Codex is OpenAI's advanced AI agent designed to assist with coding and development tasks. It integrates within ChatGPT to write, debug, explain, and optimize code across multiple programming languages. It helps developers automate repetitive tasks, understand complex codebases, and accelerate software development.
Freemium
from SGD 30/month
How to use Codex?
Codex is used as an agent within ChatGPT. Users can ask it to write code snippets in languages like Python or SQL, debug existing code, explain complex algorithms, or design database schemas. It acts on your documents, tools, and codebases to automate development workflows, troubleshoot issues, and generate scripts for various applications, from data analysis to web development.
Codex 's Core Features
Generates functional code snippets in multiple programming languages based on natural language descriptions.
Debugs existing code by identifying errors, suggesting fixes, and explaining the root cause of issues.
Explains complex code segments and algorithms in simple terms, making it easier for learners and professionals to understand.
Designs and optimizes database schemas and writes efficient SQL queries for data management projects.
Integrates with developer tools and workflows through ChatGPT apps, allowing action across documents and codebases.
Assists with code reviews and refactoring, suggesting improvements for performance, readability, and best practices.
Automates repetitive coding tasks and script generation, saving significant time during the software development lifecycle.
Codex 's Use Cases
Software developers can use Codex to quickly generate boilerplate code, debug complex functions, or learn new programming paradigms, accelerating project delivery.
Data scientists and analysts can leverage Codex to write Python scripts for data cleaning, analysis, and visualization, or to generate SQL queries for database interrogation.
DevOps engineers can utilize Codex to automate infrastructure scripts, troubleshoot deployment issues, and understand configuration code for cloud services.
Students and coding bootcamp participants can ask Codex to explain programming concepts, provide examples, and help with homework or project code, enhancing their learning curve.
Product managers and technical founders can use Codex to create prototypes, understand technical constraints, and communicate more effectively with their engineering teams.
QA engineers and testers can employ Codex to write automated test scripts, analyze bug reports, and generate test data, improving software quality assurance processes.
Codex 's Pricing
Free
SGD 0 / month
Limited access to flagship models, messages, uploads, and image generation. No access to Codex.
Go
SGD 11 / month
More access to GPT-5.2, messages, uploads, and image creation. No access to Codex.
Plus
SGD 30 / month
Includes Codex agent and Sora video generation. Advanced reasoning, expanded features, and early access.
Pro
SGD 300 / month
Expanded, priority-speed Codex agent. Unlimited GPT-5.2, maximum memory, and research previews.
Business
SGD 32 / user / month
Secure workspace with admin controls, apps integration, and access to Codex for reasoning across tools and codebases.
Enterprise
Contact sales
Enterprise-grade security, expanded context, advanced data privacy, 24/7 support, and custom terms.
