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Side-by-side comparison · Coding & Dev Tools

Claude Code vs OpenAI Codex

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

Best overall

Claude Code

4.4

From $20/mo

OpenAI Codex

4.2

From $8/mo

Comparing 2 tools. Add one more if you like.

At a glance

Best overall

Pick it if: Anyone building software, from first-timers to senior engineers, who wants an AI that does the work itself.

Best value

Pick it if: ChatGPT subscribers who want a coding agent without paying for a second subscription.

Claude Code scores highest overall, but OpenAI Codex gives you more for your money. Which one is right comes down to what you value most.

Overview

AttributeClaude CodeOpenAI Codex
In one lineAn AI agent that works inside your project: it reads, writes and runs the code for you.OpenAI's coding agent. Hand it a task and it works away while you do other things.
Pricing modelPaidFreemium
Starting price$20/mo$8/mo
Free plan No Yes
Works with Claude Code Yes No

Rating breakdown

Our scores out of 5. The higher bar in each row is highlighted.

AttributeClaude CodeOpenAI Codex
Overall rating4.4Winner4.2
Ease of useHow quickly someone non-technical gets value from it.
3.5
3.5
FeaturesHow completely it covers the job it's built for, and how well the pieces fit together.
5.0
4.5
Output qualityHow good the results are before you fix them.
5.0
4.5
Value for moneyWhat you get for the price, including the free plan.
4.0
4.5
Speed & reliabilityHow fast it is and how often it falls over.
4.5
4.0

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeClaude CodeOpenAI Codex
Access & platform
Free plan No Yes
Mobile app Yes Yes
Desktop app Yes Yes
Browser extension No No
API access Yes Yes
Teams & business
Team workspace Yes Yes
Enterprise plan or SSO Yes Yes
Connects to other apps Yes Yes
Open source or self-hosted No Yes
AI abilities
Works with your files Yes Yes
Understands images Yes Yes
Makes images No No
Makes video No No
Writes code Yes Yes
Runs agents or automations Yes Yes
Learns your brand or style Yes Yes
Works in many languages Yes Yes
Capabilities score12/ 1714/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeClaude CodeOpenAI Codex
Plans

ProOur pick

$20/mo, or $17/mo billed yearly

Trying Claude Code and light daily use.

Free

Free

A quick look at what it can do.

Team

From $20/seat/mo billed yearly

Businesses with 2 to 150 people who want central billing.

Go

$8/mo

Occasional light tasks.

Enterprise

$20/seat/mo billed yearly, 20-seat minimum

Larger companies with compliance needs.

PlusOur pick

$20/mo

Anyone who already pays for ChatGPT.

Max

From $100/mo

Anyone running Claude Code for hours a day.

Pro

From $100/mo

Developers who hit the Plus limits.

API (pay as you go)

Usage based

Teams who want to pay only for what they use.

Business

$20/user/mo billed yearly, or $25 monthly

Teams of 2 or more.

Enterprise

Custom

Large organisations.

Which plan to pickStart on Pro. It is enough to build a small site or tool in evenings and weekends. If you hit the limit most days, Max 5x is the next step; it costs five times as much but usually works out cheaper than paying for the API directly.If you already have ChatGPT Plus, you have Codex: just try it. If you are choosing between this and Claude Code with no existing subscription, Plus at $20 and Claude Pro at $20 cost the same, so pick whichever chat assistant you prefer.

Key features

AttributeClaude CodeOpenAI Codex
Standout features
  • Works in your project
  • Plain-English tasks
  • Runs where you work
  • CLAUDE.md and Skills
  • MCP connections
  • Subagents and background work
  • Cloud tasks
  • Desktop app and CLI
  • Start from your phone
  • Automatic code review
  • AGENTS.md
  • Open source CLI

Pros and cons

AttributeClaude CodeOpenAI Codex
Pros
  • Finishes real tasks end to end, not just suggestions you have to apply
  • Best-in-class at understanding a whole codebase before it changes anything
  • Runs in the terminal, desktop app, web, phone and the main editors
  • CLAUDE.md, Skills and MCPs make it fit your way of working
  • One Claude subscription covers both chat and coding
  • Included with every ChatGPT plan, so many people already have it
  • Cloud tasks let you start work from anywhere and come back later
  • Strong on tough, multi-file coding jobs
  • The CLI is open source and works with an API key
Cons
  • No free tier, and the Pro usage cap can run out in an afternoon of heavy work
  • The terminal is intimidating for non-developers at first
  • It will happily change things you did not ask about unless you set boundaries
  • Costs on Max or the API add up fast for teams
  • Five-hour and weekly limits bite on Plus if you use it seriously
  • Cloud tasks use more of your allowance than local ones
  • It asks fewer questions than Claude Code before changing things
  • Model names and limits change often, which makes it hard to plan costs

Who each one is for

AttributeClaude CodeOpenAI Codex
Best for
  • Building features end to end
  • Fixing bugs you can't find
  • Explaining a codebase you don't know
  • Automating repetitive dev tasks
  • Background tasks in the cloud
  • Starting a task from your phone
  • Developers already on ChatGPT Plus
  • Coding in the terminal
You'll find it used by
  • Developers
  • Solo founders
  • Agencies
  • Technical marketers
  • ChatGPT subscribers
  • Developers
  • Startup teams
  • Solo founders

Questions people ask

Which is better, Claude Code or OpenAI Codex?

Claude Code scores highest overall in our ratings (Claude Code 4.4/5 and OpenAI Codex 4.2/5). Claude Code is best for building features end to end and fixing bugs you can't find. OpenAI Codex is best for background tasks in the cloud and starting a task from your phone.

Which is cheaper, Claude Code or OpenAI Codex?

Claude Code: There's no free plan. Paid plans start at $20/mo. OpenAI Codex: There's a free plan, and paid plans start at $8/mo.

How we compare

Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.

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