KAT-Coder-Pro V2.5 and GPT-6 Astra Pro are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
KAT-Coder-Pro V2.5, from kwaipilot, has a 262,144-token context window and is priced at $0.74/M tokens input, $2.96/M tokens output on OpenRouter.
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.