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Human-AI Co-writing on CoAuthor (Overall)

19.61HAR (%)GPT-5.1
6.48529.892613.316.7074May 22, 2026

Evaluation results

MethodLinks
GPT-5.1Level=L22026.0519.6110.5
Gemini-2.5-ProLevel=L22026.0517.899.39
GPT-5.1Level=L12026.0517.5911.28
Gemini-2.5-FlashLevel=L22026.0516.0510.24
Gemini-2.5-ProLevel=L12026.0514.179.17
Gemini-2.5-FlashLevel=L12026.0513.399.68
DeepSeek-V3.2Level=L22026.0510.379.97
DeepSeek-V3.2Level=L12026.056.9910.18