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

google/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...

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Pricing

Input$1.40 /M
Output$8.40 /M
Reasoning$8.40 /M
Cache read$0.1400 /M
Cache write$0.2625 /M
Image$0.00000 /image
Web search$0.0098 /req

Specs

Context length65.5K tokens
Max output32.8K tokens
Inputimage, text
Outputimage, text

Quickstart

Point the OpenAI SDK at https://tokenroute.app/api/v1 and use a TokenRoute API key.

bash
curl https://tokenroute.app/api/v1/chat/completions \
  -H "Authorization: Bearer $TOKENROUTE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "google/gemini-3-pro-image-preview",
    "messages": [{ "role": "user", "content": "Hello!" }]
  }'

Supported parameters

include_reasoning
max_tokens
reasoning
response_format
seed
stop
structured_outputs
temperature
top_p