diff --git a/src/backend/src/services/ai/image/providers/GeminiImageGenerationProvider/models.ts b/src/backend/src/services/ai/image/providers/GeminiImageGenerationProvider/models.ts
index de209b009..a452ee02e 100644
--- a/src/backend/src/services/ai/image/providers/GeminiImageGenerationProvider/models.ts
+++ b/src/backend/src/services/ai/image/providers/GeminiImageGenerationProvider/models.ts
@@ -28,7 +28,7 @@ export const GEMINI_IMAGE_GENERATION_MODELS: IImageModel[] = [
         name: 'Gemini 2.5 Flash Image',
         version: '1.0',
         costs_currency: 'usd-cents',
-        index_cost_key: '1024x1024',
+        index_cost_key: '1x1',
         allowedQualityLevels: [''],
         costs: {
             '1x1': 3.9, // $0.039 per image
@@ -60,7 +60,7 @@ export const GEMINI_IMAGE_GENERATION_MODELS: IImageModel[] = [
         name: 'Gemini 3 Pro Image',
         version: '1.0',
         costs_currency: 'usd-cents',
-        index_cost_key: '1024x1024',
+        index_cost_key: '1K:1x1',
         aliases: ['gemini-3-pro-image-preview'],
         allowedQualityLevels: ['1K', '2K', '4K'],
         allowedRatios: [