Mistral Large 3 2512 and GLM 4.6 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Mistral Large 3 2512, from Mistral AI, has a 262,144-token context window and is priced at $0.50/M tokens input, $1.50/M tokens output on OpenRouter.
GLM 4.6, from Z.ai, has a 204,800-token context window and is priced at $0.43/M tokens input, $1.75/M tokens output on OpenRouter.