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Claude Opus 4vsGPT-5.1-Codex

Comparing across 21 challenges

2 Models Selected
Comparison Active
Claude Opus 4

Claude Opus 4

anthropicMay 2025
A
Not disclosed
200,000k
xlarge
conversationreasoningcode generation+3
GPT-5.1-Codex

GPT-5.1-Codex

openaiNov 2025
B
400,000k
xlarge
conversationreasoningcode generation+1

Battle Arena

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