Nano Banana 2 (Gemini 3.1 Flash Image) vs Mistral Medium 3.5: side-by-side summary

Nano Banana 2 (Gemini 3.1 Flash Image) and Mistral Medium 3.5 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.

Mistral Medium 3.5, from Mistral AI, has a 262,144-token context window and is priced at $1.50/M tokens input, $7.50/M tokens output on OpenRouter.

Context window

• Nano Banana 2 (Gemini 3.1 Flash Image): 131,072 tokens
• Mistral Medium 3.5: 262,144 tokens

Price

• Nano Banana 2 (Gemini 3.1 Flash Image): $0.50/M tokens input, $3/M tokens output
• Mistral Medium 3.5: $1.50/M tokens input, $7.50/M tokens output

Provided by

• Nano Banana 2 (Gemini 3.1 Flash Image): Google
• Mistral Medium 3.5: Mistral AI

• Nano Banana 2 (Gemini 3.1 Flash Image) model details, providers and pricing
• Mistral Medium 3.5 model details, providers and pricing