Compare FLUX.2 Max from black-forest-labs and GPT-5.1-Codex from OpenAI 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 Max and GPT-5.1-Codex are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
FLUX.2 Max, from black-forest-labs, has a 46,864-token context window and is priced at $0.07/megapixel on OpenRouter.
GPT-5.1-Codex, from OpenAI, has a 400,000-token context window and is priced at $1.25/M tokens input, $10/M tokens output on OpenRouter.