root@scaleyourweb:~$ ./codex --mode=ship

 ██████╗ ██████╗ ██████╗ ███████╗██╗  ██╗
██╔════╝██╔═══██╗██╔══██╗██╔════╝╚██╗██╔╝
██║     ██║   ██║██║  ██║█████╗   ╚███╔╝
██║     ██║   ██║██║  ██║██╔══╝   ██╔██╗
╚██████╗╚██████╔╝██████╔╝███████╗██╔╝ ██╗
 ╚═════╝ ╚═════╝ ╚═════╝ ╚══════╝╚═╝  ╚═╝

ChatGPT Can Explain Things. Codex Can Change Things.

Codex turns instructions into working edits across your codebase. It reads context, changes files, runs checks, fixes failures, and leaves you with reviewable work instead of another answer to translate by hand.

▶ GET THE PLAYBOOK [ SEE COMPARISON ]

4xFASTER_ITERATION

0COPY_PASTE_LOOPS

100%REVIEWABLE_DIFFS

Codex terminal showing code changes and tests passing

CODEBASE_CONTEXT◆FILE_EDITS◆TEST_RUNS◆BUG_FIXES◆FRONTEND_POLISH◆DEPLOYMENT_PREP◆ CODEBASE_CONTEXT◆FILE_EDITS◆TEST_RUNS◆BUG_FIXES◆FRONTEND_POLISH◆DEPLOYMENT_PREP◆

// SECTION_01

$ cat why_codex.txt

WHY_CODEX_WORKS

[CONTEXT]01

Understands the repo

→ Reads real files, not isolated snippets
→ Follows existing patterns and conventions
→ Keeps changes scoped to the request

[ACTION]02

Changes the product

→ Edits code, copy, assets, configs, and tests
→ Handles multi-file implementation work
→ Turns vague intent into shipped UI

[VERIFY]03

Checks its work

→ Runs local tests and build commands
→ Inspects browser output and screenshots
→ Reports what passed and what needs attention

// SECTION_02

$ diff chatgpt codex

EXPLAINING_VS_CHANGING

CHATGPT

Great for ideas, explanations, strategy, and learning.

Answers questions

Suggests code

Needs manual copy and testing

Stops before your repo changes

CODEX

Built for execution inside your actual workspace.

Reads the project

Edits the files

Runs checks and fixes issues

Leaves a reviewable finished change

// SECTION_03

$ node measure-impact.js

WHERE_CODEX_SAVES_TIME

The biggest gains happen in the handoff between thinking and doing: finding the right files, making repetitive edits, verifying the result, and turning feedback into follow-up patches.

Repo exploration72%

Implementation loops84%

Test feedback63%

UI polish passes78%

Codex workflow from request to verified change

// SECTION_04

$ ./ship-with-codex.sh

FROM_PROMPT_TO_PULL_REQUEST

01
Describe the outcome: feature, fix, page, workflow, or cleanup.
02
Codex inspects the project and makes the required file changes.
03
It verifies the result with builds, checks, browser review, or targeted tests.
04
You get a concise summary and a clean path to ship.