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What is GPT‑5-Codex?

GPT-5-Codex is a refined version of GPT-5 designed specifically for agentic coding within Codex, which focuses on practical software engineering tasks such as building complete projects from scratch, adding features and tests, debugging issues, executing large-scale refactoring, and conducting code reviews. This latest iteration of Codex boasts improved speed and reliability, offering enhanced real-time performance across a variety of development environments, such as terminal/CLI, IDE extensions, web platforms, GitHub, and mobile applications. For tasks related to cloud computing and code evaluations, GPT-5-Codex serves as the default model; nonetheless, developers can also leverage it locally via Codex CLI or IDE extensions if they prefer. The model intelligently adjusts the “reasoning time” it allocates based on task complexity, delivering prompt responses for simpler, well-defined tasks while investing more effort into complex challenges like refactors and significant feature implementations. Furthermore, the upgraded code review functionalities assist in spotting critical bugs before they reach deployment, significantly enhancing the reliability of the software development process. As a result of these innovations, developers can anticipate a more streamlined workflow, which ultimately translates to superior software quality and outcomes that meet rigorous standards. This evolution in coding assistance reflects a growing trend toward smart tools that amplify developer productivity and foster creativity.

What is Devin?

Devin serves as a cutting-edge AI software development assistant designed to collaborate with engineering teams, aiming to streamline and improve the coding workflow. It plays a vital role in a variety of tasks, including repository creation, coding, debugging, and migrations, and can operate autonomously or alongside human developers. Over time, Devin enhances its performance by learning from the examples it encounters. The adoption of Devin has led to significant savings in both time and costs on large-scale projects, as demonstrated by its deployment at Nubank, where it accelerated migration processes by 8 to 12 times and reduced expenses by over 20 times. Furthermore, Devin is proficient in code refactoring and automating mundane engineering tasks, making it an essential resource for developers seeking to enhance their productivity. Its capacity for continuous learning and adaptation guarantees that it remains a crucial component in the rapidly changing world of software development, driving innovation and efficiency. As the industry evolves, tools like Devin will likely set new standards for collaboration and performance in the tech sector.

Media

Media

Integrations Supported

C
C#
C++
Devin Desktop
GitHub
Go
HTML
JavaScript
Kotlin
PHP
Python
R
SQL
TypeScript
F#
Laravel
OpenAI Codex
Visual Basic

Integrations Supported

C
C#
C++
Devin Desktop
GitHub
Go
HTML
JavaScript
Kotlin
PHP
Python
R
SQL
TypeScript
Claude Opus 5.5
OpenClaw

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided
Free Version

Pricing Information

$20/month
Pro: $20/month
Max: $200/month
Free Version
Free Trial Offered?

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

openai.com/index/introducing-upgrades-to-codex/

Company Facts

Organization Name

Cognition AI

Date Founded

2023

Company Location

United States

Company Website

devin.ai/

Categories and Features

Agentic AI

Not specified

AI Coding Agents

Not specified

AI Coding Models

Not specified

AI Models

Not specified

Categories and Features

Agentic AI

Not specified

AI Agent Builders

Not specified

AI Agents

Not specified

AI Code Generators

Not specified

AI Code Refactoring

Not specified

AI Coding Agents

Not specified

AI Coding Assistants

Not specified

Vibe Coding

Not specified

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