GPT-5 Codex
No content available for this output.
GPT-5 Codex vs o3 Mini
Compare GPT-5 Codex and o3 Mini, both from OpenAI, tested across 39 shared challenges. Updated February 2026.
FAQ
Loading share button...
GPT-5 Codexvso3 Mini
34 challenges
Why GPT-5 Codex?
9 months newerSep 2025
Why o3 Mini?
No standout advantages
Favorites
GPT-5 Codexo3 Mini
12 / 34
Estimate Complexityreasoning
Tests an AI's ability to make educated estimates based on technical knowledge
o3 Mini
No content available for this output.
Vote
2 / 34
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
GPT-5 Codex
No content available for this output.
o3 Mini
No content available for this output.
Vote
3 / 34
Logic Puzzlereasoning
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
GPT-5 Codex
No content available for this output.
o3 Mini
No content available for this output.
Vote
4 / 34
Math Misconception Testreasoning
Tests an AI's understanding of number representation
GPT-5 Codex
No content available for this output.
o3 Mini
No content available for this output.
Vote
5 / 34
Stochastic Consistency Testanalysis
Tests an AI's randomness and creativity
GPT-5 Codex
No content available for this output.
o3 Mini
-
Why did the math book look sad?
Because it had too many problems. -
What do you call an alligator in a vest?
An investigator. -
What did the zero say to the eight?
Nice belt! -
Why did the bicycle fall over?
Because it was two-tired. -
How does a penguin build its house?
Igloos it together.
Each of these five jokes is unique, so there are 5 unique jokes.
Vote
6 / 34
SVG Layout Challengeimage generation
Tests an AI's ability to generate vector graphics
GPT-5 Codex
No content available for this output.
o3 Mini
No content available for this output.
Vote
7 / 34
Xbox Controller SVG Artimage generation
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
GPT-5 Codex
No content available for this output.
o3 Mini
No content available for this output.
Vote
8 / 34
Generate a Stand-Up Routineconversation
Tests an AI's humor and creative writing ability
GPT-5 Codex
No content available for this output.
o3 Mini
No content available for this output.
Vote
9 / 34
Realistic AI Interviewconversation
Tests an AI's ability to simulate personalities and predict future trends
GPT-5 Codex
No content available for this output.
o3 Mini
No content available for this output.
Vote
10 / 34
Satirical Fake News Headlineconversation
Tests an AI's humor and understanding of current events
GPT-5 Codex
No content available for this output.
o3 Mini
No content available for this output.
Vote
11 / 34
Character Voice Testconversation
Tests an AI's ability to write in distinct character voices
GPT-5 Codex
No content available for this output.
o3 Mini
No content available for this output.
Vote
Sponsored
12 / 34
Minimalist Landing Pageweb design
Tests an AI's ability to generate a complete, working landing page
GPT-5 Codex
o3 Mini
Vote
12 of 34