Nemotron 3.5 Content Safety and Solar Pro 4 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Nemotron 3.5 Content Safety, from Nvidia, has a 128,000-token context window and is priced by the provider serving it on OpenRouter.
Solar Pro 4, from upstage, has a 524,288-token context window and is priced at $0.03/M tokens input, $0.12/M tokens output on OpenRouter.