GPT-5 Codex vs Qwen: Qwen3 Max Thinking

Compare GPT-5 Codex by OpenAI against Qwen: Qwen3 Max Thinking by Qwen, tested across 49 shared challenges. Updated April 2026.

Which is better, GPT-5 Codex or Qwen: Qwen3 Max Thinking?

GPT-5 Codex and Qwen: Qwen3 Max Thinking are both competitive models. Compare their real outputs side by side below.

Key Differences Between GPT-5 Codex and Qwen: Qwen3 Max Thinking

GPT-5 Codex is made by openai while Qwen: Qwen3 Max Thinking is from qwen.

Our Verdict
GPT-5 Codex
GPT-5 Codex
Qwen: Qwen3 Max Thinking
Qwen: Qwen3 Max Thinking

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call
Writing DNA

Style Comparison

Similarity
98%

Qwen: Qwen3 Max Thinking uses 9.4x more emoji

GPT-5 Codex
Qwen: Qwen3 Max Thinking
64%Vocabulary61%
17wSentence Length15w
0.38Hedging0.23
2.3Bold5.2
3.5Lists3.9
0.15Emoji1.37
0.49Headings1.22
0.05Transitions0.04
Based on 13 + 13 text responses
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GPT-5 CodexQwen: Qwen3 Max Thinking

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
FAQ

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