FLUX.2 Flex and MiniMax M2 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.
MiniMax M2, from MiniMax, has a 204,800-token context window and is priced at $0.255/M tokens input, $1.02/M tokens output on OpenRouter.