Nano Banana Pro (Gemini 3 Pro Image)
google/gemini-3-pro-imageNano Banana Pro (Gemini 3 Pro Image) is the Pro-tier image generation and editing model of Google's Gemini 3 line, using a reasoning core and producing images alongside text. Google positions it for professional work such as complex graphic design, high-fidelity product mockups and factual data visualizations that need accurate text rendering, with real-world grounding via Google Search and studio-quality visuals up to 4K. Pick Nano Banana 2 instead for faster, higher-volume generation.
- Input price
- $2.00USD / 1M tokens
- Output price
- $12.00USD / 1M tokens
- Cache read
- $0.20USD / 1M tokens
- Context window
- 65.5K
- Max output
- 32.8K
Try the model
Gemini-native API
This model generates images through the Gemini generateContent API and is not available on Chat Completions or in the Playground. Use the request example below with your SandBase API key.
Model card
Specifications
Pricing
- Input
- $2 / 1M tokens
- Output
- $12 / 1M tokens
- Cache read
- $0.20 / 1M tokens
Context & modalities
- Context window
- 65,536 tokens
- Max output
- 32,768 tokens
- Input
- Text, image
- Output
- Text
Capabilities
- Chat
- Supported
- Vision
- Supported
- Reasoning
- Supported
- Structured output
- Not supported
- Function calling
- Not supported
- Audio input
- Not supported
Access
- Provider
- Model ID
- google/gemini-3-pro-image
- Execution
- sync
- Base URL
- https://api.sandbase.ai
- API
- Gemini generateContent API
- Endpoint
- /v1beta/models/google/gemini-3-pro-image:generateContent
Start building
Send your first request
Gemini-native endpoint with SandBase API key authentication and usage tracking.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1beta/models/google/gemini-3-pro-image:generateContent" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"contents": [
{
"role": "user",
"parts": [
{
"text": "A watercolor illustration of a fox in a snowy forest"
}
]
}
],
"generationConfig": {
"responseModalities": [
"TEXT",
"IMAGE"
]
}
}
SANDBASE_JSON
)
printf '%s\n' "$result"Choose your model
Compare models
| Model | Context | Input / 1M | Output / 1M | Released |
|---|---|---|---|---|
Nano Banana Pro (Gemini 3 Pro Image)This model Google | 64K | $2.00 | $12.00 | Jun 18, 2026 |
Google | 1M | $4.00 | $20.00 | Oct 13, 2026 |
Google | 64K | $1.50 | $7.50 | Oct 8, 2026 |
Google | 1M | $1.50 | $7.50 | Sep 2, 2026 |
Google | 1M | $1.50 | $7.50 | Aug 13, 2026 |
Google | 1M | $0.30 | $2.50 | Jul 21, 2026 |
Questions
FAQ
How do I call Google Nano Banana Pro (Gemini 3 Pro Image) through SandBase?
Create a SandBase API key, then send requests with the model ID "google/gemini-3-pro-image" to Gemini generateContent API (/v1beta/models/google/gemini-3-pro-image:generateContent) at https://api.sandbase.ai. The request examples on this page show the exact payload.
How much does Google Nano Banana Pro (Gemini 3 Pro Image) cost?
$2 per 1M input tokens and $12 per 1M output tokens, billed per request from your SandBase balance. Discounts, when available, are shown in the pricing on this page.
What is the context window of Google Nano Banana Pro (Gemini 3 Pro Image)?
65.5K tokens of context, with up to 32.8K output tokens per response.
Which features does Google Nano Banana Pro (Gemini 3 Pro Image) support?
Google Nano Banana Pro (Gemini 3 Pro Image) supports vision (image input), reasoning. See Specifications above for the full list.
Do I need a separate Google account?
No. One SandBase API key and balance gives you access to Google Nano Banana Pro (Gemini 3 Pro Image) and the other models in the catalog; you do not need to sign up with Google separately.