Gemini 3.5 Flash and Qwen3.6 Plus are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Gemini 3.5 Flash, from Google, has a 1,048,576-token context window and is priced at $1.50/M tokens input, $9/M tokens output on OpenRouter.
Qwen3.6 Plus, from Qwen, has a 1,000,000-token context window and is priced at $0.325/M tokens input, $1.95/M tokens output on OpenRouter.