Qwen3.7 Flash and Gemini 3.5 Flash Lite are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Qwen3.7 Flash, from Qwen, has a 1,000,000-token context window and is priced at $0.03/M tokens input, $0.13/M tokens output on OpenRouter.
Gemini 3.5 Flash Lite, from Google, has a 1,048,576-token context window and is priced at $0.30/M tokens input, $2.50/M tokens output on OpenRouter.