Nano Banana Pro vs Gemini 3.1 Pro Preview Custom Tools
Nano Banana Pro is the cheaper option on input; Nano Banana Pro is cheaper on output. Figures below are per million tokens, from vendor pricing cited in our reporting.
| Nano Banana Pro | Gemini 3.1 Pro Preview Custom Tools | |
|---|---|---|
| Input per 1M tokens | $2 | $2 |
| Output per 1M tokens | $12 | $12 |
| Cached input per 1M | $0.20 | $0.20 |
| Context window | 131K tokens | 1.048576M tokens |
| Parameters | — | — |
| Licence | ||
| Benchmark | — | — |
| Vendor | ||
| Released | — | — |
What the numbers say
- Input price gap: 0% ($2 vs $2).
- Blended three-to-one input/output rate: $18.00 for Nano Banana Pro, $18.00 for Gemini 3.1 Pro Preview Custom Tools.
- Context: 131K tokens against 1.048576M tokens.
- Licence: Nano Banana Pro is ; Gemini 3.1 Pro Preview Custom Tools is .
Sources
Nano Banana Pro specs · Gemini 3.1 Pro Preview Custom Tools specs · Full price index