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Ask and write

GPT-5 Nano

Smallest and fastest GPT-5 model optimized for low-cost text generation and lightweight tasks.

Made by OpenAI2 creditsper message Free
What it needs

Opens the Agent studio with GPT-5 Nano ready to use. You will need a free account to run it.

GPT-5 Nano sample output
Sample output
GPT-5 Nano sample output

What GPT-5 Nano makes, what it needs and what you get

What it makes

Ask and write

Answers questions and writes text in a conversation.

What you need

  • Your message

What you get

A written reply

About GPT-5 Nano

GPT-5 Nano is a small model in the GPT-5 line. Enter a message and the model returns text. It is made for lightweight text tasks.

The Prompt box (the hint reads Enter Your Message) is the one field you fill in. Write your request there as plain text. The answer comes back as text.

GPT-5 Chat and GPT-5 Mini use the same box and return text too. GPT-5 Nano costs about 2500 credits per run.

What it does well

Small GPT-5 model

GPT-5 Nano is a small model in the GPT-5 line.

Lightweight text tasks

It is made for lightweight text generation.

Text answers

It answers your message with text.

How to use GPT-5 Nano

How It Works
01

Open GPT-5 Nano

Select GPT-5 Nano from the text generation models.

02

Write your request

Type it into the Prompt box.

03

Get the text back

Send the request and read the reply.

Tip Write your whole request in the Prompt box. Each run costs about 2500 credits.

Good for

Writing a caption

Describe your photo or post and ask for a short caption.

Short notes

Describe what you need and ask for a short note.

Simple questions

Type a question and read the answer.

Questions

Quick answers to help you get the most out of GPT-5 Nano in FunAI Studio.

1. What do I need to provide?
2. What do I get back?
3. How much does GPT-5 Nano cost?