it 'exposes GPT-5.6 models for Captain V2 workflows without changing the legacy PDF path' do
+      expect(described_class.models_for('assistant')).to include('gpt-5.6-luna', 'gpt-5.6-terra', 'gpt-5.6-sol')
+      expect(described_class.models_for('pdf_faq_generation')).not_to include('gpt-5.6-luna', 'gpt-5.6-terra', 'gpt-5.6-sol')
     end
   end
 
   describe '.models' do
+    it 'includes the GPT-5.6 model family' do
+      expect(described_class.models.keys).to include('gpt-5.6-luna', 'gpt-5.6-terra', 'gpt-5.6-sol')
+    end
+
     it 'references existing providers from every model' do
       missing_providers = described_class.models.filter_map do |model_name, config|
         provider = config['provider']
@@ -49,7 +70,9 @@ RSpec.describe Llm::Models do
     it 'returns model metadata for a feature' do
       config = described_class.feature_config('editor')
 
-      expect(config[:default]).to eq('gpt-4.1-mini')
+      expect(config[:default]).to eq('gpt-5.6-luna')
+      expect(config[:reasoning_effort]).to eq('low')
+      expect(config[:models].pluck(:id)).to include('gpt-5.6-luna', 'gpt-5.6-terra')
       expect(config[:models].first).to include(
         id: 'gpt-4.1-mini',
         display_name: 'GPT-4.1 Mini',

spec/models/account_spec.rb

@@ -393,10 +393,10 @@ RSpec.describe Account do
         end
       end
 
-      it 'returns GPT-5.2 for assistant when Captain V2 is enabled' do
+      it 'returns the Captain V2 default for assistant when Captain V2 is enabled' do
         account.enable_features!('captain_integration_v2')
 
-        expect(account.captain_preferences[:models]['assistant']).to eq('gpt-5.2')
+        expect(account.captain_preferences[:models]['assistant']).to eq(Llm::FeatureRouter::CAPTAIN_V2_ASSISTANT_MODEL)
         expect(account.reload.captain_models).to be_nil
       end
     end