Overview
GPT-5.4 Image 2 vs Nano Banana 2 (Gemini 3.1 Flash Image Preview): side-by-side summary
GPT-5.4 Image 2 and Nano Banana 2 (Gemini 3.1 Flash Image Preview) are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
GPT-5.4 Image 2, from OpenAI, has a 272,000-token context window and is priced at $8/M tokens input, $30/M tokens output on OpenRouter.
Nano Banana 2 (Gemini 3.1 Flash Image Preview), from Google, has a 65,536-token context window and is priced at $0.50/M tokens input, $60/M tokens output on OpenRouter.
- Context window
- GPT-5.4 Image 2: 272,000 tokens
- Nano Banana 2 (Gemini 3.1 Flash Image Preview): 65,536 tokens
- Price
- GPT-5.4 Image 2: $8/M tokens input, $30/M tokens output
- Nano Banana 2 (Gemini 3.1 Flash Image Preview): $0.50/M tokens input, $60/M tokens output
- Provided by
- GPT-5.4 Image 2: OpenAI
- Nano Banana 2 (Gemini 3.1 Flash Image Preview): Google