Nano

ChatGPT-5 Nano

Fastest, most cost-efficient version of ChatGPT-5

REASONING

Average

SPEED

Very Fast

INPUT

Text, image

OUTPUT

Text

GPT-5 Nano is our fastest, cheapest version of GPT-5. It's great for summarization and classification tasks, offering excellent speed and cost efficiency for well-defined use cases.

Learn more about how to use ChatGPT-5 Nano in our documentation.

400K token context window

Process and analyze extensive documents and conversations with enhanced context window.

128K max output tokens

Generate comprehensive responses and content with substantial output capacity.

May 31, 2024 knowledge cutoff

Access information and insights with a recent knowledge base.

Reasoning token support

Advanced reasoning capabilities with specialized token processing.

Features

Streaming

Supported

Function calling

Supported

Structured outputs

Supported

Fine-tuning

Supported

Web search

Not supported

Image generation

Supported

Experience ChatGPT-5 Nano for free at orbisgpt.com - No limits, no cost.