OpenAI Codex

OpenAI Codex

OpenAI
5.0 out of 5 stars
+
+

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About

Codex is an AI-powered coding agent from OpenAI designed to help developers build, manage, and ship software more efficiently across the entire development lifecycle. It acts as an intelligent pair programmer that can understand codebases, generate features, and deliver production-ready pull requests. Codex can safely execute commands in sandboxed environments while assisting with debugging, refactoring, and testing. A key advancement is its computer use capability, allowing it to operate your computer by seeing, clicking, and typing across applications. This enables Codex to interact with tools that don’t have APIs, making it useful for tasks like frontend testing and app navigation. The platform also includes an in-app browser and integrations with various developer tools for a more unified workflow. Codex supports automation by handling ongoing tasks such as monitoring, issue triage, and follow-ups.

About

Reasonix is an open source coding agent designed for long autonomous sessions that remain readable, auditable, and reversible. One local engine powers four interfaces: terminal, desktop app, browser, and ACP-compatible editors, with sessions, permissions, skills, and MCP servers shared across them. Plan mode holds every write until the proposed steps are reviewed and approved, while reads, writes, and shell commands are separately gated and constrained by a workspace sandbox. Each turn creates a checkpoint outside Git, allowing users to rewind a long run without affecting commit history. MCP support over stdio, SSE, and streamable HTTP merges external tools into one registry, while Markdown skills and isolated subagents extend the agent without requiring a fork. Reasonix maps a codebase once and keeps that map throughout the session, letting users queue tasks, review diffs, and resume work without losing context.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Codex is ideal for software developers, engineering teams, and tech organizations that want to automate coding tasks, leverage AI-driven workflows, and utilize computer-based automation to accelerate software development

Audience

Software developers and engineering teams wanting a tool to run long, auditable AI coding sessions, automate repository work, and extend agent capabilities across terminal, desktop, browser, and editor workflows

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$20/month
Free Version Supported
Free Trial Supported

Pricing

Free
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • OpenAI Codex feels less like a coding assistant and more like a junior developer that can execute tasks independently. For knowledge workers juggling technical and non technical work, this shift is powerful because it can take a task, work through it, and return with usable results. Its ability to operate across full codebases is a major strength, allowing it to write, debug, test, and manage multiple files in a way that fits real world development workflows. The multi agent and automation capabilities are particularly useful since you can run parallel tasks and orchestrate work efficiently, which significantly improves productivity on complex projects. It is also expanding beyond pure coding with features that allow interaction with software environments, making it feel like a broader work assistant.

Cons

  • Codex can still struggle with very large or highly complex projects without iteration, and outputs often need refinement through multiple passes. The setup and workflow can feel heavier compared to simpler tools, especially when integrating with repositories or managing environments. There is also strong competition, and in some advanced or highly structured coding scenarios other tools may feel more precise.

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

OpenAI
Founded: 2015
United States
openai.com

Company Information

Reasonix
China
reasonix.io

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Categories

Agentic AI Supported
AI Agents Supported
AI Code Generators Supported
AI Coding Agents Supported
AI Tools Supported
Vibe Coding Supported

Categories

AI Coding Agents Supported

Integrations

AgentSky Supported
Agentspan Supported
Backslash Security Supported
Cronloop Supported
DeepSeek-V4-Flash Not Supported
DocSolved Supported
GPT-Image-2.5 Sunburst Supported
Gitoro Supported
HOL Guard Supported
Kotlin Supported
Lamini Supported
Meelu Supported
Pane Supported
Photon Studio Supported
PlatformPilot Supported
Slack Code Supported
SyncStaff Supported
VOYGR Supported
blume Supported
nono Supported

Integrations

AgentSky Not Supported
Agentspan Not Supported
Backslash Security Not Supported
Cronloop Not Supported
DeepSeek-V4-Flash Supported
DocSolved Not Supported
GPT-Image-2.5 Sunburst Not Supported
Gitoro Not Supported
HOL Guard Not Supported
Kotlin Not Supported
Lamini Not Supported
Meelu Not Supported
Pane Not Supported
Photon Studio Not Supported
PlatformPilot Not Supported
Slack Code Not Supported
SyncStaff Not Supported
VOYGR Not Supported
blume Not Supported
nono Not Supported
Claim OpenAI Codex and update features and information
Claim OpenAI Codex and update features and information
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Claim Reasonix and update features and information