Gemini 3.7 Flash and Grok 4.6 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Gemini 3.7 Flash, from Google, has a 1,048,576-token context window and is priced at $0.375/M tokens input, $1.875/M tokens output on OpenRouter.
Grok 4.6, from SpaceXAI, has a 500,000-token context window and is priced at $2/M tokens input, $6/M tokens output on OpenRouter.