GPT-5.4

OpenAI's general-purpose frontier model with a 1.05M token context window for handling large documents and complex reasoning tasks.

Strengths

Handles extended contexts effectively and maintains strong performance across general reasoning, writing, coding, and analysis workloads at scale.

Best for

Processing large documents, long-form analysis, and complex multi-step reasoning where context window size is a primary constraint.

Limitations

The GPT-5.4 Pro variant offers enhanced reasoning capabilities for the most complex tasks; for batch workloads, the batch-optimized version provides better efficiency.