Nano Banana Pro (Gemini 3 Pro Image Preview)
by Google · google/gemini-3-pro-image-preview · #278 cheapest of 325 paid models
Prices updated Jul 22, 2026, 2:48 AM UTC · refreshed hourly
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
$2.00
per 1M tokens
Output
$12.00
per 1M tokens
Blended (3:1)
$4.50
3 input : 1 output
Cache read
$0.20
per 1M cached tokens
Cache write
$0.375
per 1M tokens
Cache & batch economics
Effective prices for Nano Banana Pro (Gemini 3 Pro Image Preview) with prompt caching.
| Cache hit rate | Effective blended $/1M | Example request* | vs no cache |
|---|---|---|---|
| 0% | $4.50 | $0.216 | — |
| 50% | $3.83 | $0.126 | −42% |
| 90% | $3.29 | $0.054 | −75% |
*Example: 100K sticky context + 2K new input + 1K output. Batch discount is an approximate 50% off list rates for this provider’s batch API. Confirm on the vendor’s pricing page.
What a request costs
| Workload | Input tokens | Output tokens | Cost / request | Cost / 1K requests |
|---|---|---|---|---|
| Short chat message | 500 | 300 | $0.0046 | $4.60 |
| Document summary | 8,000 | 1,000 | $0.028 | $28.00 |
| Codebase question (RAG) | 30,000 | 2,000 | $0.084 | $84.00 |
| Long-context analysis | 150,000 | 5,000 | $0.36 | $360.00 |
Performance
Intelligence Index
—
AA composite quality
Coding Index
—
Math Index
—
Agentic Index
—
Output speed
—
median
Time to first token
—
median
Time to first answer
—
after reasoning tokens
Design Arena Elo
| Category | Elo |
|---|---|
| Graphic design | 1,277 |
| Logo | 1,254 |
| Image | 1,266 |
| Image editing | 1,268 |
Specs
Context window
66K
tokens
Max output
33K
tokens
Input modalities
image, text
Tokenizer
Gemini