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AI model · OpenAI

GPT-4.1 Nano

For tasks that demand low latency, GPT‑4.1 nano is the fastest and cheapest model in the GPT-4.1 series. It delivers exceptional performance at a small size with its 1 million...

The figures

Made by
OpenAI
Model ID
openai/gpt-4.1-nano
Input
$0.1 per million tokens
Output
$0.4 per million tokens
Context window
1.05M tokens
Longest answer
33K tokens
Takes in
image, text, file
Gives back
text
Reasoning
No
Tool calling
Yes
Reads images
Yes
Open weights
No
Released
14 Apr 2025

Read on 3 Oct 2026.