Gemini Flash Image
gemini-3.1-flash-image-preview — fast generation and multi-reference compositing (tested live)
gemini-3.1-flash-image-preview is a fast image model that shines at compositing from many
reference images — it accepts up to 14 image_urls, so it's great for blending multiple subjects,
styles or products into one scene. Async task; poll for status.
Tested live: the example below is a real call to
api.aiclonevoicefree.com. Endpoint:POST /api/v2/image/generate｜ Auth:Authorization: Bearer sk_...
Request
| Field | Type | Required | Notes |
|---|---|---|---|
prompt | string | ✅ | Text prompt |
model | string | ✅ | gemini-3.1-flash-image-preview |
size | string | ⬜ | 1:1 (default) / 16:9 / 9:16 |
image_urls | string[] | ⬜ | Reference images, up to 14 |
seed | int | ⬜ | Random seed |
curl -X POST https://api.aiclonevoicefree.com/api/v2/image/generate \
-H "Authorization: Bearer sk_your_api_key" \
-H "Content-Type: application/json" \
-d '{
"prompt": "a corgi under cherry blossoms, cinematic",
"model": "gemini-3.1-flash-image-preview",
"size": "16:9"
}'Response 202
{ "task_id": "273e36005d4f40209ba92a48567a5db4", "status": "pending", "capability": "image", "action": "generate", "model": "gemini-3.1-flash-image-preview" }Multi-reference compositing — up to 14 images:
curl -X POST https://api.aiclonevoicefree.com/api/v2/image/generate \
-H "Authorization: Bearer sk_your_api_key" \
-H "Content-Type: application/json" \
-d '{
"prompt": "place all three products on a marble table, studio lighting",
"model": "gemini-3.1-flash-image-preview",
"image_urls": ["https://example.com/a.png", "https://example.com/b.png", "https://example.com/c.png"]
}'Getting the result
Poll GET /api/v2/tasks/{task_id}; when done (real result from the test call above):
{
"status": "completed",
"capability": "image",
"_type": "image.generate",
"imageUrl": "https://upload.apib.ai/f/image/...0.png"
}Billing
Flat 3 video credits per image — independent of size or the number of reference images; n is fixed to 1.
Example: one image, even with 14 reference images = 3 credits.
Settled on completion, failures auto-refunded (see Conventions). Uses video credits.