add Image Ultra API

__init__.py

@@ -1,4 +1,4 @@
-from .stability_api import StabilityConservativeUpscale, StabilityCreativeUpscale, StabilityRemoveBackground, StabilityInpainting, StabilityErase, StabilityCore, StabilitySearchAndReplace, StabilityOutpainting, StabilitySD3, StabilityControlSketch, StabilityControlStructure
+from .stability_api import StabilityConservativeUpscale, StabilityCreativeUpscale, StabilityRemoveBackground, StabilityInpainting, StabilityErase, StabilityCore, StabilityImageUltra, StabilitySearchAndReplace, StabilityOutpainting, StabilitySD3, StabilityControlSketch, StabilityControlStructure
 
 NODE_CLASS_MAPPINGS = {
     "Stability Conservative Upscale": StabilityConservativeUpscale,
@@ -7,6 +7,7 @@ NODE_CLASS_MAPPINGS = {
     "Stability Erase": StabilityErase,
     "Stability Inpainting": StabilityInpainting,
     "Stability Image Core": StabilityCore,
+    "Stability Image Ultra": StabilityImageUltra,
     "Stability Search and Replace": StabilitySearchAndReplace,
     "Stability Outpainting": StabilityOutpainting,
     "Stability SD3": StabilitySD3,

stability_api.py

@@ -161,6 +161,23 @@ class StabilityCore(StabilityBase):
     }
 
 
+class StabilityImageUltra(StabilityBase):
+    API_ENDPOINT = "stable-image/generate/ultra"
+    ACCEPT = "image/*"
+    INPUT_SPEC = {
+        "required": {
+            "prompt": ("STRING", {"multiline": True}),
+        },
+        "optional": {
+            "negative_prompt": ("STRING", {"multiline": True}),
+            "seed": ("INT", {"default": 0, "min": 0, "max": 4294967294}),
+            "aspect_ratio": (["16:9", "1:1", "21:9", "2:3", "3:2", "4:5", "5:4", "9:16", "9:21"],),
+            "output_format": (["png", "jpeg"],),
+            "api_key_override": ("STRING", {"multiline": False}),
+        },
+    }
+
+
 class StabilityConservativeUpscale(StabilityBase):
     API_ENDPOINT = "stable-image/upscale/conservative"
     ACCEPT = "image/*"