fix: correct Seedance 2.0 and Nano Banana 2 API parameter schemas

- Seedance 2.0 T2V/I2V: expand aspect_ratio enum (add 4:3, 3:4, 21:9,
  adaptive), add 480p resolution, change duration default from 8 to 5
- Seedance 2.0 Fast T2V/I2V: same aspect_ratio fix, add 480p but remove
  1080p (unsupported), change duration default from 8 to 5
- Nano Banana 2: expand aspect_ratio enum to full set (15 values),
  remove invalid 512 resolution, add output_format parameter (jpg/png)
- Fix Nano Banana 2 pageUrl to match actual docs path (nanobanana2)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/api/generate/providers/kie.ts

@@ -105,7 +105,7 @@ export function getKieModelDefaults(modelId: string): Record<string, unknown> {
       return {
         aspect_ratio: "16:9",
         resolution: "720p",
-        duration: 8,
+        duration: 5,
         generate_audio: true,
         web_search: false,
       };

src/app/api/models/[modelId]/route.ts

@@ -750,8 +750,9 @@ function getKieSchema(modelId: string): ExtractedSchema {
     },
     "nano-banana-2": {
       parameters: [
-        { name: "aspect_ratio", type: "string", description: "Output aspect ratio", enum: ["1:1", "2:3", "3:2", "4:3", "16:9", "9:16", "21:9", "auto"], default: "auto" },
+        { name: "aspect_ratio", type: "string", description: "Output aspect ratio", enum: ["1:1", "1:4", "1:8", "2:3", "3:2", "3:4", "4:1", "4:3", "4:5", "5:4", "8:1", "9:16", "16:9", "21:9", "auto"], default: "auto" },
-        { name: "resolution", type: "string", description: "Output resolution", enum: ["512", "1K", "2K", "4K"], default: "1K" },
+        { name: "resolution", type: "string", description: "Output resolution", enum: ["1K", "2K", "4K"], default: "1K" },
+        { name: "output_format", type: "string", description: "Output image format", enum: ["jpg", "png"], default: "jpg" },
       ],
       inputs: [
         { name: "prompt", type: "text", required: true, label: "Prompt" },
@@ -860,9 +861,9 @@ function getKieSchema(modelId: string): ExtractedSchema {
     // ============ Video models ============
     "bytedance/seedance-2/text-to-video": {
       parameters: [
-        { name: "aspect_ratio", type: "string", description: "Output aspect ratio", enum: ["16:9", "9:16", "1:1"], default: "16:9" },
+        { name: "aspect_ratio", type: "string", description: "Output aspect ratio", enum: ["1:1", "4:3", "3:4", "16:9", "9:16", "21:9", "adaptive"], default: "16:9" },
-        { name: "resolution", type: "string", description: "Output resolution", enum: ["720p", "1080p"], default: "720p" },
+        { name: "resolution", type: "string", description: "Output resolution", enum: ["480p", "720p", "1080p"], default: "720p" },
-        { name: "duration", type: "integer", description: "Video duration in seconds (4-15)", default: 8, minimum: 4, maximum: 15 },
+        { name: "duration", type: "integer", description: "Video duration in seconds (4-15)", default: 5, minimum: 4, maximum: 15 },
         { name: "generate_audio", type: "boolean", description: "Generate audio with the video", default: true },
         { name: "web_search", type: "boolean", description: "Enable web search for prompt enhancement", default: false },
         { name: "seed", type: "integer", description: "Random seed for reproducibility", minimum: 0 },
@@ -871,9 +872,9 @@ function getKieSchema(modelId: string): ExtractedSchema {
     },
     "bytedance/seedance-2/image-to-video": {
       parameters: [
-        { name: "aspect_ratio", type: "string", description: "Output aspect ratio", enum: ["16:9", "9:16", "1:1"], default: "16:9" },
+        { name: "aspect_ratio", type: "string", description: "Output aspect ratio", enum: ["1:1", "4:3", "3:4", "16:9", "9:16", "21:9", "adaptive"], default: "16:9" },
