OpenAI Codex vs Cursor in 2026

Codex added a desktop app, IDE extension and cloud tasks on every ChatGPT plan with the GPT-6 family, while Cursor was bought by SpaceX in August 2026 and now includes Grok models but bills GPT and Claude separately.

Updated Oct 26, 2026 · 6 sources checked

The short answer

Codex is a coding agent that comes with your ChatGPT plan; Cursor is an editor whose included models are now Grok.

Pick OpenAI Codex for developers who already pay for ChatGPT and want a coding agent across CLI, IDE, desktop and cloud

Pick Cursor for developers who want an AI-first editor with fast tab completion and are happy to use Grok models, or to pay extra for Claude and GPT

At a glance

	OpenAI Codex	Cursor
Made by	OpenAI	SpaceX (acquired Cursor's maker Anysphere in August 2026)
Starts at	$8/moFree plan	$8/moFree plan
All plans	Included in ChatGPT Free ($0) and Go ($8/mo) for light use, Plus ($20/mo), Pro (from $100/mo, with $100, $200 and $500 tiers) and Business ($25/user/mo, or $20 billed annually). Enterprise and Edu via sales. Also usable with an API key.	Free; Plus $8/mo (Grok models only); Premium $30/mo; Super $100/mo; Ultra $200/mo; Teams from $30/user/mo; Enterprise custom. Claude, GPT and Gemini are not in the included usage: on Premium and above they are billed separately at API list price.
Best for	Developers who already pay for ChatGPT and want a coding agent across CLI, IDE, desktop and cloud	Developers who want an AI-first editor with fast tab completion and are happy to use Grok models, or to pay extra for Claude and GPT

How they score

OpenAI CodexCursor

Coding

9.5

Writing

Reasoning

9.5

8.5

Speed

Context Window

8.5

Privacy

Scores out of 10: our judgment from hands-on use and each vendor's published limits.

OpenAI Codex

by OpenAI

OpenAI's coding agent. It runs as an open-source CLI (Apache-2.0), an IDE extension for VS Code, Cursor and Windsurf, a desktop app, Codex cloud on the web, the iOS app and an SDK. It uses OpenAI's GPT-6 family, with GPT-6.1 Sol recommended for complex coding.

Good

Available on every ChatGPT plan, including Free and the $8 Go plan
CLI is open source under Apache-2.0
Runs locally (CLI, IDE extension, desktop app) or as cloud tasks on the web and iOS
Plus includes automatic GitHub code review and a Slack integration
Pro plans currently have no five-hour usage limit

Watch out

Only runs OpenAI models
Usage on Plus is capped per five-hour window and varies a lot by model (for example 15-160 local messages on GPT-6.1 Sol)
Free and Go plans are limited to GPT-6 Luna
OpenAI does not publish a context window figure for the Codex models on its pricing or models pages

Visit OpenAI Codex ↗

Cursor

by SpaceX (acquired Cursor's maker Anysphere in August 2026)

AI code editor built on VS Code, with tab completion, an agent, cloud agents and AI code review (Bugbot). Since SpaceX bought it in August 2026, its plans are bundled with Grok and X features, and its included models are xAI's Grok and Cursor's own Composer models.

Good

Full VS Code-style editor with strong tab completion and inline edits
Included usage covers Grok 4.7 (256k context, with a 500k long-context option) and Cursor's Composer 2.5
Premium and above add cloud agents, automations, code hosting and Bugbot code review
Can still use Claude, GPT, Gemini and other third-party models at API list price
Runs VS Code extensions, including the Claude Code and Codex extensions

Watch out

The $8 Plus plan only runs Grok models
Claude and GPT usage is billed on top of the subscription, so costs are harder to predict
Plans now mix in X social-network perks, which can be confusing if you only want the editor
Teams and Enterprise add a $0.25 per million token Cursor rate on eligible third-party model use

Visit Cursor ↗

Our verdict

Codex is a coding agent that comes with your ChatGPT plan; Cursor is an editor whose included models are now Grok. If you want GPT models, Codex is the cheaper way to get them, because Cursor bills GPT at API list price on top of its plan. If you want the best in-editor tab completion, Cursor is stronger, and you can install the Codex extension inside Cursor to use both.

Questions people ask

Can I use Codex inside Cursor?

Yes. OpenAI's Codex IDE extension installs in VS Code, Cursor and Windsurf, and the Codex CLI runs in Cursor's terminal.

Can I use GPT models in Cursor?

Yes, on Premium ($30/mo) and above, billed at OpenAI's API list price on top of the subscription. GPT is not part of Cursor's included usage and is not available on Plus.

Which is cheaper, Codex or Cursor?

For GPT-based coding, Codex: it is included in ChatGPT Plus at $20/mo and even in Free and Go for light use. Cursor Premium costs $30/mo before any GPT usage.

Does Codex have tab autocomplete like Cursor?

OpenAI's Codex pricing page does not list classic tab autocomplete; Codex is designed to take on tasks rather than complete lines as you type. Cursor's tab completion is one of its main strengths.

Sources (6), checked Oct 26, 2026