Home/Head-to-Head/Claude Sonnet 4.5 vs GPT-5.1 (Thinking)

Claude Sonnet 4.5 vs GPT-5.1 (Thinking)

24 head-to-head matchups on identical queries

Claude Sonnet 4.5
8.40
2 Wins 14 Ties 8 Losses
VS
GPT-5.1 (Thinking)
8.37
8 Wins 14 Ties 2 Losses
Metric-by-Metric Comparison