Bearer sk-xxxxxxxxxxgemini-2.5-flash-image (Nano Banana), gemini-3-pro-image-preview (Nano Banana Pro), etc.doubao-seedream-3-0-t2i-250415, doubao-seedream-4-0-250828, doubao-seedream-4-5-251128, doubao-seededit-3-0-i2i-250628, etc.gpt-image-1, etc.qwen-image-plus, qwen-image-edit-plus, etc.b64_json or urlNote: Different models have different support for response_format:b64_json format, always returns base64-encoded image data regardless of the value passedresponse_format parameter may not take effectb64_json format, forces base64-encoded image datab64_json and url, returns the corresponding format based on the parameter value (b64_json will download from URL and convert to base64)1024x1024, 1152x864, 864x1152, 1280x720, 720x1280, 1248x832, 832x1248, 1512x6482048x2048, 2304x1728, 1728x2304, 2560x1440, 1440x2560, 2496x1664, 1664x2496, 3024x1296 (2K) or 4096x4096, 4704x3520, 3520x4704, 5504x3040, 3040x5504, 4992x3328, 3328x4992, 6240x2656 (4K)0 to 21474836471.0-10.0, default: 2.5. Only supported by doubao-seedream-3.0-t2i-250415 and doubao-seededit-3.0-i2i-250628doubao-seedream-4.0 and doubao-seedream-4.5:"auto": Enable sequential image generation"disabled": Disable sequential image generation (default)sequential_image_generation is "auto":max_images (integer): Maximum number of images, range 1-4, default 4mode (string): Optimization mode
"standard": Standard mode, higher quality but longer time (default, supported by both 4.0 and 4.5)"fast": Fast mode, shorter time but average quality (only 4.0)gemini-2.5-flash-image (Nano Banana)
Core Capabilities:
gemini-3-pro-image-preview (Nano Banana Pro)
Core Capabilities:
doubao-seedream-3-0-t2i-250415
Core Capabilities:
doubao-seedream-4-0-250828
Core Capabilities:
doubao-seedream-4-5-251128
Core Capabilities:
doubao-seededit-3-0-i2i-250628
Core Capabilities:
gpt-image-1
Core Capabilities:
low, medium, high
Generation Count: Can generate 1-10 images per request
Image Input: Supports JPEG, PNG, GIF, WEBP formats, max 10MB, up to 10 images
Model Name: gpt-image-1-mini
Core Capabilities:
low, medium, high
Generation Count: Can generate 1-10 images per request
qwen-image-plus
Core Capabilities:
qwen-image-edit-plus
Core Capabilities:
What image formats are supported?
How long are generated images valid?
Can I generate multiple images at once?