Nex-N2.5-Mini and Inkling are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Nex-N2.5-Mini, from nex-agi, has a 262,144-token context window and is priced by the provider serving it on OpenRouter.
Inkling, from thinkingmachines, has a 1,048,576-token context window and is priced at $0.95/M tokens input, $4.05/M tokens output on OpenRouter.