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DeepSeek R1vsClaude Sonnet 4.5

Comparing across 20 challenges

2 Models Selected
Comparison Active
DeepSeek R1

DeepSeek R1

deepseekFeb 2025
A
671B total (37B active MoE)
128,000k
large
conversationreasoningcode generation+1
Claude Sonnet 4.5

Claude Sonnet 4.5

anthropicSep 2025
B
200,000k
large
conversationreasoningcode generation+2

Battle Arena

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