GPT-5.4

GPT-5.4 is OpenAI's general-purpose frontier model with a 1.05M token context window for handling large documents and complex tasks.

Strengths

Handles long-context reasoning and analysis across diverse workloads, with the full capability of the GPT-5.4 series.

Best for

Complex reasoning, document analysis, and general tasks where extended context and model capability matter more than latency or cost optimization.

Limitations

Larger than the Mini and Nano variants in the same series; for batch-only workflows, use GPT-5.4 (batch) instead.