Claude Opus 4.5
No content available for this output.
Claude Opus 4.5 vs Grok 4.1 Fast
Compare Claude Opus 4.5 by Anthropic against Grok 4.1 Fast by xAI, tested across 53 shared challenges. Updated February 2026.
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Claude Opus 4.5vsGrok 4.1 Fast
48 challenges
Favorites
Claude Opus 4.5Grok 4.1 Fast
12 / 48
Estimate Complexityreasoning
Tests an AI's ability to make educated estimates based on technical knowledge
Grok 4.1 Fast
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Vote
2 / 48
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
Claude Opus 4.5
No content available for this output.
Grok 4.1 Fast
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.
Grok 4.1 Fast
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.
Grok 4.1 Fast
No content available for this output.
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5 / 48
Stochastic Consistency Testanalysis
Tests an AI's randomness and creativity
Claude Opus 4.5
No content available for this output.
Grok 4.1 Fast
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
No content available for this output.
Grok 4.1 Fast
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
No content available for this output.
Grok 4.1 Fast
No content available for this output.
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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.
Grok 4.1 Fast
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.
Grok 4.1 Fast
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.
Grok 4.1 Fast
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.
Grok 4.1 Fast
No content available for this output.
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12 / 48
Minimalist Landing Pageweb design
Tests an AI's ability to generate a complete, working landing page
Claude Opus 4.5
Grok 4.1 Fast
Vote
12 of 48