api_nodes: added prices for gpt-5 series models (#4958)

Author: bigcat88

src/composables/node/useNodePricing.ts

@@ -1362,6 +1362,12 @@ const apiNodeCosts: Record<string, { displayPrice: string | PricingFunction }> =
           return '$0.0004/$0.0016 per 1K tokens'
         } else if (model.includes('gpt-4.1')) {
           return '$0.002/$0.008 per 1K tokens'
+        } else if (model.includes('gpt-5-nano')) {
+          return '$0.00005/$0.0004 per 1K tokens'
+        } else if (model.includes('gpt-5-mini')) {
+          return '$0.00025/$0.002 per 1K tokens'
+        } else if (model.includes('gpt-5')) {
+          return '$0.00125/$0.01 per 1K tokens'
         }
         return 'Token-based'
       }

tests-ui/tests/composables/node/useNodePricing.test.ts

@@ -1512,7 +1512,10 @@ describe('useNodePricing', () => {
           { model: 'gpt-4o', expected: '$0.0025/$0.01 per 1K tokens' },
           { model: 'gpt-4.1-nano', expected: '$0.0001/$0.0004 per 1K tokens' },
           { model: 'gpt-4.1-mini', expected: '$0.0004/$0.0016 per 1K tokens' },
-          { model: 'gpt-4.1', expected: '$0.002/$0.008 per 1K tokens' }
+          { model: 'gpt-4.1', expected: '$0.002/$0.008 per 1K tokens' },
+          { model: 'gpt-5-nano', expected: '$0.00005/$0.0004 per 1K tokens' },
+          { model: 'gpt-5-mini', expected: '$0.00025/$0.002 per 1K tokens' },
+          { model: 'gpt-5', expected: '$0.00125/$0.01 per 1K tokens' }
         ]
 
         testCases.forEach(({ model, expected }) => {