Ox Alpha and MiniMax M2.7 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Ox Alpha, from Stealth, has a 1,048,576-token context window and is free to use on OpenRouter.
MiniMax M2.7, from MiniMax, has a 204,800-token context window and is priced at $0.24/M tokens input, $0.96/M tokens output on OpenRouter.