Nano Banana Pro (Gemini 3 Pro Image Preview)

Nano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro. It extends the original Nano Banana with significantly improved multimodal reasoning, real-world grounding, and high-fidelity visual synthesis. The model generates context-rich graphics, from infographics and diagrams to cinematic composites, and can incorporate real-time information via Search grounding. It offers industry-leading text rendering in images (including long passages and multilingual layouts), consistent multi-image blending, and accurate identity preservation across up to five subjects. Nano Banana Pro adds fine-grained creative controls such as localized edits, lighting and focus adjustments, camera transformations, and support for 2K/4K outputs and flexible aspect ratios. It is designed for professional-grade design, product visualization, storyboarding, and complex multi-element compositions while remaining efficient for general image creation workflows.

ChatGoogle66k tokens$2.1801 / $13.0807 · 1M

google/gemini-3-pro-image-preview

Context
66k tokens
Completion cap
32,768
Tools
No
JSON
Yes
Released
2025-11-20

Call it from Geek Hub

Same OpenAI SDK. Change the base URL and the model id.

curl https://api.geekhub.mx/v1/chat/completions \
  -H "Authorization: Bearer $GEEKHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "google/gemini-3-pro-image-preview",
    "messages": [{"role": "user", "content": "Hola"}]
  }'
Get an API key

Frequently asked questions

What is Nano Banana Pro (Gemini 3 Pro Image Preview)?
Nano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro. It extends the original Nano Banana with significantly improved multimodal reasoning, real-world grounding, and high-fidelity visual synthesis. The model generates context-rich graphics, from infographics and diagrams to cinematic composites, and can incorporate real-time information via Search grounding. It offers industry-leading text rendering in images (including long passages and multilingual layouts), consistent multi-image blending, and accurate identity preservation across up to five subjects. Nano Banana Pro adds fine-grained creative controls such as localized edits, lighting and focus adjustments, camera transformations, and support for 2K/4K outputs and flexible aspect ratios. It is designed for professional-grade design, product visualization, storyboarding, and complex multi-element compositions while remaining efficient for general image creation workflows. Nano Banana Pro (Gemini 3 Pro Image Preview) runs on the Geek Hub API (OpenAI-compatible). Model id: google/gemini-3-pro-image-preview.
Is Nano Banana Pro (Gemini 3 Pro Image Preview) free?
No. Input is $2.1801 per 1M tokens and output is $13.0807 per 1M tokens on Geek Hub (markup included).
What is the context length of Nano Banana Pro (Gemini 3 Pro Image Preview)?
Nano Banana Pro (Gemini 3 Pro Image Preview) has a 66k tokens context window. It supports up to 32,768 completion tokens.
Does Nano Banana Pro (Gemini 3 Pro Image Preview) support tool calling and structured outputs?
Nano Banana Pro (Gemini 3 Pro Image Preview) does not advertise tool calling on this endpoint. It also supports structured outputs via a JSON schema in response_format.
When was Nano Banana Pro (Gemini 3 Pro Image Preview) released?
Nano Banana Pro (Gemini 3 Pro Image Preview) was released on 2025-11-20.

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