GPT-5 Nano
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GPT-5 Nano vs OpenAI o3
Compare GPT-5 Nano and OpenAI o3, both from OpenAI, tested across 44 shared challenges. Updated February 2026.
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GPT-5 NanovsOpenAI o3
44 challenges
Why GPT-5 Nano?
4 months newerAug 2025
Why OpenAI o3?
Leads 1 of 1 benchmarks
Stronger on SWE-bench Verified69.1% vs 54.7%
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GPT-5 NanoOpenAI o3
12 / 44
Estimate Complexityreasoning
Tests an AI's ability to make educated estimates based on technical knowledge
OpenAI o3
No content available for this output.
Vote
2 / 44
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
GPT-5 Nano
No content available for this output.
OpenAI o3
No content available for this output.
Vote
3 / 44
Logic Puzzlereasoning
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
GPT-5 Nano
No content available for this output.
OpenAI o3
No content available for this output.
Vote
4 / 44
Math Misconception Testreasoning
Tests an AI's understanding of number representation
GPT-5 Nano
No content available for this output.
OpenAI o3
No content available for this output.
Vote
5 / 44
Stochastic Consistency Testanalysis
Tests an AI's randomness and creativity
GPT-5 Nano
No content available for this output.
OpenAI o3
No content available for this output.
Vote
6 / 44
SVG Layout Challengeimage generation
Tests an AI's ability to generate vector graphics
GPT-5 Nano
No content available for this output.
OpenAI o3
No content available for this output.
Vote
7 / 44
Xbox Controller SVG Artimage generation
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
GPT-5 Nano
No content available for this output.
OpenAI o3
No content available for this output.
Vote
8 / 44
Generate a Stand-Up Routineconversation
Tests an AI's humor and creative writing ability
GPT-5 Nano
No content available for this output.
OpenAI o3
No content available for this output.
Vote
9 / 44
Realistic AI Interviewconversation
Tests an AI's ability to simulate personalities and predict future trends
GPT-5 Nano
No content available for this output.
OpenAI o3
No content available for this output.
Vote
10 / 44
Satirical Fake News Headlineconversation
Tests an AI's humor and understanding of current events
GPT-5 Nano
No content available for this output.
OpenAI o3
No content available for this output.
Vote
11 / 44
Character Voice Testconversation
Tests an AI's ability to write in distinct character voices
GPT-5 Nano
No content available for this output.
OpenAI o3
No content available for this output.
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12 / 44
Minimalist Landing Pageweb design
Tests an AI's ability to generate a complete, working landing page
GPT-5 Nano
OpenAI o3
Vote
12 of 44