OpenAI: GPT-4.1 Nano

Name: OpenAI: GPT-4.1 Nano
Author: OpenRouter

deprecatedproprietary

For tasks that demand low latency, GPT‑4.1 nano is the fastest and cheapest model in the GPT-4.1 series.

Intelligence

Speed

Context

1.0M

Max output

943K

Input price

$0.1/1M tokens

Output price

$0.4/1M tokens

Capabilities

Show unsupported (2)

Reasoning & Interaction

Tool Calling

Output Control

Structured Output

JSON Mode

Infrastructure

Streaming

Batch Processing

Fine-tuning

Details

Model IDopenai/gpt-4.1-nano

ProviderOpenRouter

CreatorOpenAI

Familygpt-4.1

Licenseproprietary

Statusdeprecated

Typechat

Input modalitiesimage, text

Output modalitiestext

Open weightNo

Parameters—

Architecture—

Context window1.0M tokens

Max input—

Max output943K tokens

Reasoning tokens—

Knowledge cutoff2024-06

Release date2025-04-14

Deprecation date2026-04-22

Sourceofficial

Tools

Function Callingfunction_calling

Call external functions and APIs

Pricing

Input

$0.1

Output

$0.4

Cache write

—

Cache read

$0.03

Batch in

—

Batch out

—

Family Comparison: gpt-4.1

Model	Caps	Perf	Speed	Context	Max out	Pricing
OpenAI: GPT-4.1 Nano (batch)	TJJM	—	—	1.0M	33K	$0.05$0.2
OpenAI: GPT-4.1 Nano	TJJMSBF	—	—	1.0M	943K	$0.1$0.4
OpenAI: GPT-4.1 Mini (batch)	TJJM	—	—	1.0M	33K	$0.2$0.8
OpenAI: GPT-4.1 Mini	TJJMSBF	—	—	1.0M	33K	$0.4$1.6
OpenAI: GPT-4.1 (batch)	TJJM	—	—	1.0M	33K	$1$4
OpenAI: GPT-4.1	TJJMSBF	—	—	1.0M	33K	$2$8

API

GET/v1/models/openrouter/openai/gpt-4.1-nano