GPT-5 Nano

openai

GPT-5 nano is a high throughput model that excels at simple instruction or classification tasks.

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Capabilities

Tool Use

File Input

Extended Thinking

Image Input

Technical Specifications

Context Window

400,000 tokens

Max Output

128,000 tokens

Input Cost

$0.05 per 1M tokens

Output Cost

$0.40 per 1M tokens

File Input Limit

20 files

Files in Assistant Messages

Yes

Availability

No account required

$0 per month

Also available in these plans

Free
Free
Plus
$20/mo
Pro
$100/mo
Super
$200/mo