xAI: Grok 4 Fast (free) vs Claude Opus 4.5 - AI Model Comparison
Compare capabilities and responses between xAI: Grok 4 Fast (free) by xai and Claude Opus 4.5 by anthropic.
Common Challenges (35)
- Estimate Complexity: Tests an AI's ability to make educated estimates based on technical knowledge...
- AI Board Game Logic: Tests an AI's ability to understand game rules and strategy...
- Logic Puzzle: Tests an AI's ability to solve a simple but potentially confusing logic puzzle...
- Math Misconception Test: Tests an AI's understanding of number representation...
- Stochastic Consistency Test: Tests an AI's randomness and creativity...
- And 30 more challenges...
About xAI: Grok 4 Fast (free)
Provider: xai
Release Date: 2025-09-19
Context Window: 2000000
About Claude Opus 4.5
Provider: anthropic
Release Date: 2025-11-24
Context Window:
xAI: Grok 4 Fast (free)vsClaude Opus 4.5
Comparing across 35 challenges
conversationanalysiscode generation
conversationreasoningcode generation+2
Battle Arena
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