Nemotron 3.5 Lightning 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.
Nemotron 3.5 Lightning, from Nvidia, has a 262,144-token context window and is priced at $0.08/M tokens input, $0.20/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.