Reason

Reason

Reason Machines
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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

Reason is an autonomous software engineer and AI coding agent designed to take ownership of real engineering work, from researching codebases and fixing bugs to implementing features and verifying results. It works across connected repositories, local computers, and cloud environments, allowing developers to delegate tasks without interrupting their workflows. The agent can explore codebases, trace call paths, reproduce failures, edit files, run tests, and produce verified pull requests for human review. Its research capabilities provide evidence-backed findings with citations linking directly to source files and lines, while repository memory preserves knowledge for future sessions. Reason supports parallel subagents, isolated workspaces, scheduled sessions, and automated workflows for development and operations. Teams can connect repositories, manage permissions, inspect code changes, and review builds, regression tests, and deployment checks before merging.

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 Not Supported
Mac Supported
Linux Not Supported
Cloud 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, engineering teams, and DevOps searching for a tool to automate coding tasks, investigate codebases, resolve issues, and streamline software development

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

No information available.
Free Version Not 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:

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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

Reason Machines
Founded: 2026
United States
reasonmachines.com

Alternatives

Alternatives

Perplexity Computer

Perplexity Computer

Perplexity AI
Augment Code

Augment Code

Harness
Bolt.new

Bolt.new

StackBlitz
Codex CLI

Codex CLI

OpenAI
AtomCode

AtomCode

AtomGit
Claude Code

Claude Code

Anthropic

Categories

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

Categories

AI Agents Supported
AI Coding Agents Supported

Integrations

Slack Supported
Agent Bayes Supported
Burp Suite Supported
Conductor Supported
Dazzle Supported
DeployStack Supported
Earthly Lunar Supported
GPT-5.2 Supported
IndieCRM Supported
Maestri Supported
MemPalace Supported
Muse Spark Supported
Pushary Supported
Session Orchestrator Supported
Skydive Supported
Solar Decide Supported
SyncStaff Supported
Tokenrip Supported
TypeScript Supported
Upvote.Net Supported

Integrations

Slack Supported
Agent Bayes Not Supported
Burp Suite Not Supported
Conductor Not Supported
Dazzle Not Supported
DeployStack Not Supported
Earthly Lunar Not Supported
GPT-5.2 Not Supported
IndieCRM Not Supported
Maestri Not Supported
MemPalace Not Supported
Muse Spark Not Supported
Pushary Not Supported
Session Orchestrator Not Supported
Skydive Not Supported
Solar Decide Not Supported
SyncStaff Not Supported
Tokenrip Not Supported
TypeScript Not Supported
Upvote.Net Not Supported
Claim OpenAI Codex and update features and information
Claim OpenAI Codex and update features and information
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