Pairwise benchmark snapshot · Aug 1, 2026
Comparing verified benchmark accuracy, speed, and token pricing between Nano Banana 2 (Gemini 3.1 Flash Image) and Nano Banana Pro (Gemini 3 Pro Image). Review the complete breakdown below to determine which model best fits your performance and budget requirements.
5 direct benchmark disciplines evaluated across capability, speed, and cost
Google high-speed multimodal generative model delivering top Elo performance at half the latency and cost of Pro.
Google DeepMind frontier multimodal image generation flagship with Deep Research and complex multi-object spatial reasoning.
Currently comparing Nano Banana 2 (Gemini 3.1 Flash Image) vs Nano Banana Pro (Gemini 3 Pro Image). Alternative family tiers available.
Δ 24 Image Elo pts
2.5s per render
$67/1k images
Category wins across reasoning intelligence, generation speed, and token cost.
Arena Preference Elo, prompt fidelity & typography score
Time to render full-resolution image snapshot (seconds)
API inference cost per 1,000 generated images
| Benchmark | Nano Banana 2 (Gemini 3.1 Flash Image) | Nano Banana Pro (Gemini 3 Pro Image) | Advantage Delta |
|---|---|---|---|
| Image Elo | +24 | ||
| Generation time | +1.7s | ||
| Price per 1k images | $134/1k | +$67/1k | |
| Prompt adherence | +1.3% | ||
| Text rendering | +1.2% |
Simulate monthly production API costs in USD (US Dollar).
Nano Banana 2 (Gemini 3.1 Flash Image) is estimated to save $1,675.00/month ($20,100/year).
Need SWE-bench on both sides.
Need list prices.
Need TTFT on both sides.
Need context sizes.
Both accept images. Defaulting to the higher-Elo side (undefined).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | insufficient data | Need SWE-bench on both sides. |
| High-volume chat | insufficient data | Need list prices. |
| Voice / low-latency UI | insufficient data | Need TTFT on both sides. |
| Long-document RAG | insufficient data | Need context sizes. |
| Screenshots / vision | insufficient data | Both accept images. Defaulting to the higher-Elo side (undefined). |
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Verified Head-to-Head Telemetry