Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) vs GPT Image 2: side-by-side summary

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) and GPT Image 2 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image), from Google, has a 65,536-token context window and is priced at $0.25/M tokens input, $1.50/M tokens output on OpenRouter.

GPT Image 2, from OpenAI, has a 400,000-token context window and is priced at $8/M tokens input, $8/M tokens output on OpenRouter.

Context window

• Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image): 65,536 tokens
• GPT Image 2: 400,000 tokens

Price

• Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image): $0.25/M tokens input, $1.50/M tokens output
• GPT Image 2: $8/M tokens input, $8/M tokens output

Provided by

• Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image): Google
• GPT Image 2: OpenAI

• Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) model details, providers and pricing
• GPT Image 2 model details, providers and pricing