FLUX.2 Flex vs Nano Banana (Gemini 2.5 Flash Image): side-by-side summary

FLUX.2 Flex and Nano Banana (Gemini 2.5 Flash Image) are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

FLUX.2 Flex, from black-forest-labs, has a 67,344-token context window and is priced from $0.06/megapixel on OpenRouter.

Nano Banana (Gemini 2.5 Flash Image), from Google, has a 32,768-token context window and is priced at $0.30/M tokens input, $2.50/M tokens output on OpenRouter.

Context window

• FLUX.2 Flex: 67,344 tokens
• Nano Banana (Gemini 2.5 Flash Image): 32,768 tokens

Price

• FLUX.2 Flex: from $0.06/megapixel
• Nano Banana (Gemini 2.5 Flash Image): $0.30/M tokens input, $2.50/M tokens output

Provided by

• FLUX.2 Flex: black-forest-labs
• Nano Banana (Gemini 2.5 Flash Image): Google

• FLUX.2 Flex model details, providers and pricing
• Nano Banana (Gemini 2.5 Flash Image) model details, providers and pricing