GPT-5 Codex
Nothing here. The model returned empty. We stared at it for a while.
GPT-5 Codex vs Inception: Mercury 2
Compare GPT-5 Codex by OpenAI against Inception: Mercury 2 by Inception, tested across 49 shared challenges. Updated March 2026.
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GPT-5 CodexvsInception: Mercury 2
44 fights queued
Why GPT-5 Codex?
Dead even. This one’s a coin flip.
Why Inception: Mercury 2?
5 months newerMar 2026
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GPT-5 CodexInception: Mercury 2
12 / 44
Estimate Complexityreasoning
Tests an AI's ability to make educated estimates based on technical knowledge
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2 / 44
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
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3 / 44
Logic Puzzlereasoning
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
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4 / 44
Stochastic Consistency Testanalysis
Tests an AI's randomness and creativity
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5 / 44
SVG Layout Challengeimage generation
Tests an AI's ability to generate vector graphics
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6 / 44
Xbox Controller SVG Artimage generation
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
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7 / 44
Generate a Stand-Up Routineconversation
Tests an AI's humor and creative writing ability
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8 / 44
Realistic AI Interviewconversation
Tests an AI's ability to simulate personalities and predict future trends
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9 / 44
Satirical Fake News Headlineconversation
Tests an AI's humor and understanding of current events
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10 / 44
Character Voice Testconversation
Tests an AI's ability to write in distinct character voices
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11 / 44
Minimalist Landing Pageweb design
Tests an AI's ability to generate a complete, working landing page
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12 / 44
Pokémon Battle UI Recreationweb design
Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.
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