[OpenAI Latest API] What is ChatGPT 4.1 (GPT-4.1)? Explaining the features, usage, and prices!

OpenAI's latest API model family GPT-4.1 is profoundly changing the way we live and work. It is not just a technological advancement, GPT-4.1 and its derivative models have become a key force in changing our lifestyle, and its importance is increasingly prominent.

However, "What exactly is GPT-4.1?" "How does it help our work?" Many people still have questions about this.

This article will explore the core concepts, practical application cases, performance and price of the GPT-4.1 family in depth, helping you to fully understand the impact of the latest OpenAI models on work and development.

Table of contents

GPT-4.1: OpenAI's latest API model family [ChatGPT model]

GPT-4.5 preview version is disabled

How to use Azure AI Foundry

How to use GitHub Copilot

Positioning of GPT-4.1 family

GPT-4.1

GPT-4.1 mini

GPT-4.1 nano

Performance of the GPT-4.1 family

Significantly improved coding capabilities

Improved command compliance capabilities

Evolution of long text context processing capabilities (maximum 1 million tokens)

Vision (image understanding) ability

Application in the development of agents

GPT-4.1 and Responses API build advanced arsenals

Pricing for GPT-4.1 family

How to use the GPT-4.1 family

1. API usage

2. Playground

Real-world application cases

Coding Field

Directives follow the field

Long text context field

Summarize

GPT-4.1: OpenAI's latest API model family [ChatGPT model]

OpenAI has released a new family of GPT models, which provide services through APIs, including GPT-4.1 , GPT-4.1 mini and OpenAI's first nano-model , GPT-4.1 nano .

Compared with previous flagship models GPT-4o and GPT-4o mini, these new models have achieved significant performance improvements in coding capabilities and instruction compliance .

Additionally, they support oversized context windows with up to 1 million tokens , significantly improving the ability to understand long texts. The knowledge deadline is updated to June 2024 .

GPT-4.5 preview version is disabled

The GPT-4.1 family released this time is only provided through the API . In ChatGPT, many improvement points of GPT-4.1 have been gradually integrated into the latest GPT-4o and will continue to be updated.

Since GPT-4.1 can provide comparable or even better performance with GPT-4.5 preview version at lower cost and lower latency, the GPT-4.5 preview version will cease API service on July 14, 2025 . (Developers will receive a 3-month transition period.)

The experience gained in GPT-4.5 and its performance in creativity, writing quality, sense of humor and nuance will be applied to future API models.

The API of GPT-4.1 has been applied to the following services:

Please refer to the following article for API publishing methods:

[Related Articles] What is ChatGPT API (OpenAI API)? Detailed explanation of usage methods, pricing system and application cases!

Availability announcement reference: Microsoft

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