Qwen3.7 Flash and GPT-5.6 Terra 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.
GPT-5.6 Terra, from OpenAI, has a 1,050,000-token context window and is priced at $1/M tokens input, $6/M tokens output on OpenRouter.