OpenAI ChatGPT 5.4 nano

OpenAI ChatGPT 5.4 nano, the smallest and fastest 5.4-family model.

OpenAI ChatGPT 5.4 nano, the smallest and fastest 5.4-family model. Ideal for tight-loop tools (classification, routing, formatting) and high-volume chat. Ultra-low latency and the lowest per-token price in the family.