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I tested Ox Alpha vs Kimi K3 Ran Ox Alpha through the Claude Code harness. Honestly, I expected much more from Ox Alpha. IMO, it wasn't even close to GPT-5.6 Terra. Kimi K3 was the clear winner for me. What model could this be?

106,084 views • 2 months ago •via X (Twitter)

35 Comments

KRISHNA's profile picture
KRISHNA2 months ago

Kimi K3 much better than alpha

Chris's profile picture
Chris2 months ago

Kimi is so goated man

Bhavy☄️'s profile picture
Bhavy☄️2 months ago

It is indeed

Sahil Panhotra | Indie Builder's profile picture
Sahil Panhotra | Indie Builder2 months ago

yeah its not fronteir level it is more like opus 4.8 level

Tech2Wild's profile picture
Tech2Wild2 months ago

What’s that rocket prompt

harsh's profile picture
harsh2 months ago

Kimi K3 is goat 🔥 What prompt did you use ?

yash.jsx's profile picture
yash.jsx2 months ago

Kimi is really good

Pratham🪐's profile picture
Pratham🪐2 months ago

is building games is benchmarks for llms now?

Hussain Hashim | Building SundayBack's profile picture
Hussain Hashim | Building SundayBack2 months ago

@Bhavani_00007 interesting, didn't think Kimi K3 would shine like that. Makes me wonder what Ox Alpha's main focus actually is. Maybe different strengths?

Neo's profile picture
Neo2 months ago

I love kimi! Can’t be beat

Death Star Robot 🇺🇸 🇹🇼 🇺🇦's profile picture
Death Star Robot 🇺🇸 🇹🇼 🇺🇦2 months ago

So Ox Alpha was just benchmaxxed?

MyDick's profile picture
MyDick2 months ago

Kimi was always a strange beast that in some cases performed exceptionally well.

Nico's profile picture
Nico2 months ago

Running both through the same harness is what makes it hold, otherwise its two variables

Adel Bucetta's profile picture
Adel Bucetta2 months ago

the honest answer is that kimi k3's performance might just be a result of the specific tuning done on the claude code harness, not necessarily an inherent strength of the model itself. could be worth exploring more context around the experiment setup.

Lynote's profile picture
Lynote2 months ago

Kimi K3’s results are genuinely impressive, but a benchmark should show more than just the final demo. To judge the result fairly, we also need the full context: how long it took, how much compute or how many tokens were used, and how many external assets, images, 3D models, or other materials were involved.

Ryan Sael's profile picture
Ryan Sael2 months ago

grok 4.5

Bally_AgenticAI's profile picture
Bally_AgenticAI2 months ago

Harness fit is the hidden variable here - Claude Code's scaffold is tuned for Claude-style behavior, so Ox Alpha may be fighting the harness, not the task. Vibes can't separate model from scaffold; behavioral evals can. #LLM #LLMOps @Kimi_Moonshot

Mari's profile picture
Mari2 months ago

Kimi for me

Vib3Coded's profile picture
Vib3Coded2 months ago

I made a comparison of Grok 4.6 vs CHATGPT 5.6 Sol

Hossamudin Hassan Ewies's profile picture
Hossamudin Hassan Ewies2 months ago

gemini pro? any chance sharing the prompts? :) Great work

Sarthak's profile picture
Sarthak2 months ago

How do you tested?

阿台🕊️'s profile picture
阿台🕊️2 months ago

Ox Alpha's performance gap suggests the market hasn't priced in its true potential yet.

Akshay Joshi's profile picture
Akshay Joshi2 months ago

So ox alpha is not haiku then composer 3 or Qwen 3.8 flash next

Aditi Gupta's profile picture
Aditi Gupta2 months ago

nteresting result. My take: the hype around Ox Alpha is ahead of the evidence. It may be useful for long-running coding tasks, but reports on speed, reliability, and output quality are mixed. Still worth trying while it’s free until August 27.

Agentlas AI's profile picture
Agentlas AI2 months ago

Same-harness comparisons are the only fair kind, nice. Since winners rotate monthly, we keep the harness open source and model-agnostic — swap what's underneath without rebuilding agents or memory: #AI #AIAgents #Agentlas

Nico Delgado's profile picture
Nico Delgado2 months ago

Kimi wins by fatality

Leo builds's profile picture
Leo builds2 months ago

There is a huge gap between them.

国殇1644's profile picture
国殇16442 months ago

Kimi is fable level frontend

Hamza 🌙's profile picture
Hamza 🌙2 months ago

What I would separate is model quality from harness reliability. Did Ox Alpha lose because the output was worse, or because the run stopped early / needed more steering? The same model can look very different if the execution loop is flaky.

airplanestar 𓂀's profile picture
airplanestar 𓂀2 months ago

one harness run can expose a lot, but it can also bake in workflow bias. the real signal is whether Kimi K3 keeps winning across tasks, budgets, and agent loops

robertus's profile picture
robertus2 months ago

the hidden issue is that code harnesses reward different failure shapes. Kimi often looks better when the task needs stubborn iteration, while mystery models can look impressive until the repo starts pushing back.

Ulhas Patil's profile picture
Ulhas Patil2 months ago

K3 if you also add 2 more for compare Opus and sol its easy to see who gonna win

安叫兽|Bird🕊️ 🔶 BNB's profile picture
安叫兽|Bird🕊️ 🔶 BNB2 months ago

听着像是高期待开局,结果被 Kimi K3 截胡了。

hanqing's profile picture
hanqing2 months ago

名字带Alpha的容易翻车,K3这种低调选手反而能打。

ダメト・ガルム's profile picture
ダメト・ガルム2 months ago

kimi failed the rocket test. the rocket flew off with the harness.

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