Fal.ai Images

Text-to-image generation and image editing via Fal.ai endpoints

Fal.ai Images

Crazyrouter proxies Fal.ai image generation endpoints, supporting text-to-image and image editing.

Text-to-Image

POST /fal-ai/nano-banana

Request Parameters

Parameter	Type	Required	Description
prompt	string	Yes	Image description prompt
negative_prompt	string	No	Negative prompt
image_size	string	No	Image size: square_hd, landscape_4_3, portrait_4_3, landscape_16_9, portrait_16_9
num_images	integer	No	Number of images, default 1
seed	integer	No	Random seed
guidance_scale	number	No	Guidance strength
num_inference_steps	integer	No	Number of inference steps

Request Examples

cURL

curl -X POST https://crazyrouter.com/fal-ai/nano-banana \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "prompt": "A majestic eagle soaring over snow-capped mountains at sunrise",
    "image_size": "landscape_16_9",
    "num_images": 1
  }'

Response Example

{
  "images": [
    {
      "url": "https://fal.media/files/...",
      "width": 1344,
      "height": 768,
      "content_type": "image/jpeg"
    }
  ],
  "seed": 42,
  "prompt": "A majestic eagle soaring over snow-capped mountains at sunrise"
}

---

Image Editing

POST /fal-ai/nano-banana/edit

Edit an existing image.

Request Parameters

Parameter	Type	Required	Description
prompt	string	Yes	Edit description
image_url	string	Yes	Original image URL
mask_url	string	No	Mask image URL
strength	number	No	Edit strength, 0-1

Request Example

cURL

curl -X POST https://crazyrouter.com/fal-ai/nano-banana/edit \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "prompt": "Add a rainbow in the sky",
    "image_url": "https://example.com/landscape.jpg",
    "strength": 0.6
  }'

Response Example

{
  "images": [
    {
      "url": "https://fal.media/files/...",
      "width": 1024,
      "height": 1024,
      "content_type": "image/jpeg"
    }
  ]
}

Fal.ai endpoints support multiple underlying models. For available models, refer to the Model Pricing page.