How long is Codex from Zero?

9.5 hours of recorded sessions across 7 modules, taken at your own pace. 6 of the modules end in work Nova grades.

Is Codex from Zero live or self-paced?

Self-paced. The sessions are recorded by an instructor who does this work, and Nova, Square 1's AI tutor, grades every checkpoint and project against a rubric you can read.

How much does Codex from Zero cost?

A$45 for the founding intake, paid once; the standard price is A$90. It is the same price in every country. Founding students keep their founding price on any second programme.

What will I build in Codex from Zero?

3 deployed projects: A reviewed feature, Ten issues and A release. Each is graded against a published rubric and kept on a record an employer can open at /verify.

What skills does Codex from Zero teach?

Codex, code review, testing and release engineering. It prepares you for roles such as Software engineer (AI-assisted) and Maintainer.

Does Codex from Zero guarantee a job?

No. No placement rate is published because there are no graduates to count yet. What you leave with is graded, deployed work on one record an employer can open and run, and a hiring plan you keep with the career agent.

On demandRecorded by an instructor, graded by Nova

Codex from Zero

Name: Codex from Zero
Price: 45.00 AUD
Availability: PreOrder

From first task to a merged release with Codex as the pair.

Codex from Zero is a self-paced online course: 9.5 hours of recorded sessions across 7 modules, with 6 graded by Nova, Square 1's AI tutor. The founding price is A$45, down from A$90. Start any time and keep your own pace.

Taught with

ChatGPTGitHubTypeScriptPython

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Module by module

Module 1Setup, sandboxes and approvals60 min · graded
Module 2Specs an agent can execute90 min · graded
Module 3Reproduce, then fix90 min · graded
Module 4Delegating in the cloud60 min · graded
Module 5Reviewing many diffs a day60 min
Module 6Security and quality passes90 min · graded
Module 7Project: a release end to end120 min · graded

recorded hours: 9.5
modules, in order: 7
deployed projects: 3
graded checkpoints: 6

Who it is for, and what you receive.

Software engineers in any language who want Codex as the pair from first task to a merged release.

Before you start

You write software in any language.

Skills

Codexcode reviewtestingrelease engineering

1
The recorded sessions
Taught by an instructor, taken in order at your own pace, yours for twelve months.
2
Graded work after every module
Exercises and projects marked by Nova against a rubric you can read, with what you did well and what to fix.
3
The projects
Deployed and graded, each one on your record with its repository.
4
Your hiring plan
The same six-part plan the bootcamps use, run with the career agent.
5
The record and the certificate
Every grade at square1ai.com/u/{handle}; a credential ID that resolves at square1ai.com/verify.
6
Nova as your tutor
Help that is about your actual work, because it has read all of it.

The content plan, module by module.

9.5 recorded hours from an instructor, taken in order at your own pace. Nova grades the work at the end of each module.

Installing
Sandbox modes
Approval policies
A first task

The projects.

Each is deployed and graded by Nova against a rubric you can read before you start.

Project 1
A reviewed feature
Write a spec with acceptance criteria for a feature in your own repository, hand it to Codex in a sandbox, and check the diff against every criterion. Where the agent drifted from the spec, your review notes say so.
You hand in
- Spec with acceptance criteria
- Merged feature
- Review notes against the spec
The rubric requires
Spec, diff and review notes agree on every acceptance criterion.
Project 2
Ten issues
Pick ten open issues on an active open-source repository. For each, triage with Codex, write a failing test that reproduces it, then fix and verify. Issues that will not reproduce are swapped, not forced.
You hand in
- Ten fixes as pull requests
- A failing test per issue
- Triage notes per issue
The rubric requires
Every fix has a test that failed before it and passes after it.
Project 3
A release
Take a small service you maintain, or the backend of a fictional ten-person booking business, from spec to production. You delegate parallel cloud tasks, run a security pass with verified fixes, review every diff and write release notes.
You hand in
- Deployed release
- Release notes
- Hardening findings and fixes
- Verification run output
The rubric requires
The release ships with its notes and a green test suite.

What you can do at the end.

A Codex workflow for building and maintaining software, ten public fixes, and three graded projects on your record.

1
Set up Codex with sandboxes and approvals and ship a first reviewed change.
2
Write specs an agent can execute and check the diff against them.
3
Reproduce bugs with a failing test before letting the agent fix them.
4
Delegate tasks to the cloud and merge them without regressions.
5
Review many diffs a day with a checklist that catches what matters.
6
Run security and quality passes and verify every fix.

Roles this prepares you for

Software engineer (AI-assisted)Maintainer

No placement rate is shown, because there are no graduates to count yet. The roles above are what the projects are built for.

Your record at the end.

Every exercise and project is graded by Nova against a rubric you can read, and every grade is kept on one page an employer can open and run. This is what the programme writes to it.

Graded, line by line: Nova reads every submission against the brief and the rubric and returns a score, what you did well and what to fix.
Module by module: Each module ends in graded work; the next opens when you are ready, on your own schedule.
Nova remembers: Help is about your actual work, because the tutor has every submission and every failed exercise of yours.
One page an employer can run: Every grade and project at /verify. An employer opens it and runs the code.

Record, Codex from ZeroExample

Project
A reviewed feature
Spec, diff and review notes agree on every acceptance criterion.
Graded
Project
Ten issues
Every fix has a test that failed before it and passes after it.
Graded
Project
A release
The release ships with its notes and a green test suite.
Graded
Every module
6 graded checkpoints
Each module ends in work Nova grades line by line against a rubric you can read.
Graded

The entries, not the grades: those are yours to earn. The page lives at /verify and an employer needs no account to open it.

5 entries, at your own pace. Reserving a spot holds the founding price.

Pre-order

How we help you find a job.

Proof, not a certificate: the projects you deployed are the thing you show, and the tools below are yours to use.

The course booklet

The whole plan on a few pages: the parts, the projects, the gates and the price. We email it to you.

Get the booklet

1
Your hiring plan
The same six-part plan the bootcamps use: target roles, the gap map, the proof to send, weekly actions, an interview log, the outcome. You run it with the career agent.
2
A record an employer can run
Your graded projects on /verify. An employer opens it and runs the code.
3
The career agent
Paste a real job posting at /career and it maps the role to your graded work and what to do next.
4
The roles directory
Every role we prepare people for, what it pays and what it asks, at /roles.
5
A path to the live cohort
If you want the instructor, the gates and the hiring sprint, the bootcamp on the same subject is one waitlist away.

Questions people ask.

About Codex from Zero, answered from the plan on this page.

Founding spots are open. Hold yours.

Recorded by an instructor who does this work, graded by Nova. Spot holders hear the opening date first, and nothing is charged before you confirm.

A Codex workflow for building and maintaining software
Three graded projects on your record

A$45~~A$90~~