MODEL PROOF
Nano Banana 2 (Gemini 3.1 Flash Image Preview)
NOT INDEPENDENTLY RATED
No independent LMArena score is published for this model.
- Independent LMArena score
- Not independently rated
- Context window
- 65.54K
- Maximum output
- 58.98K
- Input modalities
- image, text
- Output modalities
- image, text
- Published input price
- $0.500 / 1M tokens
- Published output price
- $3.00 / 1M tokens
- Pricing kind
- fixed
Inspect complete billing conditions and endpoint terms below.
Price from Google AI Studio: the cheapest offer that is serving, at standard delivery and at the maker’s precision or better, at its standard rate.
Every price dimension · USD per million tokens
| Input | $0.500/M |
|---|---|
| Output | $3.00/M |
| Cached input | Unknown/M |
| Cache write | Unknown/M |
| Cache write 1h | Unknown/M |
| Reasoning | Unknown/M |
| Web search | $0.014/call |
Who sells it
The same weights, different shops. Cheapest is not like-for-like when serving precision differs.
1 provider offers · rates, limits and conditions
Rates are USD per million tokens. Endpoint terms can differ even when the quoted price and precision match. A listed parameter is a provider declaration, not a task-success test.
| Seller | Input | Output | Precision | Uptime (1d) |
|---|---|---|---|---|
| Google AI Studiogoogle-ai-studio Endpoint terms
| $0.500 | $3.00 | undeclared | 99.95% |
Independent scores
No independent benchmark has measured this model. Unrated is not a score of zero.
Best rankings by task
- Graphicdesign #4 1264
- Image #4 1275
- Logo #4 1264
Per-task Elo and rank from Design Arena, via OpenRouter’s model feed. The rank is the feed’s, and it counts models OpenRouter does not list.
Capability
| Context window | 65K |
|---|---|
| Max output | 58K |
| Input modes | image, text |
| Tool use | no |
| Reasoning | optional |
| Open weights | no |
Provenance
| Price source | openrouter.ai |
|---|---|
| Fetched | 2026-10-06 |
| Quality data | unrated |
Gemini 3.1 Flash Image Preview, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines...
Questions this page answers
What does Nano Banana 2 (Gemini 3.1 Flash Image Preview) cost?
$0.500/M in, $3.00/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription.
Does Nano Banana 2 (Gemini 3.1 Flash Image Preview) have an independent quality score?
Nano Banana 2 (Gemini 3.1 Flash Image Preview) has no independent quality score in this catalogue. Unrated is not a score of zero.
What beats Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
Nano Banana 2 (Gemini 3.1 Flash Image Preview) has no independent quality score. Unrated is not a score of zero.
Does this page use Artificial Analysis scores for Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
No. Artificial Analysis figures are not published here. Quality on this page is LMArena Elo where a score exists; otherwise the row is unrated.
Does a missing score mean Nano Banana 2 (Gemini 3.1 Flash Image Preview) scored zero?
Unrated is not a score of zero.
MODEL MONUMENT
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The verdict as one SVG, for a README or a docs page. It states this model's dominance status at the balanced workload on the LMArena lens, with the date it was computed, and it is rebuilt with the catalogue — so it changes when the verdict changes, including to one you would rather it did not.
[](https://undominated.ai/models/google__gemini-3.1-flash-image-preview/)<a href="https://undominated.ai/models/google__gemini-3.1-flash-image-preview/"><img src="https://undominated.ai/badge/google__gemini-3.1-flash-image-preview.svg" alt="Nano Banana 2 (Gemini 3.1 Flash Image Preview) — Undominated.ai dominance verdict" height="36"></a>Direct file: https://undominated.ai/badge/google__gemini-3.1-flash-image-preview.svg — a static SVG, written by scripts/build-badges.mjs on every build, so the copy you embed is never
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