Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)
google/gemini-3.1-flash-image-preview
Our take
AI-assisted analysis based on the sources below. Suitability is an editorial assessment; test it on your own workload.
According to the OpenRouter catalog, google/gemini-3.1-flash-image-preview, listed as Nano Banana 2, is a Google image generation and editing model that accepts text and image input and returns text and image output. Google's catalog description claims Pro-level visual quality at Flash speed. The catalog reports optional reasoning with configurable effort and a 65,536-token context, and places it near the top of Design Arena leaderboards for graphic design, image, and logo tasks. An independent model card was not available in this source pack, so claims rest on catalog data alone.[1]
Strengths
- Handles text and image in both directions, supporting combined generation and editing workflows according to the OpenRouter catalog.[1]
- Reasoning is optional with configurable effort levels (high, minimal, or none), and the catalog default is minimal.[1]
- The catalog reports leading Design Arena placements for graphic design, image, and logo categories.[1]
Limitations
- All evidence comes from the OpenRouter catalog; an independent model card was not available, so provider claims are unverified and workload validation is recommended.[1]
- This is a preview release, and the catalog does not specify a knowledge cutoff or whether the deployment has an expiration date.[1]
- Image output is priced separately from token usage in the catalog, so costs for image-heavy workloads should be estimated before adoption.[1]
Where to use it
- May suit rapid image generation and editing pipelines where turnaround speed matters, subject to validation on real workloads.[1]
- Could fit graphic design, logo, and visual-asset prototyping, consistent with its reported Design Arena categories.[1]
- Might work for multimodal applications combining text and images in both directions, including structured outputs.[1]
Sources
- [1] OpenRouter catalog · Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)Sources checked: Nov 13, 2026
About this model
Description below is the original text supplied by OpenRouter, shown in the source language.
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...
Specifications
- Model ID
- google/gemini-3.1-flash-image-preview
- Canonical ID
- google/gemini-3.1-flash-image-preview-20260226
- Creator
- Added to OpenRouter
- 26.02.2026
- Context length
- 65,536
- Modality
- text+image->text+image
- Input modalities
- image, text
- Output modalities
- image, text
- Token pricing
- No per-token price in the source snapshot — see OpenRouter for the billing unit
- Knowledge cutoff
- —
- Expiration date
- —
Tasks and capabilities
A grade appears only where the source supplies a matching measurement for that task, the model is active and the cohort holds at least 10 comparable models. The capability column lists facts the source declares — supported formats, reasoning and tool parameters — which are not measured quality.
| Task | Grade | Source-declared capability |
|---|---|---|
| General quality | No measurement | reasoning: optional · default minimal · efforts: high, minimal, none · parameters: include_reasoning, reasoning, reasoning_effort |
| Coding | No measurement | — |
| Agents | No measurement | parameters: structured_outputs |
| Writing | No measurement | output: text |
| Reasoning | No measurement | reasoning: optional · default minimal · efforts: high, minimal, none · parameters: include_reasoning, reasoning, reasoning_effort |
| Document analysis | No measurement | — |
| Vision | No measurement | input: image |
| Image generation | No measurement | output: image |
| Audio | No measurement | — |
| Video | No measurement | — |
| Embeddings | No measurement | — |
Evaluations
| Source | Benchmark | Value | Grade | Data retrieved |
|---|---|---|---|---|
| Design Arena | models · graphicdesignwin rate 66.3% · rank 4 | 1,261Elo | AA — next 20% of the cohort | 13.11.2026 |
| Design Arena | models · imagewin rate 65.1% · rank 4 | 1,259Elo | AA — next 20% of the cohort | 13.11.2026 |
| Design Arena | models · logowin rate 62.9% · rank 4 | 1,263Elo | AA — next 20% of the cohort | 13.11.2026 |
How grades work
Each letter grade compares a model only against other models scored by the same source and metric in the current snapshot. S means the top 10%, A the next 20%, B the next 30%, C the rest. Models without a published measurement are shown as not rated — a supported format alone never implies measured quality.
- S — S — top 10% of the cohort
- A — A — next 20% of the cohort
- B — B — next 30% of the cohort
- C — C — below the B band
Providers
Optional live provider statistics from OpenRouter. Missing values are unknown, not zero.
| Provider | Context length | Price in /1M | Price out /1M | Latency p50 (30m, s) | Throughput p50 (30m, tok/s) | Uptime (30m) |
|---|---|---|---|---|---|---|
| Google AI Studio | 65,536 | — | — | — | — | 100% |
Provider data retrieved: 13.11.2026
Related articles
No published articles identify this model yet.