Get API

Gemini 3.1 Flash Image Edit Image

Gemini 3.1 Flash Image Edit Image is available in the Business API catalog.

google/gemini-3.1-flash-image/image-to-image

Capabilities

Best for

  • •Concept art and mood boards
  • •Product and marketing visuals
  • •Batch generation at scale

Not for

  • •Exact text rendering at small sizes
  • •Precise brand-logo reproduction
  • •Vector output

Authentication

api key header

The Pika API uses API keys to authenticate requests. Send your key in the X-API-Key header. Your API key is a secret. Don't expose it in browsers or other client-side code. Instead, call the API from your server. The signed-in playground uses a portal session and never sends your API key.

header
X-API-Key: YOUR_API_KEY

Endpoint

asynchronous · poll for the result

POSThttps://api.dev.pika.art/v1/media/google/gemini-3.1-flash-image/image-to-imagegenerate endpoint
GEThttps://api.dev.pika.art/v1/media/jobs/{request_id}poll until completed
GEThttps://api.dev.pika.art/v1/media/jobs/{request_id}/contentget the result URL

Reference Uploads

media inputs

Media inputs accept any public URL. To use a local file, POST its content_type and size_bytes to /v1/media/uploads, PUT the file to the returned upload_url, then pass the url.

upload
# 1. Request a presigned upload URL. Send the file's content
#    type and its exact size in bytes.
curl -X POST https://api.dev.pika.art/v1/media/uploads \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"content_type": "image/png", "size_bytes": 12345}'


# The response returns two URLs:
#   upload_url: a temporary URL to upload the file to. Expires in 5 minutes.
#   url:        the permanent Pika URL. Pass it to the model as the input.
# {
#   "upload_url": "https://upload.r2.pika.art/...?X-Amz-Signature=...",
#   "url": "https://cdn.pika.art/v2/media/uploads/org_abc/9f8e7d.png"
# }


# 2. Upload the file to upload_url, then pass url to the model.
curl -X PUT "<upload_url>" \
  -H "Content-Type: image/png" \
  --data-binary @input.png

Generate

POST /v1/media/google/gemini-3.1-flash-image/image-to-image

Request

curl -X POST https://api.dev.pika.art/v1/media/google/gemini-3.1-flash-image/image-to-image \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "prompt": "Combine the two references: place the woman in the sculptural red vinyl trench from the first image inside the pistachio gondola cabin from the second image, seated composed on the wooden bench before the big front window with the foggy peaks and cables behind her — the red vinyl the only saturated mass in the pale cabin, its sheen catching the window light. Keep her identity and the coat's sculpted collar exactly. Slightly desaturated, low contrast, fine film grain, matte. No other people, no text.",
  "num_images": 1,
  "aspect_ratio": "3:4",
  "output_format": "png",
  "resolution": "2K",
  "image_urls": [
    "https://cdn.pika.art/v2/media/media_3a69dfb7-8338-4ee1-8b1e-eef659d03cb2/output.jpg"
  ]
}'

Response

{
  "id": "media_8f3a2c91-5b7d-4e0a-9c26-31d4f2a8e6b0",
  "status": "queued"
}

Request body

promptstringrequired
Text prompt describing the image to generate.
num_imagesinteger1default: 1
Number of images to generate.
aspect_ratioenum
Output aspect ratio.
output_formatstringfixed: png
Image file format of the output.
resolutionenum
Output resolution.
image_urlsstring[]required
URLs of the source images to edit.

Accepted values

aspect_ratio
resolution

Input modes

Image urlsimage_urls

Use a public URL directly, or POST { content_type, size_bytes } to /v1/media/uploads, PUT the image to the returned upload_url with the returned headers, then pass the url.

Returns

Returns a job object with status , not the final output. Store the id from the response and poll the job until it completes.

Poll status

GET /v1/media/jobs/{request_id}

Request

curl https://api.dev.pika.art/v1/media/jobs/{request_id} \
  -H "X-API-Key: YOUR_API_KEY"

Response

{
  "id": "media_8f3a2c91-5b7d-4e0a-9c26-31d4f2a8e6b0",
  "status": "running"
}

Poll the job by id until it reaches a terminal state: completed or failed.

The job object

idstring
Unique identifier for the job.
statusenum
The status of the job.One of:
object
The generation output. Present once the job completes.
errorstring
If the job failed, the reason for the failure.

Get result

GET /v1/media/jobs/{request_id}/content

Request

curl https://api.dev.pika.art/v1/media/jobs/{request_id}/content \
  -H "X-API-Key: YOUR_API_KEY"

Response

{
  "url": "https://api.dev.pika.art/v1/files/img_8f3a2c91.png"
}

Once the job completes, fetch a download URL for the generated media.

Returns

urlstring
Download URL for the generated file.

Errors

shared across calls

Errors use conventional HTTP status codes with a JSON body of the shape {"message": "..."}. Validation failures return 422 with a message naming the offending field. Submit rejections after the job row exists (balance, rate limit) return the failed job envelope — branch on error.code.

