MiniMax M2 and Ministral 3 3B 2512 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
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.
Ministral 3 3B 2512, from Mistral AI, has a 131,072-token context window and is priced at $0.10/M tokens input, $0.10/M tokens output on OpenRouter.