Compare FLUX.2 Klein 4B from black-forest-labs and Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) from Google on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
FLUX.2 Klein 4B and Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
FLUX.2 Klein 4B, from black-forest-labs, has a 40,960-token context window and is priced at $0.014/megapixel on OpenRouter.
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, $30/M tokens output on OpenRouter.