GPT-5.4 Nano

GPT-5.4 Nano is OpenAI's lightweight variant from the GPT-5.4 series, optimized for batch processing with a 400k token context window.

Strengths

It balances efficiency and capability as a smaller model in the GPT-5.4 generation, designed to handle batch workloads at lower resource consumption than its larger siblings.

Best for

High-volume batch processing tasks where speed and resource efficiency matter more than frontier reasoning capabilities.

Limitations

As a lightweight variant, it trades off reasoning depth and capability compared to GPT-5.4 Pro or the full GPT-5.4, and is only available for batch processing (not real-time inference).