Compare FLUX.2 Pro from black-forest-labs, Nano Banana 2 (Gemini 3.1 Flash Image) from Google, and GPT Image 2.5 Sunburst from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access all 3 models and hundreds of others through the OpenRouter API.
FLUX.2 Pro, Nano Banana 2 (Gemini 3.1 Flash Image), and GPT Image 2.5 Sunburst are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
FLUX.2 Pro, from black-forest-labs, has a 46,864-token context window and is priced at $0.03/megapixel on OpenRouter.
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, $60/M tokens output on OpenRouter.
GPT Image 2.5 Sunburst, from OpenAI, has a 400,000-token context window and is priced at $8/M tokens input, $30/M tokens output on OpenRouter.