Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Nano Banana (Gemini 2.5 Flash Image)
A side-by-side comparison of two image models — real specs, pricing, strengths and weaknesses, and a clear verdict on which to choose. Kept current by our agents.
Quick verdict: which should you choose?
Choose Nano Banana 2 (Gemini 3.1 Flash Image Preview) if you need
- ✓Choose Nano Banana 2 (Gemini 3.1 Flash Image Preview) if you need the 131072-token context window for extended image-text sequences.
- ✓Choose Nano Banana 2 (Gemini 3.1 Flash Image Preview) if you need strong long-context multimodal support in preview workflows.
- ✓Choose Nano Banana 2 (Gemini 3.1 Flash Image Preview) if you need efficient handling of large combined image and text inputs.
Choose Nano Banana (Gemini 2.5 Flash Image) if you need
- ✓Choose Nano Banana (Gemini 2.5 Flash Image) if you need the lower $2.5/1M output price.
- ✓Choose Nano Banana (Gemini 2.5 Flash Image) if you need optimized speed on image tasks with strong native vision.
- ✓Choose Nano Banana (Gemini 2.5 Flash Image) if you need a practical 32768-token context for standard multimodal work.
Verdict
Nano Banana 2 (Gemini 3.1 Flash Image Preview) leads on context length with 131072 tokens versus 32768, enabling stronger long-context multimodal support, while Nano Banana (Gemini 2.5 Flash Image) is cheaper at $2.5/1M tokens versus $3/1M. Both share Google proprietary status and image+text focus, but A positions itself for preview workflows with extended context and B prioritizes native vision speed. Neither has reported intelligence or speed metrics, leaving direct performance ties unresolved.
Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Nano Banana (Gemini 2.5 Flash Image): side by side
| Spec | Nano Banana 2 (Gemini 3.1 Flash Image Preview) | Nano Banana (Gemini 2.5 Flash Image) | Winner |
|---|---|---|---|
| Intelligence | — | — | Tie |
| Output speed | — | — | Tie |
| Output price | $3.00/1M | $2.50/1M | Nano Banana (Gemini 2.5 Flash Image) |
| Context | 131K | 33K | Nano Banana 2 (Gemini 3.1 Flash Image Preview) |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | Tie |
Detailed analysis
Context Window
Winner: Nano Banana 2 (Gemini 3.1 Flash Image Preview)Nano Banana 2 provides 131072 tokens while Nano Banana offers 32768 tokens. This gives A a clear advantage for long-context multimodal tasks involving image and text. B's shorter window suits simpler inputs but limits extended sequences.
Pricing
Winner: Nano Banana (Gemini 2.5 Flash Image)Nano Banana costs $2.5 per million output tokens compared to $3 for Nano Banana 2. B is the lower-cost option for high-volume use. Both remain proprietary Google models with no other pricing details provided.
Multimodal Strengths
Winner: TieA highlights efficient image+text handling and long-context support while B emphasizes speed and native vision capabilities. Both are image-focused variants with efficient combined-input processing. Unknown intelligence and speed metrics prevent declaring an overall leader.
Nano Banana 2 (Gemini 3.1 Flash Image Preview)
Pros
- +Efficient handling of image+text inputs
- +Strong long-context multimodal support
- +Fast responses suitable for preview workflows
Cons
- –Preview model may have reduced feature completeness
- –Less depth on pure-text or code tasks versus larger Gemini variants
- –Image-focused specialization limits non-visual use cases
Nano Banana (Gemini 2.5 Flash Image)
Pros
- +Optimized for speed on image tasks
- +Strong native vision capabilities
- +Efficient handling of combined image-text inputs
- +Practical context window for multimodal work
Cons
- –Moderate context length compared to larger models
- –Prioritizes speed over deepest reasoning
- –Image-focused variant may trade off some text-only performance
Summary: Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Nano Banana (Gemini 2.5 Flash Image)
Select Nano Banana 2 when longer context is essential for complex image-text work. Choose Nano Banana for lower cost and speed-focused vision tasks. The models are otherwise closely matched as Google proprietary image specialists.
Frequently asked questions
Nano Banana 2 leads on context length while Nano Banana leads on price; neither has reported intelligence or speed scores so overall superiority is undetermined.