Hy4 preview and Inkling are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Hy4 preview, from tencent, has a 1,048,576-token context window and is priced at $0.834/M tokens input, $2.501/M tokens output 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.