-        { name: "resolution", type: "string", description: "Output resolution", enum: ["720p", "1080p"], default: "720p" },
+        { name: "resolution", type: "string", description: "Output resolution", enum: ["480p", "720p", "1080p"], default: "720p" },
-        { name: "duration", type: "integer", description: "Video duration in seconds (4-15)", default: 8, minimum: 4, maximum: 15 },
+        { name: "duration", type: "integer", description: "Video duration in seconds (4-15)", default: 5, minimum: 4, maximum: 15 },
         { name: "generate_audio", type: "boolean", description: "Generate audio with the video", default: true },
         { name: "web_search", type: "boolean", description: "Enable web search for prompt enhancement", default: false },
         { name: "seed", type: "integer", description: "Random seed for reproducibility", minimum: 0 },
@@ -885,9 +886,9 @@ function getKieSchema(modelId: string): ExtractedSchema {
     },
     "bytedance/seedance-2-fast/text-to-video": {
       parameters: [
-        { name: "aspect_ratio", type: "string", description: "Output aspect ratio", enum: ["16:9", "9:16", "1:1"], default: "16:9" },
+        { name: "aspect_ratio", type: "string", description: "Output aspect ratio", enum: ["1:1", "4:3", "3:4", "16:9", "9:16", "21:9", "adaptive"], default: "16:9" },
-        { name: "resolution", type: "string", description: "Output resolution", enum: ["720p", "1080p"], default: "720p" },
+        { name: "resolution", type: "string", description: "Output resolution", enum: ["480p", "720p"], default: "720p" },
-        { name: "duration", type: "integer", description: "Video duration in seconds (4-15)", default: 8, minimum: 4, maximum: 15 },
+        { name: "duration", type: "integer", description: "Video duration in seconds (4-15)", default: 5, minimum: 4, maximum: 15 },
         { name: "generate_audio", type: "boolean", description: "Generate audio with the video", default: true },
         { name: "web_search", type: "boolean", description: "Enable web search for prompt enhancement", default: false },
         { name: "seed", type: "integer", description: "Random seed for reproducibility", minimum: 0 },
@@ -896,9 +897,9 @@ function getKieSchema(modelId: string): ExtractedSchema {
     },
     "bytedance/seedance-2-fast/image-to-video": {
       parameters: [
-        { name: "aspect_ratio", type: "string", description: "Output aspect ratio", enum: ["16:9", "9:16", "1:1"], default: "16:9" },
+        { name: "aspect_ratio", type: "string", description: "Output aspect ratio", enum: ["1:1", "4:3", "3:4", "16:9", "9:16", "21:9", "adaptive"], default: "16:9" },
-        { name: "resolution", type: "string", description: "Output resolution", enum: ["720p", "1080p"], default: "720p" },
+        { name: "resolution", type: "string", description: "Output resolution", enum: ["480p", "720p"], default: "720p" },
-        { name: "duration", type: "integer", description: "Video duration in seconds (4-15)", default: 8, minimum: 4, maximum: 15 },
+        { name: "duration", type: "integer", description: "Video duration in seconds (4-15)", default: 5, minimum: 4, maximum: 15 },
         { name: "generate_audio", type: "boolean", description: "Generate audio with the video", default: true },
         { name: "web_search", type: "boolean", description: "Enable web search for prompt enhancement", default: false },
         { name: "seed", type: "integer", description: "Random seed for reproducibility", minimum: 0 },

src/app/api/models/route.ts

@@ -162,7 +162,7 @@ const KIE_MODELS: ProviderModel[] = [
     provider: "kie",
     capabilities: ["text-to-image", "image-to-image"],
     coverImage: undefined,
-    pageUrl: "https://docs.kie.ai/market/google/nano-banana-2",
+    pageUrl: "https://docs.kie.ai/market/google/nanobanana2",
   },
   {
     id: "google/imagen4",