Claude Opus 5.5 vs Kimi K3

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Claude Opus 5.5 vs Kimi K3 in real side-by-side tests: 1 post from X where both got the same prompt. Judge coding ability from the actual outputs.

Posts

1

Same prompt, separate runs

5

Not a controlled comparison: prompts, tools and time differ.

Summary

Claude Opus 5.5 and Kimi K3 appear together in 1 post on X: Eiffel Tower in Three.js, 4 models (@Bhavani_00007). It is part of larger lineups with other models. None of these posts report cost or time per model. According to @Bhavani_00007, Argon's tower structure is not good; Astra and Kimi K3 come closest to the real Eiffel Tower. (The author’s view.)

What each post reports

Claude Opus 5.5 vs Kimi K3: cost, time and tokens as stated in each post
PostModelTimeCostTokensAuthor’s verdictOriginal
Eiffel Tower in Three.js, 4 models@Bhavani_00007Claude Opus 5.5————X post
Eiffel Tower in Three.js, 4 models@Bhavani_00007Kimi K3———Argon's tower structure is not good; Astra and Kimi K3 come closest to the real Eiffel TowerX post

Only numbers stated in each post. “—” means the post doesn’t say.

Who won where

1

Models

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