Harness comparisonAI Coding

Nesting dolls in Three.js, Codex vs DeepSeek Harness — OpenAI Codex (GPT-6.1 Sol) vs DeepSeek Harness (DeepSeek V4.1 Flash 1017)

Video byYangyang@yangyang_2048 · originally posted on X
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Same Three.js task: four nesting dolls open, line up from largest to smallest, then nest back together. GPT-6.1 Sol (xhigh) in Codex on the left, DeepSeek V4.1 Flash 1017 in DeepSeek Harness on the right.

Each side pairs a coding harness with its own model, so harness and model differences are mixed. More OpenAI Codex vs DeepSeek Harness. All harness comparisons.

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Task
Nesting dolls in Three.js, Codex vs DeepSeek Harness
Category
3D & Shaders
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Video length
15 s
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