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OpenAI o4 Mini HighvsClaude Opus 4.5

Comparing across 28 challenges

2 Models Selected
Comparison Active
OpenAI o4 Mini High

OpenAI o4 Mini High

openaiApr 2025
A
Not disclosed
200,000k
medium
conversationreasoningcode generation+1
Claude Opus 4.5

Claude Opus 4.5

anthropicNov 2025
B
xlarge
conversationreasoningcode generation+2

Battle Arena

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