Google: Nano Banana Pro (Gemini 3 Pro Image Preview)

Nano Banana Pro is Google's flagship image-generation and editing model, released 2025-11, built on Gemini 3 Pro. It extends the original Nano Banana with stronger multimodal reasoning, real-world grounding, and high-fidelity synthesis, including text rendering, multi-image blending, and identity preservation across up to five subjects. The model supports fine-grained editing and 4K output, and suits design, product visualization, and storyboarding workflows.

Modalities
inImageinTextoutImage
Price / 1M
$1.90 / $114.00
Context
66K
Released
Nov 20, 2025

Channels

Every channel serves the same model, but they differ in price and stability. On each API key in the Platform, you pick a primary and a backup channel per vendor, and each billing line shows which channel served the request.

Provider
Discount
Input /M
Output /M
Cache read /M
Cache write 5m /M
Cache write 1h /M
Defaultcheap
+728%
$1.90
$114.00
—
—
—
Officialstable
+859%
$2.20
$132.00
—
—
—

Context pricing

This model’s price depends on how much input context a request carries. The headline price is the cheapest band, and a longer prompt moves the whole request into a higher one.

Input context
Input /M
Output /M
Defaultcheap
standardBase
$1.90
$114.00
Officialstable
standardBase
$2.20
$132.00

Capabilities

ReasoningVisionPrompt cachingStructured output

Parameters

Request parameters this model accepts through the API.

include_reasoningmax_tokensreasoningresponse_formatseedstopstructured_outputstemperaturetop_p

Quick start

POST /v1beta/models/{model}:generateContent
curl https://api.mirapi.ai/v1beta/models/gemini-3-pro-image-preview:generateContent \
  -H "x-goog-api-key: $MIRAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [{"parts": [{"text": "A red bicycle leaning on a white wall"}]}],
    "generationConfig": {
      "responseModalities": ["TEXT", "IMAGE"],
      "imageConfig": {"aspectRatio": "1:1"}
    }
  }'
# the image is base64 in candidates[0].content.parts[].inlineData.data
Wire Nano Banana Pro (Gemini 3 Pro Image Preview) into your product

1M free tokens to start, no card required. It’s OpenAI-compatible, so you only change the base URL.

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