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What is GPT-5.1-Codex-Max?

The GPT-5.1-Codex-Max stands as the pinnacle of the GPT-5.1-Codex series, meticulously designed to excel in software development and intricate coding challenges. It builds upon the core GPT-5.1 architecture by prioritizing broader goals such as the complete crafting of projects, extensive code refactoring, and the autonomous handling of bugs and testing workflows. With its innovative adaptive reasoning capabilities, this model can more effectively manage computational resources, tailoring its performance to the complexity of the tasks it encounters, which ultimately improves the quality of the results produced. Additionally, it supports a wide array of tools, including integrated development environments, version control platforms, and CI/CD pipelines, thereby offering remarkable accuracy in code reviews, debugging, and autonomous execution when compared to more general models. Beyond Max, there are lighter alternatives like Codex-Mini that are designed for those seeking cost-effective or scalable solutions. The entire suite of GPT-5.1-Codex models is readily available through developer previews and integrations, such as those provided by GitHub Copilot, making it a flexible option for developers. This extensive variety of choices ensures that users can select a model that aligns perfectly with their unique needs and project specifications, promoting efficiency and innovation in software development. The adaptability and comprehensive features of this suite position it as a crucial asset for modern developers navigating the complexities of coding.

What is CodeX?

CodexPro is an innovative coding assessment platform aimed at hiring professionals and educational institutions alike. Featuring a user-friendly interface, CodexPro streamlines the evaluation process, allowing both assessors and candidates to navigate and assess coding abilities with ease and efficiency. Beyond coding evaluations, CodexPro also includes tests for English proficiency, Data Interpretation, Arithmetic, and Logical Reasoning, which are vital skills in today’s job market. This all-encompassing suite guarantees a comprehensive assessment across various areas, offering a well-rounded perspective on an individual's skills and knowledge. What sets CodexPro apart is its commitment to accuracy; precise evaluations are essential for making informed hiring decisions or monitoring student progress. The platform provides relevant coding challenges, sophisticated analytics, and detailed reports that deliver valuable insights into performance, highlighting strengths and pinpointing areas needing improvement. Whether it's for filling technical positions or assessing academic achievements, CodexPro equips users with powerful features and in-depth analytics to facilitate informed, data-driven choices. Additionally, the platform’s ease of use fosters a seamless experience, encouraging more candidates to engage in the assessment process effectively.

Media

Media

Integrations Supported

Codex CLI
Elixir
F#
GPT-5.2
GPT-5.2 Instant
GPT-5.2 Thinking
GPT-5.4 Pro
GPT-5.5
GPT-5.5 Pro
HTML
Java
JetBrains Junie
Julia
Microsoft Foundry
Python
SQL
Scala
Visual Basic
Visual Studio Code
Windsurf Editor

Integrations Supported

Codex CLI
Elixir
F#
GPT-5.2
GPT-5.2 Instant
GPT-5.2 Thinking
GPT-5.4 Pro
GPT-5.5
GPT-5.5 Pro
HTML
Java
JetBrains Junie
Julia
Microsoft Foundry
Python
SQL
Scala
Visual Basic
Visual Studio Code
Windsurf Editor

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Pricing Information

Free 200 candidates per month
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

openai.com/index/gpt-5-1-codex-max/

Company Facts

Organization Name

SmallDay IT Services

Date Founded

2015

Company Location

India

Company Website

codexpro.ai/

Categories and Features

Pre-employment Testing

Aptitude Testing
Candidate Comparison
Candidate Management
Customizable Tests
Online Testing
Personality Testing
Pre-made Test Library
Real Time Reporting
Skill Testing
Test Authoring
Workflow Management

Technical Screening

Candidate Comparison
Candidate Management
Challenges
Coding Skills Lessons
Customizable Testing
Gamification
Multiple Coding Language Options
Reporting
Test Authoring
Workflow Management

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