Ease of use
8.8
Onboarding, navigation, and day-to-day workflow friction.
AI Coding Assistants
Codex
OpenAI's cross-surface coding agent for local and cloud software work.
Codex: OpenAI's cross-surface coding agent for local and cloud software work.. Pricing: From $8/mo + usage. Best for Developers who want one OpenAI agent across ChatGPT, CLI, IDE, and desktop and Teams running long-lived background tasks and parallel code reviews.
Tool score: 8.5 / 10
From $8/mo + usage
Free plan available
API available
Overview
Bottom line
OpenAI's cross-surface coding agent for local and cloud software work.
Codex is OpenAI's agentic coding assistant for planning, editing, testing, and reviewing software across local and cloud environments. It runs in ChatGPT on the web and iOS, in the Codex app for macOS and Windows, in the CLI, and through IDE extensions.
What makes Codex different is consistency across surfaces. The same product supports background cloud tasks, Git-aware reviews, built-in worktree flows, automations, MCP integrations, skills, and integrations like GitHub, Slack, and Linear. For API-key workflows, you can also use Codex from the CLI, SDK, and IDE extension with usage-based billing instead of ChatGPT-plan limits.
Codex is strongest for developers who want an OpenAI-native agent that can take longer tasks, work in parallel, and move cleanly between chat, terminal, editor, and Git workflows. It is less ideal for buyers who want the simplest flat seat pricing or a single editor-only experience.
Tool scorecard
How the tool scores
A standardized tool profile score across usability, pricing value, feature depth, and support quality.
Tool score
8.5
/ 10Value for money
8.2
How much practical capability the product delivers for the price.
Features
9.2
Breadth, polish, and depth across the core product surface.
Support
7.8
Docs, help channels, and how easily issues get resolved.
Capabilities
Input types
text, image, code, file
Output types
text, code, file
Platforms
web, ios, mac, windows, api
APIMobile app
Company context
Company
OpenAI
Founded
Not specified
Headquarters
Not specified
Category
AI Coding Assistants
Pricing
Pricing snapshot
Free
$0/mo + usage
Usage: Quick coding tasks
Go
$8/mo + usage
Usage: Lightweight coding tasks
Plus
$20/mo + usage
Usage: GPT-5.4: 20-100 local msgs/5h; GPT-5.3-Codex: 30-150 local, 10-60 cloud, 20-50 reviews/5h
Pro $100
$100/mo + usage
Usage: GPT-5.4: 200-1000 local msgs/5h; GPT-5.3-Codex: 300-1500 local, 100-600 cloud, 200-500 reviews/5h
Pro $200
$200/mo + usage
Usage: GPT-5.4: 400-2000 local msgs/5h; GPT-5.3-Codex: 600-3000 local, 200-1200 cloud, 400-1000 reviews/5h
Business
Custom quote or bundled pricing
Usage: Pay as you go; standard or usage-based Codex seats; workspace credits available
Enterprise & Edu
Custom quote or bundled pricing
Usage: Contact sales; flexible pricing scales with credits and can remove fixed limits
FAQ
Common questions
Is Codex included with ChatGPT?
Yes. As of April 14, 2026, OpenAI lists Codex inside ChatGPT Free, Go, Plus, Pro, Business, Edu, and Enterprise plans, with different limits and feature access by tier.
Can I use Codex with an API key instead of a ChatGPT plan?
Yes. OpenAI supports API-key sign-in for Codex in the CLI, SDK, and IDE extension. That route is usage-based and does not include cloud features such as GitHub code review or Slack integrations.
Does Codex support internet access and GitHub workflows?
Yes. Codex cloud tasks can be configured for public internet access, and OpenAI documents GitHub integrations for pull requests, reviews, and repository workflows.
Recent updates
Changelog snapshot
feature
March 26, 2026CLI 0.117.0OpenAI made plugins a first-class workflow and expanded multi-agent path-based addressing in the CLI.
feature
March 5, 2026GPT-5.4 became available across the Codex app, CLI, IDE extension, web, and API, becoming the recommended general-purpose model for most Codex tasks.
feature
March 4, 2026The Codex app launched on Windows with a native PowerShell-based workflow and Windows sandbox support.
feature
February 2, 2026OpenAI introduced the Codex macOS app with parallel threads, worktrees, Git tooling, skills, and automations.
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Read profileTool snapshot
Codex
- Pricing model
- Freemium
- Pricing unit
- Hybrid
- Starting price
- From $8/mo + usage
- Best for
- Developers who want one OpenAI agent across ChatGPT, CLI, IDE, and desktop, Teams running long-lived background tasks and parallel code reviews, Organizations standardizing workflows with skills, MCP, and managed configuration
- Category
- AI Coding Assistants
Last verified April 14, 2026
On this page
Navigation
Tool cluster
Related pages
Open related pages for pricing, reviews, and adjacent coverage.
Review: Codex Review: OpenAI's Coding Agent in 2026Codex is one of the strongest agentic coding assistants available if you want the same OpenAI workflow across ChatGPT, CLI, IDE, iOS, and desktop, but its blended plan-plus-credit pricing is still harder to understand than simpler rivals.Pricing: Codex Pricing: Plans, Credits, and LimitsCodex pricing is hybrid: ChatGPT plan access, included five-hour limits, optional ChatGPT or workspace credits, and API-key billing for local automation workflows.Alternatives: Best Codex Alternatives in 2026Cursor, GitHub Copilot, and Windsurf are the clearest Codex alternatives if you want a more editor-first workflow, cheaper seat pricing, or a different balance between agent power and IDE convenience.
Head-to-head
Open direct comparison pages involving this tool.
VSCodex vs Claude CodeTie overall: Claude Code wins on local control and provider flexibility, while Codex wins on price, cloud delegation, and GitHub review automation.VSCodex vs CursorCursor wins overall for most developers because its editor-first UX, clearer pricing, and broader model choice make it easier to adopt as a daily driver. Codex is stronger when you want a dedicated multi-agent control plane with deeper OpenAI-native automation.
Additional pages and references connected to this tool.
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Reference links