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fal-ai/nano-banana-pro/edit

Name: fal-ai/nano-banana-pro/edit
Brand: fal
Availability: InStock

fal-ai/nano-banana-pro/edit is an image to image tool from fal that runs in the background and returns images. Pay as you go from $0.0195 per image, with one API key.

Try itfrom $0.0195 / image

Pricing

resolution: 1K and 2K $0.195, 4K $0.39 per image. Billed on num_images, default 1. enable_web_search adds $0.0195 per request. The final charge comes from usage.

Limits

Runs: In the background
Returns: image
Longest queue wait: 3600s
Run deadline: 1800s
Largest inline input: 1024 KB
Largest input file: 500 MB
Largest output: 4768 MB
Outputs per run: 16

Input

Field	Kind	Default	Description
`prompt` required	text	—	The prompt for image editing.
`image_urls`	URLs or files	—	The URLs of the images to use for image-to-image generation or image editing.
`history`	JSON	—	Previous native user/model turns. Replay a returned conversation's messages unchanged, including thought signatures; the current prompt is appended as a new user turn.
`context`	JSON	—	Ordered text, original images, PDF or UTF-8 text documents appended to the current prompt. Uses a native provider. Images count toward the total 14-reference limit.
`return_history`	true or false	false	Return reusable native conversations with original image parts and provider thought signatures. Uses a native provider. Each generated conversation is independent; send its messages as history for the next turn.
`thinking_level`	text	—	Thinking effort. Pro Image supports only high; omit to retain its provider default. An explicit level requests summaries unless include_thoughts overrides it. Thinking cannot be disabled.
`image_passthrough`	true or false	false	Send reference images and return provider images without resizing or re-encoding, preserving transparency and metadata. Uses direct Google or Vertex APIs; the returned image format may differ from output_format.
`include_thoughts`	true or false	—	Whether to include thought summaries. Omit to preserve the existing behavior: an explicit thinking_level requests summaries. Set limit_generations=false to return summary text in description. This does not disable thinking or return intermediate thought images.
`temperature`	number 0 to 2	—	Sampling temperature. Omit to use the provider default of 1. Explicit values use a direct Google or Vertex API.
`top_p`	number 0 to 1	—	Nucleus sampling probability. Omit to use the provider default of 0.95. Explicit values use a direct Google or Vertex API.
`max_output_tokens`	number (whole) 1 to 32768	—	Maximum output tokens for the generation. Omit to retain the provider default. Explicit values use a direct Google or Vertex API.
`num_images`	number (whole) 1 to 4	1	The number of images to generate.
`seed`	number (whole)	—	The seed for the random number generator.
`aspect_ratio`	one of auto, 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16, 4:1, 1:4, 8:1, 1:8	auto	The aspect ratio of the generated image, including 1:4, 4:1, 1:8 and 8:1.
`output_format`	one of jpeg, png, webp	png	The format of the generated image.
`safety_tolerance`	one of 1, 2, 3, 4, 5, 6	4	The safety tolerance level for content moderation. 1 is the most strict (blocks most content), 6 is the least strict.
`system_prompt`	text		Optional system instruction that steers the model's persona and output style across the request. Leave blank to omit; when provided, it is sent as the system instruction to Gemini (or as a system message on OpenAI-compatible providers).
`resolution`	one of 1K, 2K, 4K	1K	The resolution of the image to generate.
`limit_generations`	true or false	true	Experimental parameter to limit the number of generations from each round of prompting to 1. Set to `True` to to disregard any instructions in the prompt regarding the number of images to generate.
`enable_web_search`	true or false	false	Enable web search for the image generation task. This will allow the model to use the latest information from the web to generate the image.

Same request in code

curl https://api.spiral.ai/v1/runs \
  -H "Authorization: Bearer $SPIRAL_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
    "provider": "fal",
    "model": "fal-ai/nano-banana-pro/edit",
    "input": {
      "prompt": "make a photo of the man driving the car down the california coastline"
    }
  }'