Hy-MT2-1.8B and Claude Sonnet 5 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
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.
Claude Sonnet 5, from Anthropic, has a 1,000,000-token context window and is priced at $2/M tokens input, $10/M tokens output on OpenRouter.