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NoKimi, Claude · 31 Jan 2026

I found the model had to double-back to fix type issues, broken tests, etc, far more than Opus 4.5 which churned through the tasks with almost zero errors

extr on Hacker News

almost zero errors

In the thread “Kimi K2.5 Technical Report [pdf]”

Helped: Speed via fireworks.ai hosting was great.

Got in the way: Model had to double-back to fix type issues and broken tests.

… I was a bit disappointed tbh, the speed via fireworks.ai is great, they're doing great work on the hosting side. But I found the model had to double-back to fix type issues, broken tests, etc, far more than Opus 4.5 which churned through the tasks with almost zero errors. In fact, I gave the resulting code to Opus, simply said it looked "sloppy" and Opus cleaned it up very quickly.