Qwen3 Max and Grok 4 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Qwen3 Max, from Qwen, has a 262,144-token context window and is priced at $0.78/M tokens input, $3.90/M tokens output on OpenRouter.
Grok 4, from SpaceXAI, has a 256,000-token context window and is priced by the provider serving it on OpenRouter.