Nova 2 Lite and Cogito V2 Preview Llama 70B are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Nova 2 Lite, from Amazon, has a 1,000,000-token context window and is priced at $0.30/M tokens input, $2.50/M tokens output on OpenRouter.
Cogito V2 Preview Llama 70B, from deepcogito, has a 131,072-token context window and is priced by the provider serving it on OpenRouter.