Kimi K3 and GPT Chat Latest are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Kimi K3, from moonshotai, has a 1,048,576-token context window and is priced at $2.80/M tokens input, $14/M tokens output on OpenRouter.
GPT Chat Latest, from OpenAI, has a 400,000-token context window and is priced at $5/M tokens input, $30/M tokens output on OpenRouter.