Nano Banana 2 (Gemini 3.1 Flash Image) vs Ox Alpha: side-by-side summary

Nano Banana 2 (Gemini 3.1 Flash Image) and Ox Alpha 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, $3/M tokens output on OpenRouter.

Ox Alpha, from Stealth, has a 1,048,576-token context window and is free to use on OpenRouter.

Context window

• Nano Banana 2 (Gemini 3.1 Flash Image): 131,072 tokens
• Ox Alpha: 1,048,576 tokens

Price

• Nano Banana 2 (Gemini 3.1 Flash Image): $0.50/M tokens input, $3/M tokens output
• Ox Alpha: Free

Provided by

• Nano Banana 2 (Gemini 3.1 Flash Image): Google
• Ox Alpha: Stealth

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