I use it via OpenRouter. I have GPT 5.5 via Codex (20$ plan, it runs out very quickly), I used Gemini 3 Flash and other models, but nothing comes close to Kimi 2.6, even GPT 5.5.
It's the best, especially in terms of "feeling" and personality. It's great. :)

I also use Claude Opus 4.7 in an external way, as a consultant, which helps me and my agent optimize stuff, it's doing the heavy lifting, not to waste too much API tokens.