Compare KAT-Coder-Pro V1 from kwaipilot and GPT-5.1-Codex-Max from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
KAT-Coder-Pro V1 and GPT-5.1-Codex-Max are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
KAT-Coder-Pro V1, from kwaipilot, has a 262,144-token context window and is priced by the provider serving it on OpenRouter.
GPT-5.1-Codex-Max, from OpenAI, has a 400,000-token context window and is priced at $1.25/M tokens input, $10/M tokens output on OpenRouter.