GPT-5.1 Codex Max
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GPT-5.1 Codex Max vs Qwen3 Coder
Compare GPT-5.1 Codex Max by OpenAI against Qwen3 Coder by Qwen, tested across 37 shared challenges. Updated February 2026.
FAQ
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GPT-5.1 Codex MaxvsQwen3 Coder
37 challenges
Why GPT-5.1 Codex Max?
Leads 1 of 1 benchmarks
Stronger on SWE-bench Verified77.9% vs 69.6%
4 months newerDec 2025
Why Qwen3 Coder?
No standout advantages
Favorites
GPT-5.1 Codex MaxQwen3 Coder
12 / 37
Estimate Complexityreasoning
Tests an AI's ability to make educated estimates based on technical knowledge
Qwen3 Coder
No content available for this output.
Vote
2 / 37
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
GPT-5.1 Codex Max
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Qwen3 Coder
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Vote
3 / 37
Logic Puzzlereasoning
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
GPT-5.1 Codex Max
No content available for this output.
Qwen3 Coder
I need to work through this step-by-step.
Given information:
- Sally has 3 brothers
- Each brother has 2 sisters
Let me think about this carefully:
Since Sally is a girl, she is one of the sisters that each brother has.
If each brother has 2 sisters, and Sally is one of those sisters, then there must be 1 additional sister besides Sally.
Therefore, Sally has 1 sister.
To verify:
- Sally + 1 sister = 2 sisters total
- Each of the 3 brothers has these same 2 sisters
- This matches the given information that each brother has 2 sisters
Sally has 1 sister.
Vote
4 / 37
Math Misconception Testreasoning
Tests an AI's understanding of number representation
GPT-5.1 Codex Max
No content available for this output.
Qwen3 Coder
No content available for this output.
Vote
5 / 37
Stochastic Consistency Testanalysis
Tests an AI's randomness and creativity
GPT-5.1 Codex Max
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Qwen3 Coder
No content available for this output.
Vote
6 / 37
Xbox Controller SVG Artimage generation
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
GPT-5.1 Codex Max
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Qwen3 Coder
No content available for this output.
Vote
7 / 37
Generate a Stand-Up Routineconversation
Tests an AI's humor and creative writing ability
GPT-5.1 Codex Max
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Qwen3 Coder
No content available for this output.
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8 / 37
Realistic AI Interviewconversation
Tests an AI's ability to simulate personalities and predict future trends
GPT-5.1 Codex Max
No content available for this output.
Qwen3 Coder
No content available for this output.
Vote
9 / 37
Satirical Fake News Headlineconversation
Tests an AI's humor and understanding of current events
GPT-5.1 Codex Max
No content available for this output.
Qwen3 Coder
No content available for this output.
Vote
10 / 37
Character Voice Testconversation
Tests an AI's ability to write in distinct character voices
GPT-5.1 Codex Max
No content available for this output.
Qwen3 Coder
No content available for this output.
Vote
11 / 37
Minimalist Landing Pageweb design
Tests an AI's ability to generate a complete, working landing page
GPT-5.1 Codex Max
Qwen3 Coder
Vote
12 / 37
Pokémon Battle UI Recreationweb design
Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.
GPT-5.1 Codex Max
No content available for this output.
Qwen3 Coder
No content available for this output.
Vote
12 of 37