Mistral Medium 3.5 and Hy-MT2-1.8B are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Mistral Medium 3.5, from Mistral AI, has a 262,144-token context window and is priced at $1.50/M tokens input, $7.50/M tokens output on OpenRouter.
Hy-MT2-1.8B, from tencent, has a 8,192-token context window and is priced at $0.044/M tokens input, $0.177/M tokens output on OpenRouter.