Compare GPT-5 Image Mini from OpenAI and Nano Banana Pro (Gemini 3 Pro Image Preview) from Google on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
| Attribute | GPT-5 Image Mini | Nano Banana Pro (Gemini 3 Pro Image Preview) |
|---|---|---|
| Input price | Not applicable | Not applicable |
| Output price | Not applicable | Not applicable |
| Price | $2.50/M tokens input, $8/M tokens output | $2/M tokens input, $120/M tokens output |
| Context window | 400,000 tokens | 65,536 tokens |
| Intelligence Index | Not available | Not available |
| Coding Index | Not available | Not available |
| Agentic Index | Not available | Not available |
| Latency (p50) | 4.98 s | Not available |
| Throughput (p50) | 77.0 tok/s | Not available |
| Provided by | OpenAI | |
| Model page | GPT-5 Image Mini model details, providers and pricing | Nano Banana Pro (Gemini 3 Pro Image Preview) 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).