Compare Nano Banana Pro (Gemini 3 Pro Image Preview) from Google and GPT-5 Image Mini from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
| Attribute | Nano Banana Pro (Gemini 3 Pro Image Preview) | GPT-5 Image Mini |
|---|---|---|
| Input price | Not applicable | Not applicable |
| Output price | Not applicable | Not applicable |
| Price | $2/M tokens input, $120/M tokens output | $2.50/M tokens input, $8/M tokens output |
| Context window | 65,536 tokens | 400,000 tokens |
| Intelligence Index | Not available | Not available |
| Coding Index | Not available | Not available |
| Agentic Index | Not available | Not available |
| Latency (p50) | Not available | 4.90 s |
| Throughput (p50) | Not available | 77.0 tok/s |
| Provided by | OpenAI | |
| Model page | Nano Banana Pro (Gemini 3 Pro Image Preview) model details, providers and pricing | GPT-5 Image Mini model details, providers and pricing |
GPT-5 Image Mini has the longer context window at 400,000 tokens, compared with 65,536 tokens for Nano Banana Pro (Gemini 3 Pro Image Preview).