Cursor vs OpenAI Codex
Pricing
Cursor: Free tier, Pro from $20/mo (usage-based)
OpenAI Codex: Included in ChatGPT plans (Plus $20/mo, Pro from $100/mo), limited use on Free and Go
Description
Cursor: AI code editor (VS Code fork) that lets you talk to your codebase, autocomplete across files, and refactor with a prompt
OpenAI Codex: OpenAI's coding agent, which works in the ChatGPT desktop app, your terminal, your editor and the cloud on your ChatGPT plan
Pros
- Feels like VS Code: your extensions and shortcuts just work
- Tab completions predict multi-line changes, not just single words
- Can reference your entire codebase when answering questions
- Runs in the ChatGPT desktop app, the CLI, an IDE extension and on the web, all tied to one ChatGPT account
- Cloud tasks keep going after you close your laptop, in a reusable environment for each repo
- Reviews GitHub pull requests when you tag @Codex or turn on automatic reviews
Cons
- Free tier runs out fast: expect to hit the Pro paywall within a week of real use
- Sometimes confidently suggests wrong code, especially for less popular libraries
- Each plan includes a set amount of model usage, and extra usage is billed afterwards, so costs are harder to predict
- Free and Go plans only get limited use in the desktop app, on the smaller GPT-6 Luna model
- Plus usage is counted per five-hour window and weekly limits can also apply, and how far it goes depends on the model and the size of the task
- Running it on an API key instead of a plan drops the cloud features, such as GitHub code review and Slack
Details
If you already use VS Code, Cursor is the shortest path to having AI actually understand your project. It does more than autocomplete: you can highlight code and ask “why is this breaking?” or tell it “add error handling to all API routes” and watch it edit multiple files.
The tab completions are the killer feature. They predict what you are about to type based on what you just did, and they are eerily good at continuing patterns. The free Hobby tier gives you a taste, but its Agent requests are limited and run out quickly. Pro at $20/month is where most solo devs land, with Pro+ and Ultra above it for heavy agent use. Every plan includes a set amount of model usage, and anything beyond it is billed afterwards, so keep an eye on your usage if you are doing heavy agent work. Anysphere, the company that makes Cursor, became part of SpaceX when SpaceX completed its acquisition on 14 August 2026.
Codex is OpenAI’s coding agent. You hand it a task, such as a hard-to-find bug, a refactor or a new feature, and it reads the code, makes the changes and checks its own work, using browser and computer tools where it needs them. It can run several agents in parallel, and cloud tasks carry on while your laptop is closed.
It comes with ChatGPT, so if you already pay for Plus you already have it. The same account works in the desktop app, the terminal, your editor and on iOS.
OpenAI describes Plus at $20/month as enough for a few focused coding sessions a week. Heavier use means Pro, from $100/month, which currently has no five-hour limit, or buying extra credits when you hit the limit. You can also run the CLI on an API key and pay standard API rates, which suits automation such as CI.
Verified
