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OpenAI · API model

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...

Context
1.05M
Input / 1M
$0.1
Output / 1M
$0.4
Released
Apr 14, 2025
Specifications

GPT-4.1 Nano specs

Provider
OpenAI
Type
API model
Model ID
openai/gpt-4.1-nano
Context window
1,047,576 tokens1.05M
Input price
$0.1per 1M input tokens
Output price
$0.4per 1M output tokens
Accepts
file, image, text
Produces
text
Released
Apr 14, 2025
Source
OpenRouter
Overview

About GPT-4.1 Nano

GPT-4.1 Nano is an API model from OpenAI, released on Apr 14, 2025, with a context window of 1,047,576 tokens, pricing of $0.1 per million input tokens and $0.4 per million output tokens. It accepts file, image, text input and produces text output.

At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.0014.

Specs are sourced from OpenRouter and were last checked on Oct 30, 2026. Always confirm current pricing and limits with the provider before production use.

Tool callingStructured outputsJSON mode
FAQ

GPT-4.1 Nano questions

What is the context window of GPT-4.1 Nano?

GPT-4.1 Nano supports a context window of 1,047,576 tokens.

How much does GPT-4.1 Nano cost?

GPT-4.1 Nano is listed at $0.1 per million input tokens and $0.4 per million output tokens on OpenRouter.

When was GPT-4.1 Nano released?

GPT-4.1 Nano was published on Apr 14, 2025.

What inputs does GPT-4.1 Nano accept?

GPT-4.1 Nano accepts file, image, text input and produces text output.