GLM 5.2 and Phi 4 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
GLM 5.2, from Z.ai, has a 1,048,576-token context window and is priced at $0.3248/M tokens input, $1.021/M tokens output on OpenRouter.
Phi 4, from Microsoft, has a 16,384-token context window and is priced at $0.07/M tokens input, $0.14/M tokens output on OpenRouter.