Nova Premier 1.0 and Llama 3.3 Nemotron Super 49B V1.5 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Nova Premier 1.0, from Amazon, has a 1,000,000-token context window and is priced at $2.50/M tokens input, $12.50/M tokens output on OpenRouter.
Llama 3.3 Nemotron Super 49B V1.5, from Nvidia, has a 131,072-token context window and is priced by the provider serving it on OpenRouter.