I tried this on OpenRouter chat interface to write a few documents. Quick thoughts: Its writing has less vibe of AI due to the lack of em-dashes! I primarily use Kimi2 Thinking for personal usage. Kimi writing is also very good, on par with the frontier models like Sonnet or Gemini. But, just like them, Kimi2 also feels AI. I can't quantify or explain why, though.

For work, it is Claude Code and Anthropic exclusively.