GPT-5 Codex
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GPT-5 Codex vs Qwen: Qwen3.5 397B A17B
Compare GPT-5 Codex by OpenAI against Qwen: Qwen3.5 397B A17B by Qwen, tested across 49 shared challenges. Updated February 2026.
FAQ
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GPT-5 CodexvsQwen: Qwen3.5 397B A17B
44 challenges
Why GPT-5 Codex?
No standout advantages
Why Qwen: Qwen3.5 397B A17B?
Leads 1 of 1 benchmarks
Stronger on SWE-bench Verified76.4% vs 74.5%
5 months newerFeb 2026
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GPT-5 CodexQwen: Qwen3.5 397B A17B
12 / 44
Estimate Complexityreasoning
Tests an AI's ability to make educated estimates based on technical knowledge
Qwen: Qwen3.5 397B A17B
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2 / 44
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
GPT-5 Codex
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Qwen: Qwen3.5 397B A17B
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3 / 44
Logic Puzzlereasoning
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
GPT-5 Codex
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Qwen: Qwen3.5 397B A17B
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4 / 44
Stochastic Consistency Testanalysis
Tests an AI's randomness and creativity
GPT-5 Codex
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Qwen: Qwen3.5 397B A17B
Here are 5 jokes:
- Why did the bicycle fall over? Because it was two-tired.
- What do you call a fish wearing a bowtie? Sofishticated.
- Why can't you give Elsa a balloon? Because she will let it go.
- What do you call a lazy kangaroo? A pouch potato.
- Why did the math book look sad? Because it had too many problems.
How many are unique? All 5 are unique (none of them are duplicates of each other).
Vote
5 / 44
SVG Layout Challengeimage generation
Tests an AI's ability to generate vector graphics
GPT-5 Codex
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Qwen: Qwen3.5 397B A17B
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6 / 44
Xbox Controller SVG Artimage generation
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
GPT-5 Codex
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Qwen: Qwen3.5 397B A17B
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7 / 44
Generate a Stand-Up Routineconversation
Tests an AI's humor and creative writing ability
GPT-5 Codex
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Qwen: Qwen3.5 397B A17B
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8 / 44
Realistic AI Interviewconversation
Tests an AI's ability to simulate personalities and predict future trends
GPT-5 Codex
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Qwen: Qwen3.5 397B A17B
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9 / 44
Satirical Fake News Headlineconversation
Tests an AI's humor and understanding of current events
GPT-5 Codex
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Qwen: Qwen3.5 397B A17B
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10 / 44
Character Voice Testconversation
Tests an AI's ability to write in distinct character voices
GPT-5 Codex
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Qwen: Qwen3.5 397B A17B
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11 / 44
Minimalist Landing Pageweb design
Tests an AI's ability to generate a complete, working landing page
GPT-5 Codex
Qwen: Qwen3.5 397B A17B
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12 / 44
Pokémon Battle UI Recreationweb design
Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.
GPT-5 Codex
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Qwen: Qwen3.5 397B A17B
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12 of 44