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gpt-5-nano

16K max output

chat

Pricing

Per 1M tokens

Input

$0.05

Cached input

$0.0050

Output

$0.40

Cache write

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Modalities

Input

text

Output

text

Features

Streaming

Function calling

Vision

Reasoning

JSON mode

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OpenAI

GPT 5 Nano

Input

$0.05/M

Output

$0.40/M

Tool Calling