Overview
Analysis
Nano Banana 2 (Gemini 3.1 Flash Image) vs Muse Image vs GPT Image 2.5 Sunburst: side-by-side summary
Nano Banana 2 (Gemini 3.1 Flash Image), Muse Image, and GPT Image 2.5 Sunburst are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Nano Banana 2 (Gemini 3.1 Flash Image), from Google, has a 131,072-token context window and is priced at $0.50/M tokens input, $60/M tokens output on OpenRouter.
Muse Image, from Meta, is priced at $0.01/image on OpenRouter.
GPT Image 2.5 Sunburst, from OpenAI, is priced at $8/M tokens input, $30/M tokens output on OpenRouter.
| Attribute | Nano Banana 2 (Gemini 3.1 Flash Image) | Muse Image | GPT Image 2.5 Sunburst |
|---|---|---|---|
| Context window | 131,072 tokens | Not applicable | Not applicable |
| Price | $0.50/M tokens input, $60/M tokens output | $0.01/image | $8/M tokens input, $30/M tokens output |
| Provided by | Meta | OpenAI | |
| Model page | Nano Banana 2 (Gemini 3.1 Flash Image) model details, providers and pricing | Muse Image model details, providers and pricing | GPT Image 2.5 Sunburst model details, providers and pricing |