gpt-4.1-nano

Name: gpt-4.1-nano
Author: Azure AI Foundry

deprecatedproprietary

- Text and image input - Text output - Chat completions API - Responses API - Streaming - Function calling - Structured outputs (chat completions)

Intelligence

Speed

Context

1.0M

Max output

33K

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

ProviderAzure AI Foundry

CreatorOpenAI

Familygpt-4.1

Licenseproprietary

Statusdeprecated

Typechat

Input modalitiestext, image

Output modalitiestext

Open weightNo

Parameters—

Architecture—

Context window1.0M tokens

Max input—

Max output33K tokens

Reasoning tokens—

Knowledge cutoff2024-05-31

Release date2025-04-14

Deprecation date2026-04-22

Sourceofficial

Tools

Function Callingfunction_calling

Call external functions and APIs

Pricing

Fine-tuning

	Training	Input	Cached input	Output
Standard	$1.5	$0.2	$0.05	$0.8
Batch	$1.5	$0.1	$0.025	$0.4

Family Comparison: gpt-4.1

Model	Caps	Perf	Speed	Context	Max out
gpt-4.1-mini	TJJMSBF	—	—	1.0M	33K
gpt-4.1-nano	TJJMSBF	—	—	1.0M	33K
GPT-4.1 series	TJJMSBF	—	—	1.0M	33K

API

GET/v1/models/azure/gpt-4.1-nano

gpt-4.1-nano

deprecated

- Text and image input - Text output - Chat completions API - Responses API - Streaming - Function calling - Structured outputs (chat completions)

Changes · 4 entries

gpt-4.1-nanoupdateca7a400Nov 2, 2026, 03:02 AM

capabilitiestool callyesstructured outputyesjson modeyes

modalitiesinput["text"]→["text","image"]

description- Text and image input - Text output - Chat completions A...

knowledge_cutoff2024-05-31

context_window1047576

max_output_tokens32768

tagline- Text and image input - Text output - Chat completions A...

tools["function_calling"]

gpt-4.1-nanoupdate73d11c6May 18, 2026, 03:39 AM

description- Text and image input - Text output - Chat completions A...

knowledge_cutoff2024-05-31

context_window1047576

max_output_tokens32768

tagline- Text and image input - Text output - Chat completions A...

tools["function_calling"]

gpt-4.1-nanoupdate2b100acMar 23, 2026, 05:30 AM

model_typechat

gpt-4.1-nanocreate7f5c66fMar 21, 2026, 05:16 AM