Nano Banana 2 (Gemini 3.1 Flash Image) is a Google closed-API image generation model. CompareLLM Images Estimated rating is 1780. Render latency averages 17.7s. Gemini 3.1 Flash Image, 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 advanced... Numbers below are dated snapshots from empirical benchmark harnesses.
Independent evaluation answering: "Is Nano Banana 2 (Gemini 3.1 Flash Image) the right model for your workload & budget?"
Image generation is a separate job from vision-language understanding.
Dated snapshot metrics aggregated from official evaluators and API providers with visual relative score bars.
Our Image generation list. Named third-party suites stay labelled as references, not this rating.
Accuracy in including multiple requested entities, spatial relations, styles, and negative prompts.
Legibility and spelling accuracy when generating words, logos, signs, and in-image lettering.
Compact class for how long one standard image takes. Exact seconds stay in the fact sheet.
Commercial API price per 1,000 standard 1024x1024 generated image assets.
Ecosystem support across HuggingFace Diffusers, ComfyUI, ControlNet, and LoRA fine-tuning.
| Benchmark Metric & Meaning | Reported Score & Capability Fill | CompareLLM Review |
|---|---|---|
Output token price Cost to Generate (Output tokens) | $3/1M tok | Source not recorded · Sep 21, 2026Published text output price on the same endpoint. |
Maximum output (tokens) Maximum Response Length | 59k tokens | Source not recorded · Sep 21, 2026Maximum completion tokens for one request on the same endpoint. |
Input token price Cost to Prompt (Input tokens) | $0.5/1M tok | Source not recorded · Sep 21, 2026Published text input price on the endpoint this sheet is read from. |
Context window (tokens) Context Window Capacity (tokens) | 66k tokens | Source not recorded · Sep 21, 2026Maximum input context on the same endpoint. |
Generation time Time to Make One Image | 15–30s | Source not recorded · Sep 21, 2026 |
Peers in the same closed API frontier image performance tier — not a jump to an unrelated frontier SKU.
Select any rival to launch a side-by-side empirical benchmark comparison with winner deltas.
Compare Nano Banana 2 (Gemini 3.1 Flash Image) against
Models may use different benchmarks and test settings. This is an indicative composite, not a controlled head-to-head comparison or community Elo. Admin-approved sentiment estimates fill categories without accepted benchmark results. Estimates are labelled and do not increase benchmark coverage. Coverage refers to the configured recipe, not confidence.
Release recent-models-2026-09-23-r1 · recipe reported-text-2026-09-11-r1 · method reported-with-estimates-v2 · research through 2026-09-23
Overall benchmark coverage includes missing applicable categories. Estimated categories contribute to the rating but add no benchmark coverage.
Editorial estimate, anchored to the Artificial Analysis arena for this modality, where Nano Banana 2 (Gemini 3.1 Flash Image) scores 1122. Placed by where that sits between HiDream-O1-Image-1.5 at 1022 and GPT Image 2.5 Flare at 1188, the span the board published on 2026-09-21, mapped onto 62-88. Arena Elo is blind human preference, not this category's recipe, so this is an ordering anchor rather than a measurement, and it is never compared against another modality's board. Any accepted result that clears the evidence thresholds replaces it.
As of 2026-09-21 · review on 2026-12-21 · Editorial estimate (not a benchmark result)
Sentiment source 1 →What this model is available as, what it takes to run, and where its identity comes from.
The provider's deployment options have not been reviewed for this model.
gemini-3.1-flash-imagegoogle/gemini-3.1-flash-imageCurrently reviewing Nano Banana 2 (Gemini 3.1 Flash Image). Sibling variants in the Nano Banana lineup.
Concise empirical overview formatted for citations and prompt context
Plain-English methodology and leaderboard answers
Follow this model in your watchlist, set it as your global comparison baseline, or assign it to your custom production stack.
Track updates & rank changes
Compare all models against this
Assign to custom architecture
Compare side-by-side vs all
Plotted against all active catalog models (50th percentile = catalog median).
2 of 3 dimensions have ranking-eligible evidence. Missing axes are not converted to zero.
Ranks in the top tier (≥75th percentile) for Image generation.
