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OpenRouter 生图模型 API 文档 ​

google/gemini-2.5-flash-image ​

模型ID：google/gemini-2.5-flash-image

文档链接：https://openrouter.ai/google/gemini-2.5-flash-image/api

参考代码：

py
from openai import OpenAI

client = OpenAI(
  base_url="https://openrouter.ai/api/v1",
  api_key="<OPENROUTER_API_KEY>",
)

completion = client.chat.completions.create(
  extra_headers={
    "HTTP-Referer": "<YOUR_SITE_URL>", # Optional. Site URL for rankings on openrouter.ai.
    "X-OpenRouter-Title": "<YOUR_SITE_NAME>", # Optional. Site title for rankings on openrouter.ai.
  },
  extra_body={},
  model="google/gemini-2.5-flash-image",
  messages=[
    {
      "role": "user",
      "content": [
        {
          "type": "text",
          "text": "What is in this image?"
        },
        {
          "type": "image_url",
          "image_url": {
            "url": "https://live.staticflickr.com/3851/14825276609_098cac593d_b.jpg"
          }
        }
      ]
    }
  ]
)
print(completion.choices[0].message.content)

google/gemini-3.1-flash-image-preview ​

模型ID：google/gemini-3.1-flash-image-preview

文档链接：https://openrouter.ai/google/gemini-3.1-flash-image-preview/api

参考代码：

py
from openai import OpenAI

client = OpenAI(
  base_url="https://openrouter.ai/api/v1",
  api_key="<OPENROUTER_API_KEY>",
)

# Generate an image
response = client.chat.completions.create(
  model="google/gemini-3.1-flash-image-preview",
  messages=[
          {
            "role": "user",
            "content": "Generate a beautiful sunset over mountains"
          }
        ],
  extra_body={"modalities": ["image", "text"]}
)

# The generated image will be in the assistant message
response = response.choices[0].message
if response.images:
  for image in response.images:
    image_url = image['image_url']['url']  # Base64 data URL
    print(f"Generated image: {image_url[:50]}...")

bytedance-seed/seedream-4.5 ​

模型ID：bytedance-seed/seedream-4.5

文档链接：https://openrouter.ai/bytedance-seed/seedream-4.5

参考代码：

py
from openai import OpenAI

client = OpenAI(
  base_url="https://openrouter.ai/api/v1",
  api_key="<OPENROUTER_API_KEY>",
)

# Generate an image
response = client.chat.completions.create(
  model="bytedance-seed/seedream-4.5",
  messages=[
          {
            "role": "user",
            "content": "Generate a beautiful sunset over mountains"
          }
        ],
  extra_body={"modalities": ["image"]}
)

# The generated image will be in the assistant message
response = response.choices[0].message
if response.images:
  for image in response.images:
    image_url = image['image_url']['url']  # Base64 data URL
    print(f"Generated image: {image_url[:50]}...")