Nano Banana Pro API (gemini-3-pro-image-preview)

from $0.03 per image (4K $0.04) — https://api.apimart.ai/v1 OpenAI 호환 엔드포인트 하나면 되고, 월 구독 플랜은 필요 없습니다. (2026-10-12 기준)

API 키 · 가격 · 모델 페이지 · ⚡ 60초 퀵스타트

팀들이 APIMart를 통해 Nano Banana Pro(gemini-3-pro-image-preview)을 쓰는 이유

• 키 하나로 카탈로그 전체를. 동일한 https://api.apimart.ai/v1 base URL과 Authorization 헤더로 Nano Banana Pro(gemini-3-pro-image-preview)과 이미지·비디오·언어 모델 300+ 개에 접근할 수 있습니다. 바꾸는 건 model 필드뿐이고 클라이언트는 그대로입니다.
• 최소 $1, 종량제. 구독도, 사전에 규모를 정해야 하는 선불 플랜도 없습니다. $1부터 충전해 호출한 만큼만 쓰면 됩니다.
• 과금 내역은 응답으로 돌아옵니다. 완료된 모든 작업은 청구 금액(cost / credits_cost)을 보고하고, failed로 표시된 작업은 환불됩니다.
• 비동기 설계. 제출하고 task_id를 받아 GET /v1/tasks/{id}를 폴링하면 끝입니다. 배치와 재시도는 별도 통합이 아니라 평범한 큐 작업입니다.

다른 이름: 나노바나나 · 나노 바나나

Nano Banana Pro is Google's Gemini 3 Pro Image for 4K image generation and editing with multi-step planning.

Model id and routes

Route	model value	Billing	Notes
Per-image	gemini-3-pro-image-preview	per delivered image, by resolution	see the model page for the exact tiers

Endpoint: POST https://api.apimart.ai/v1/images/generations, then poll GET /v1/tasks/{task_id}.

Pricing

Output	List price	Effective price
default	0.0375	0.03
4K	0.05	0.04

Prices are a snapshot; the pricing page and data/model.json are refreshed by CI, and a completed task reports the exact amount in its cost field.

Request parameters

Field	Type	Default	Notes
model	string	required	the model id shown in the route table above
prompt	string	required	what to generate, or what to change when editing
size	string	auto / 1:1	aspect ratio, or auto where the route supports it
resolution	string	1K	output resolution tier — cost scales with it
n	integer	1	number of images per task, where the route allows more than one
image_urls	string[]	—	reference images as public HTTP(S) URLs or base64 data URLs
nsfw_check	boolean	false	runs omni-moderation-latest before submitting

The table lists the fields accepted by the APIMart images/generations endpoint. Check the model page for anything this model adds on top.

Quickstart

curl --request POST --url https://api.apimart.ai/v1/images/generations \
  --header "Authorization: Bearer $APIMART_API_KEY" --header 'Content-Type: application/json' \
  -d '{"model":"gemini-3-pro-image-preview","prompt":"A bamboo forest at sunrise, slow push-in","size":"1:1","resolution":"1K"}'

import os, time, requests

BASE = "https://api.apimart.ai/v1"
HEADERS = {"Authorization": f"Bearer {os.environ['APIMART_API_KEY']}", "Content-Type": "application/json"}

created = requests.post(f"{BASE}/images/generations", headers=HEADERS, timeout=60, json={
    "model": "gemini-3-pro-image-preview", "prompt": "A bamboo forest at sunrise, slow push-in",
}).json()
task_id = created["data"]["id"]

while True:
    task = requests.get(f"{BASE}/tasks/{task_id}", headers=HEADERS, timeout=60).json()["data"]
    if task["status"] in ("completed", "failed"):
        break
    time.sleep(5)
print(task.get("cost"), task["result"]["images"][0]["url"])

Runnable versions: examples/. The task lifecycle is pending → processing → completed | failed.

FAQ

Nano Banana Pro 모델 id는 무엇인가요?

gemini-3-pro-image-preview입니다. 위의 라우트 표를 참고하세요.

과금 방식은 어떻게 되나요?

from $0.03 per image (4K $0.04). 완료된 작업은 cost 필드에 정확한 금액을 보고하고, 실패한 작업은 환불됩니다.

How do I get a key?

Use the Get an API key link — $1 minimum top-up, no plan required.

Related repositories

• Same model, this language — the other half of this pair: gemini-3-pro-image-preview-prompts-ko
• Same model, other languages — 9 more language builds: 中文 gemini-3-pro-image-preview-api-cn · Deutsch gemini-3-pro-image-preview-api-de · Español gemini-3-pro-image-preview-api-es · Français gemini-3-pro-image-preview-api-fr · Relay/gateway gemini-3-pro-image-preview-api-gateway · Bahasa gemini-3-pro-image-preview-api-id · 日本語 gemini-3-pro-image-preview-api-ja · Português gemini-3-pro-image-preview-api-pt · Русский gemini-3-pro-image-preview-api-ru
• More models in this language — midjourney-api-ko · gemini-2-5-flash-image-preview-api-ko · nano-banana-api-ko · gemini-3-1-flash-image-preview-api-ko · nano-banana-2-api-ko · nano-banana-pro-api-ko
• Topic hubs — every build of this model, all languages: gemini-3-pro-image-preview · gemini-3-pro-image-preview-api

This repository is one build in a cross-linked set of API guides for the same model family; each language build links back to the others.

Attributed links (how this repository is measured)

Purpose	Attributed link	Target
Model page	https://go.apimart.ai/k-fe661d	apimart.ai/ko/model/nano-banana-2-api
Live pricing	https://go.apimart.ai/k-e0641a	apimart.ai/ko/pricing
Get an API key	https://go.apimart.ai/k-9fc0aa	apimart.ai/ko/keys

Outbound APIMart links are minted through the promo link API; hand-made tracking parameters are rejected by tools/check_links.py in CI.

Disclosure

Nano Banana Pro is a third-party model served through APIMart; this repository documents how to call it and publishes model ids and prices, and does not claim official status. Model names, prices and documentation belong to their respective owners.

License

MIT — see LICENSE.