Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) is Google's fastest, most cost-efficient Gemini image model, built for high-velocity developer pipelines and rapid-fire visual exploration. It delivers text-to-image generation...
Model details →Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) vs Auto Router (Beta)
Auto Router (Beta) wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
The experimental version of our Auto Router where we test new improvements. Use it to get the latest and greatest version of our general purpose auto router, but expect beta...
Model details →Side-by-side comparison
| Capability | Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) | Auto Router (Beta) | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 66K | 2M | 🏆 Auto Router (Beta) |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.25 | $-1000000.00 | 🏆 Auto Router (Beta) |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $1.50 | $-1000000.00 | 🏆 Auto Router (Beta) |
| Tool / function calling First-class support for emitting structured tool calls. | — | Yes | 🏆 Auto Router (Beta) |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) better than Auto Router (Beta)?
Auto Router (Beta) wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) and Auto Router (Beta)?
Input: $0.25 vs $-1000000.00 per 1M tokens. Output: $1.50 vs $-1000000.00 per 1M tokens.
What context windows do Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) and Auto Router (Beta) support?
Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) supports up to 66K tokens. Auto Router (Beta) supports up to 2M tokens.
Do both Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) and Auto Router (Beta) support tool calling?
Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image): not advertised. Auto Router (Beta): yes.