GPT-5 Nano (batch)

GPT-5 Nano is OpenAI's smallest general-purpose model in the GPT-5 family, optimized for speed and low latency with a 400k token context window.

Strengths

Delivers rapid inference and minimal computational overhead, making it suitable for real-time applications where response speed is critical.

Best for

Developer tools, rapid interactions, and scenarios where ultra-low latency takes priority over reasoning depth.

Limitations

Reasoning capability and task complexity are limited compared to larger GPT-5 variants like Mini and Pro; the batch endpoint introduces latency compared to real-time inference.