GPT OSS 20B vs Mistral Large 2

Compare GPT OSS 20B by OpenAI against Mistral Large 2 by Mistral AI, in 1 community votes, gpt oss 20b wins 100% of head-to-head duels, context windows of 131K vs 128K, tested across 18 shared challenges. Updated February 2026.

In 1 community votes, GPT OSS 20B wins 100% of head-to-head duels. Based on blind community voting from the RIVAL open dataset of 1+ human preference judgments for this pair.

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