StatusWhenBody
401 UnauthorizedThe API key is missing or invalid.{"message":"Invalid API key"}
403 ForbiddenAn inactive key is rejected with a `{"message"}` body. A submit that the org balance or postpaid cycle limit cannot cover is rejected after the job row exists and returns the failed job envelope.{"id":"media_8f3a2c91-5b7d-4e0a-9c26-31d4f2a8e6b0","status":"failed","error":{"code":"insufficient_balance","message":"Insufficient org balance"}}
404 Not FoundNo job with that id exists in your org, or the media path names an unknown vendor/model/function.{"message":"media job not found"}
409 ConflictThe result was requested before the job completed, or an Idempotency-Key header was reused with a different body.{"message":"media job is not ready"}
422 Unprocessable EntityThe request body failed validation: an invalid enum value, a missing required field, a wrong type, or malformed JSON. The JSON message names the offending field. A schema-valid parameter combination that cannot be priced instead fails after job creation and returns the failed job envelope with error code `invalid_input`.{"message":"duration: Input should be less than or equal to 15"}
429 Too Many RequestsOrg limit reached: requests per minute or day, or concurrent jobs. Returned as the failed job envelope; check the Retry-After header and retry with a fresh Idempotency-Key.{"id":"media_8f3a2c91-5b7d-4e0a-9c26-31d4f2a8e6b0","status":"failed","error":{"code":"rate_limited","message":"rate limit exceeded: rpm"}}
503 Service UnavailableThe model rail or a backend dependency is temporarily unavailable. Returned as the failed job envelope; retry with backoff and a fresh Idempotency-Key.{"id":"media_8f3a2c91-5b7d-4e0a-9c26-31d4f2a8e6b0","status":"failed","error":{"code":"provider_unavailable","message":"media dispatch unavailable"}}

Pricing

only successful runs are charged

TierPrice
Image output$60.00 / 1M tokens
Input$0.50 / 1M tokens
Output$3.00 / 1M tokens

Per-model pricing

Transparent, usage-based rates for every Google model.

Gemini Omni Flash

Video

Text to Video

Video output$17.50 / 1M tok
Input$1.50 / 1M tok
Output$9 / 1M tok

Image to Video

Video output$17.50 / 1M tok
Input$1.50 / 1M tok
Output$9 / 1M tok

Reference to Video

Video output$17.50 / 1M tok
Input$1.50 / 1M tok
Output$9 / 1M tok

Video to Video

Video output$17.50 / 1M tok
Input$1.50 / 1M tok
Output$9 / 1M tok

Veo 3.1

Video

Text to Video

720pno audio$0.20 / sec
1080pno audio$0.20 / sec
720pwith audio$0.40 / sec
1080pwith audio$0.40 / sec
4kno audio$0.40 / sec
4kwith audio$0.60 / sec

Video Extension

no audio$0.20 / sec
with audio$0.40 / sec

Veo 3.1 Fast

Video

Text to Video

720pno audio$0.08 / sec
720pwith audio$0.10 / sec
1080pno audio$0.10 / sec
1080pwith audio$0.12 / sec
4kno audio$0.25 / sec
4kwith audio$0.30 / sec

Video Extension

no audio$0.08 / sec
with audio$0.10 / sec

Veo 3.1 Lite

Video

Image to Video

720pno audio$0.03 / sec
720pwith audio$0.05 / sec
1080pno audio$0.05 / sec
1080pwith audio$0.08 / sec

Nano Banana Pro

Image

Image to Image

Image output$120 / 1M tok
Input$2 / 1M tok
Output$12 / 1M tok

Text to Image

Image output$120 / 1M tok
Input$2 / 1M tok
Output$12 / 1M tok

Nano Banana 2

Image

Image to ImageCurrent

Image output$60 / 1M tok
Input$0.50 / 1M tok
Output$3 / 1M tok

Text to Image

Image output$60 / 1M tok
Input$0.50 / 1M tok
Output$3 / 1M tok

Nano Banana 2 Lite

Image

Image to Image

Image output$30 / 1M tok
Input$0.25 / 1M tok
Output$1.50 / 1M tok

Text to Image

Image output$30 / 1M tok
Input$0.25 / 1M tok
Output$1.50 / 1M tok

Lyria 3 Pro

Audio • Text to Audio

$0.064 / request

Lyria 3

Audio • Text to Audio

$0.032 / request

Lyria 2

Audio • Music

$0.048 / request

Gemini 3.6 Flash

LLM

Input$1.20 / 1M tok
Output$6 / 1M tok
Cached input$0.12 / 1M tok

Gemini 3.5 Flash-Lite

LLM

Input$0.24 / 1M tok
Output$2 / 1M tok
Cached input$0.024 / 1M tok

Gemini 3.1 Pro

LLM

Input$1.60 / 1M tok
Output$9.60 / 1M tok
Cached input$0.16 / 1M tok

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