GPT-6 Astra Pro and Hy-MT2-1.8B are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
GPT-6 Astra Pro, from OpenAI, has a 1,050,000-token context window and is priced at $10/M tokens input, $50/M tokens output on OpenRouter.
Hy-MT2-1.8B, from tencent, has a 8,192-token context window and is priced at $0.044/M tokens input, $0.177/M tokens output on OpenRouter.