GLM 5.1 and Cydonia 24B V4.1 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
GLM 5.1, from Z.ai, has a 204,800-token context window and is priced at $0.9086/M tokens input, $2.856/M tokens output on OpenRouter.
Cydonia 24B V4.1, from Drummer, has a 131,072-token context window and is priced at $0.30/M tokens input, $0.50/M tokens output on OpenRouter.