feat: nano banana pro model (#13641)

Author: katiemn

genai/image_generation/imggen_mmflash_edit_img_with_txt_img.py

@@ -26,7 +26,7 @@ def generate_content() -> str:
     image = Image.open("test_resources/example-image-eiffel-tower.png")
 
     response = client.models.generate_content(
-        model="gemini-2.5-flash-image",
+        model="gemini-3-pro-image-preview",
         contents=[image, "Edit this image to make it look like a cartoon."],
         config=GenerateContentConfig(response_modalities=[Modality.TEXT, Modality.IMAGE]),
     )
@@ -36,12 +36,7 @@ def generate_content() -> str:
         elif part.inline_data:
             image = Image.open(BytesIO((part.inline_data.data)))
             image.save("output_folder/bw-example-image.png")
-    # Example response:
-    #  Here's the cartoon-style edit of the image:
-    #  Cartoon-style edit:
-    #  - Simplified the Eiffel Tower with bolder lines and slightly exaggerated proportions.
-    #  - Brightened and saturated the colors of the sky, fireworks, and foliage for a more vibrant, cartoonish look.
-    #  ....
+
     # [END googlegenaisdk_imggen_mmflash_edit_img_with_txt_img]
     return "output_folder/bw-example-image.png"
 

genai/image_generation/imggen_mmflash_txt_and_img_with_txt.py

@@ -23,7 +23,7 @@ def generate_content() -> int:
     client = genai.Client()
 
     response = client.models.generate_content(
-        model="gemini-2.5-flash-image",
+        model="gemini-3-pro-image-preview",
         contents=(
             "Generate an illustrated recipe for a paella."
             "Create images to go alongside the text as you generate the recipe"
@@ -38,9 +38,7 @@ def generate_content() -> int:
                 image = Image.open(BytesIO((part.inline_data.data)))
                 image.save(f"output_folder/example-image-{i+1}.png")
                 fp.write(f"![image](example-image-{i+1}.png)")
-    # Example response:
-    #  A markdown page for a Paella recipe(`paella-recipe.md`) has been generated.
-    #   It includes detailed steps and several images illustrating the cooking process.
+
     # [END googlegenaisdk_imggen_mmflash_txt_and_img_with_txt]
     return True
 

genai/image_generation/imggen_mmflash_with_txt.py

@@ -23,16 +23,10 @@ def generate_content() -> str:
     client = genai.Client()
 
     response = client.models.generate_content(
-        model="gemini-2.5-flash-image",
+        model="gemini-3-pro-image-preview",
         contents=("Generate an image of the Eiffel tower with fireworks in the background."),
         config=GenerateContentConfig(
             response_modalities=[Modality.TEXT, Modality.IMAGE],
-            candidate_count=1,
-            safety_settings=[
-                {"method": "PROBABILITY"},
-                {"category": "HARM_CATEGORY_DANGEROUS_CONTENT"},
-                {"threshold": "BLOCK_MEDIUM_AND_ABOVE"},
-            ],
         ),
     )
     for part in response.candidates[0].content.parts:
@@ -41,11 +35,7 @@ def generate_content() -> str:
         elif part.inline_data:
             image = Image.open(BytesIO((part.inline_data.data)))
             image.save("output_folder/example-image-eiffel-tower.png")
-    # Example response:
-    #   I will generate an image of the Eiffel Tower at night, with a vibrant display of
-    #   colorful fireworks exploding in the dark sky behind it. The tower will be
-    #   illuminated, standing tall as the focal point of the scene, with the bursts of
-    #   light from the fireworks creating a festive atmosphere.
+
     # [END googlegenaisdk_imggen_mmflash_with_txt]
     return True