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GPT-4.5vsGPT OSS 20B

Comparing across 25 challenges

2 Models Selected
Comparison Active
GPT-4.5

GPT-4.5

openaiFeb 2025
A
Not disclosed
128,000k
xlarge
conversationreasoningcode generation+2
GPT OSS 20B

GPT OSS 20B

openaiAug 2025
B
21B total (3.6B active per forward pass)
131,072k
large
conversationreasoningcode generation+4

Battle Arena

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