feat(api-nodes-pricing): add prices for Flux2ProImageNode (#6921)

## Summary

Price badges for comfyanonymous/ComfyUI#10880

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6921-feat-api-nodes-pricing-add-prices-for-Flux2ProImageNode-2b66d73d365081f2b269c77df7ef93d6)
by [Unito](https://www.unito.io)

Author: bigcat88

src/composables/node/useNodePricing.ts

@@ -303,6 +303,46 @@ const apiNodeCosts: Record<string, { displayPrice: string | PricingFunction }> =
     FluxProKontextMaxNode: {
       displayPrice: '$0.08/Run'
     },
+    Flux2ProImageNode: {
+      displayPrice: (node: LGraphNode): string => {
+        const widthW = node.widgets?.find(
+          (w) => w.name === 'width'
+        ) as IComboWidget
+        const heightW = node.widgets?.find(
+          (w) => w.name === 'height'
+        ) as IComboWidget
+
+        const w = Number(widthW?.value)
+        const h = Number(heightW?.value)
+        if (!Number.isFinite(w) || !Number.isFinite(h) || w <= 0 || h <= 0) {
+          // global min/max for this node given schema bounds (1MP..4MP output)
+          return '$0.03–$0.15/Run'
+        }
+
+        // Is the 'images' input connected?
+        const imagesInput = node.inputs?.find(
+          (i) => i.name === 'images'
+        ) as INodeInputSlot
+        const hasRefs =
+          typeof imagesInput?.link !== 'undefined' && imagesInput.link != null
+
+        // Output cost: ceil((w*h)/MP); first MP $0.03, each additional $0.015
+        const MP = 1024 * 1024
+        const outMP = Math.max(1, Math.floor((w * h + MP - 1) / MP))
+        const outputCost = 0.03 + 0.015 * Math.max(outMP - 1, 0)
+
+        if (hasRefs) {
+          // Unknown ref count/size on the frontend:
+          // min extra is $0.015, max extra is $0.120 (8 MP cap / 8 refs)
+          const minTotal = outputCost + 0.015
+          const maxTotal = outputCost + 0.12
+          return `~$${parseFloat(minTotal.toFixed(3))}–$${parseFloat(maxTotal.toFixed(3))}/Run`
+        }
+
+        // Precise text-to-image price
+        return `$${parseFloat(outputCost.toFixed(3))}/Run`
+      }
+    },
     OpenAIVideoSora2: {
       displayPrice: sora2PricingCalculator
     },
@@ -1809,6 +1849,7 @@ export const useNodePricing = () => {
       IdeogramV3: ['rendering_speed', 'num_images', 'character_image'],
       FluxProKontextProNode: [],
       FluxProKontextMaxNode: [],
+      Flux2ProImageNode: ['width', 'height', 'images'],
       VeoVideoGenerationNode: ['duration_seconds'],
       Veo3VideoGenerationNode: ['model', 'generate_audio'],
       LumaVideoNode: ['model', 'resolution', 'duration'],

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

@@ -94,6 +94,42 @@ describe('useNodePricing', () => {
     })
   })
 
+  describe('dynamic pricing - Flux2ProImageNode', () => {
+    it('should return precise price for text-to-image 1024x1024 (no refs)', () => {
+      const { getNodeDisplayPrice } = useNodePricing()
+      const node = createMockNode('Flux2ProImageNode', [
+        { name: 'width', value: 1024 },
+        { name: 'height', value: 1024 }
+      ])
+
+      // 1024x1024 => 1 MP => $0.03
+      expect(getNodeDisplayPrice(node)).toBe('$0.03/Run')
+    })
+
+    it('should return minimum estimate when refs are connected (1024x1024)', () => {
+      const { getNodeDisplayPrice } = useNodePricing()
+      const node = createMockNode(
+        'Flux2ProImageNode',
+        [
+          { name: 'width', value: 1024 },
+          { name: 'height', value: 1024 }
+        ],
+        true,
+        // connect the 'images' input
+        [{ name: 'images', connected: true }]
+      )
+
+      // 1024x1024 => 1 MP output = $0.03, min input add = $0.015 => ~$0.045 min
+      expect(getNodeDisplayPrice(node)).toBe('~$0.045–$0.15/Run')
+    })
+
+    it('should show fallback when width/height are missing', () => {
+      const { getNodeDisplayPrice } = useNodePricing()
+      const node = createMockNode('Flux2ProImageNode', [])
+      expect(getNodeDisplayPrice(node)).toBe('$0.03–$0.15/Run')
+    })
+  })
+
   describe('dynamic pricing - KlingTextToVideoNode', () => {
     it('should return high price for kling-v2-1-master model', () => {
       const { getNodeDisplayPrice } = useNodePricing()