Claude Opus 4.5
No content available for this output.
Claude Opus 4.5 vs GPT OSS 120B
Compare Claude Opus 4.5 by Anthropic against GPT OSS 120B by OpenAI, tested across 48 shared challenges. Updated February 2026.
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Claude Opus 4.5vsGPT OSS 120B
48 challenges
Why Claude Opus 4.5?
4 months newerNov 2025
Why GPT OSS 120B?
No standout advantages
Favorites
Claude Opus 4.5GPT OSS 120B
12 / 48
Estimate Complexityreasoning
Tests an AI's ability to make educated estimates based on technical knowledge
GPT OSS 120B
No content available for this output.
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2 / 48
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
Claude Opus 4.5
GPT OSS 120B
No content available for this output.
Vote
3 / 48
Logic Puzzlereasoning
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
Claude Opus 4.5
No content available for this output.
GPT OSS 120B
No content available for this output.
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4 / 48
Math Misconception Testreasoning
Tests an AI's understanding of number representation
Claude Opus 4.5
No content available for this output.
GPT OSS 120B
No content available for this output.
Vote
5 / 48
Stochastic Consistency Testanalysis
Tests an AI's randomness and creativity
Claude Opus 4.5
Here are 5 jokes:
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Why don't scientists trust atoms? Because they make up everything.
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What do you call a fish without eyes? A fsh.
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Why did the scarecrow win an award? Because he was outstanding in his field.
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I told my wife she was drawing her eyebrows too high. She looked surprised.
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What do you call a bear with no teeth? A gummy bear.
All 5 are unique - each joke has a different setup, punchline, and subject matter (atoms, fish, scarecrow, eyebrows, bear).
GPT OSS 120B
No content available for this output.
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6 / 48
SVG Layout Challengeimage generation
Tests an AI's ability to generate vector graphics
Claude Opus 4.5
GPT OSS 120B
No content available for this output.
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7 / 48
Xbox Controller SVG Artimage generation
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
Claude Opus 4.5
GPT OSS 120B
No content available for this output.
Vote
8 / 48
Generate a Stand-Up Routineconversation
Tests an AI's humor and creative writing ability
Claude Opus 4.5
No content available for this output.
GPT OSS 120B
No content available for this output.
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9 / 48
Realistic AI Interviewconversation
Tests an AI's ability to simulate personalities and predict future trends
Claude Opus 4.5
No content available for this output.
GPT OSS 120B
No content available for this output.
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10 / 48
Satirical Fake News Headlineconversation
Tests an AI's humor and understanding of current events
Claude Opus 4.5
No content available for this output.
GPT OSS 120B
No content available for this output.
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11 / 48
Character Voice Testconversation
Tests an AI's ability to write in distinct character voices
Claude Opus 4.5
No content available for this output.
GPT OSS 120B
No content available for this output.
Vote
12 / 48
Minimalist Landing Pageweb design
Tests an AI's ability to generate a complete, working landing page
Claude Opus 4.5
GPT OSS 120B
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12 of 48