Intelligence index
Outperforms 63% of compared models

GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy in high-stakes use cases. It supports test-time routing features and advanced prompt understanding, including user-specified intent like "think hard about this." Improvements include reductions in hallucination, sycophancy, and better performance in coding, writing, and health-related tasks.
Outperforms 63% of compared models
Outperforms 37% of compared models
Elo scores and win rates across design and agent tasks.
1185Elo
Win rate 64.1%
1138Elo
Win rate 49%
1221Elo
Win rate 60.5%
1185Elo
Win rate 59.3%
1174Elo
Win rate 57.4%
1184Elo
Win rate 53.7%
1166Elo
Win rate 54.5%
1053Elo
Win rate 41.3%