---
title: "Discussion on \"Kimi K3.1 Pro vs Claude Opus 5.5 for coding agents\" | Hashnode"
description: "Discussion on \"Kimi K3.1 Pro vs Claude Opus 5.5 for coding agents\". Six coding tasks with hidden tests, two runs each: both models passed every test; Kimi K3.1 Pro took 5x as long and cost 2.3x as much per task."
url: "https://hashnode.com/posts/kimi-k3-1-pro-vs-claude-opus-5-5-for-coding-agents/6af3c520d250fc626b7e2194"
---

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# [Kimi K3.1 Pro vs Claude Opus 5.5 for coding agents](https://xiunxiao.hashnode.dev/kimi-k3-1-pro-vs-claude-opus-5-5-for-coding-agents?utm_source=hashnode&utm_medium=feed)

Six coding tasks with hidden tests, two runs each: both models passed every test; Kimi K3.1 Pro took 5x as long and cost 2.3x as much per task.

22h ago · 8 min read · xiunxiao.hashnode.dev  
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