Last updated 10-23-2025
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Codex
OpenAI Codex is an AI system that translates natural language into code, now generally available with new features for developers and teams. It powers GitHub Copilot and supports over a dozen programming languages including Python, JavaScript, Go, and more. Codex can interpret simple English commands and execute them, enabling natural language interfaces to software and APIs.
The latest version, GPT-5-Codex, offers faster and more accurate coding assistance, accessible via an API and a new SDK that integrates the Codex agent into custom workflows and apps. Codex also features a Slack integration, allowing teams to delegate coding tasks and get answers directly within Slack channels.
Administrators benefit from enhanced tools like environment controls, usage monitoring, and analytics dashboards to manage Codex usage at scale. Codex is used globally by startups and enterprises alike to speed up code reviews, automate code cleanup, and reduce manual coding effort.
Technically, Codex has a larger memory for Python code (14KB) than its predecessor GPT-3, allowing it to consider more context when generating code. It runs as a cloud-based agent and also offers a local CLI tool for coding assistance in terminal environments.
OpenAI continues to improve Codex’s safety and reliability, scaling access carefully while supporting developers with documentation and community resources. Codex lowers barriers to programming by automating repetitive tasks and helping users map problems to existing code efficiently.
🧑💻 Multi-language support: Works with Python, JavaScript, Go, and more to assist diverse coding needs.
⚙️ Codex SDK: Embed Codex’s coding agent into your own apps and workflows for custom automation.
💬 Slack integration: Assign coding tasks and get answers directly within Slack channels.
📊 Admin tools: Manage usage with environment controls and analytics dashboards for teams.
🚀 Code review automation: Speeds up pull request reviews and detects issues early to improve code quality.
Supports many popular programming languages for versatile coding assistance.
Offers SDK and CLI tools for flexible integration into workflows.
Includes Slack integration for team collaboration and task delegation.
Provides admin controls and analytics for managing usage at scale.
Speeds up code reviews and automates repetitive coding tasks.
Original Codex model deprecated in 2023; users should migrate to GPT-5-Codex.
Windows support for CLI is unofficial and may require workarounds.
Advanced features require paid plans, limiting free tier capabilities.
What programming languages does Codex support?
Codex supports over a dozen languages including Python, JavaScript, Go, Perl, PHP, Ruby, Swift, TypeScript, and Shell scripting.
How can I integrate Codex into my development workflow?
You can use the Codex API, the new Codex SDK for embedding the agent into your apps, or the Codex CLI tool for local terminal use.
What is the Codex Slack integration?
It lets you assign coding tasks or ask coding questions directly within Slack channels, with Codex responding and linking to completed tasks.
Are there tools for managing Codex usage in teams?
Yes, Codex offers admin features like environment controls, usage monitoring, and analytics dashboards for workspace administrators.
Can Codex help automate code reviews?
Yes, companies like Cisco use Codex to speed up code reviews by automatically checking pull requests and catching issues early.
Is Codex suitable for non-coders?
Codex lowers the barrier to programming by allowing users to interact with software through natural language commands, making coding more accessible.
What models does Codex use?
The latest Codex uses GPT-5-Codex, optimized for coding tasks with improved speed and accuracy over previous versions.