Intelligence index
Outperforms 38% of compared models

GPT-4.1 is a flagship large language model optimized for advanced instruction following, real-world software engineering, and long-context reasoning. It supports a 1 million token context window and outperforms GPT-4o and GPT-4.5 across coding (54.6% SWE-bench Verified), instruction compliance (87.4% IFEval), and multimodal understanding benchmarks. It is tuned for precise code diffs, agent reliability, and high recall in large document contexts, making it ideal for agents, IDE tooling, and enterprise knowledge retrieval.
Outperforms 38% of compared models
Elo scores and win rates across design and agent tasks.
1104Elo
Win rate 59.5%
1078Elo
Win rate 59.1%
995Elo
Win rate 49.7%
1024Elo
Win rate 50.9%
1037Elo
Win rate 52.3%
847Elo
Win rate 30.9%