Riverflow V2 Max Preview and R1T Chimera are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Riverflow V2 Max Preview, from Sourceful, has a 8,192-token context window and is priced by the provider serving it on OpenRouter.
R1T Chimera, from tngtech, has a 163,840-token context window and is priced by the provider serving it on OpenRouter.