Gemini 3.1 Flash Image (Nano Banana 2) vs GPT-3.5 Turbo Instruct
GPT-3.5 Turbo Instruct is cheaper on output tokens, while Gemini 3.1 Flash Image (Nano Banana 2) offers a larger context window. Choose Gemini 3.1 Flash Image (Nano Banana 2) or GPT-3.5 Turbo Instruct based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Gemini 3.1 Flash Image (Nano Banana 2) | GPT-3.5 Turbo Instruct |
|---|---|---|
| Provider | Vercel AI Gateway | Vercel AI Gateway |
| Input / 1M tokens | $0.50 | $1.50 |
| Output / 1M tokens | $3.00 | $2.00 |
| Context window | 131K | 8K |
| Parameters | — | 20B |
| Open weights | No | No |
| Released | May 2026 | Sep 2023 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.