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Arcwright

Desktop editor and browser. One account.

Read the diff.
Then keep it.

Arcwright works in the folder you already have. It asks before it writes, shows the change, and lets you rewind the step. Free to start. Windows desktop, plus the builder and assistant in the browser.

Download for Windows v1.0.129 Start in the browser

Free plan: 30 minutes of Arcwright AI a day, no card. macOS and Linux builds are not ready yet.

Asks before a write · Diff before it lands · Rewind any step · Meter stays on

  • Four modesAsk, Forge, Blueprint, Sketch
  • WindowsDesktop build v1.0.129
  • Free start30 min a day, no card
  • VideoAdd-on from $19/mo
Watch the editor move

The window

Files on the left. The edit in the middle. Status on the right.

This frame is the Arcwright editor in motion: a file lights up, a line is typed, a diff appears, and the status moves. Nothing on this page is sent.

Arcwright · your folder Reading index.html
  • index.html
  • styles.css
  • app.js
  1. <header class="top">
  2. <a href="/">Arcwright</a>
  3. </header>

Illustrative motion of the editor. A still of the real app is further down the page.

Same account

Pick a surface. The plan follows you.

First session

Open it. Ask for the change. Read what it did.

  1. 01

    Open a folder

    Download the Windows app, or sign in and use the builder in the browser. The account is the same either way.

  2. 02

    Say what should change

    Forge reads the files it needs. A write, a delete, or a command waits until you allow it.

  3. 03

    Keep or rewind

    The diff sits next to the code. Keep it, undo it, or roll the whole step back. The rewind is a checkpoint too.

Why Arcwright

You stay in charge of your code.

Most AI editors optimise for speed. Arcwright optimises for trust: the assistant lives in the same window as your files, and nothing lands without you seeing it first.

It asks before it edits

Forge’s permission check runs in the app, not in the model. The default is to ask before a write, a delete or a terminal command. Ctrl Alt Shift H stops a run at once.

Forge asking permission to run a tool: the prompt says what it needs and offers Deny, Always allow or Allow once

Every change is a diff

Edits land as a diff you can read. Sketch is one undoable change. Blueprint applies a set of file changes in one step, and Undo all puts them back.

A timeline you can rewind

Each AI change is a checkpoint with the prompt that caused it. Restore the project or one file. A rewind is itself a checkpoint, so you can undo that too.

A cost meter that is always on

Tokens and credits update as you work. Set a monthly budget: a warning at 80%, and a stop at the cap.

The Forge chat showing the files it changed, with Keep all, Undo all and Commit buttons beside a green and red diff

Review, keep or undo, then commit

When Forge finishes, you get a summary of what changed with Keep all, Undo all and Commit. The diff opens beside your code so you can read it line by line.

Four ways to work

One chat. Four ways it works.

Ask

Talk about the code. The open file and your selection go with the question, so you are not pasting chunks into a chat box.

Forge

Say you want it built. Forge reads, searches, edits and runs commands in the folder. Each step is checked and written to an activity log.

Blueprint

Ask for a plan across several files, then apply the ones you accept as a single undoable step.

Sketch Ctrl+J

Describe a small edit on the selection, or a bit of UI. You get a diff, then Accept or Reject.

How those four work · Watch a shared replay

Models and providers

Real models, by their real names. You pick.

Pick a model from the model picker in the app or the browser. Each one is listed by its own name with its maker's logo, so you always know exactly what you are using.

Provider 1

Arcwright AI

Our hosted default. Included in every plan, metered on the server, and tuned for coding with tools.

  • Grok 4.7

    xAI · Harder problems and planning. The default.

  • Grok 4.6

    xAI · Multi-step Forge work.

  • Grok 4.5

    xAI · Quick chat and everyday coding.

  • Claude Sonnet

    Anthropic · Harder refactors and long reasoning.

AI video

One sentence. A short clip. Seconds, not a mystery meter.

The studio is separate from the coding plans. You describe the shot, choose wide or tall, and each second spends one credit. A failed render puts the credit back.

From $19 a month.

Open the video studio

Clone and rebuild

Point it at a website. Get a working copy to make your own.

Clone a page

Give Forge a public address. It saves the page and its images into your folder and opens the copy in the preview, ready to edit.

Check it against the original

Forge screenshots its copy, compares it with the page, lists the differences in spacing, colour and layout, and fixes them.

Make it yours

Swap in your name, words, colours and pictures. Every change shows as a diff first, and you can undo any step.

Or start from a picture

Attach a screenshot of a design you like and ask for a site in that style. Build it for your own brand, not someone else's.

How to clone a website with AI · Make your own version · Clone a landing page

Pricing

Start free. Upgrade when it earns it.

Prices are in US dollars. The Free plan resets every day, and paid plans add AI time, better models and team features.

Free

Try it every day, no card.

$0 forever

  • 30 minutes of AI a day
  • Included usage, included models
  • 2 devices
Start free

Starter

For side projects.

$11 / month

  • No daily AI clock
  • 5× more usage than Free, included models
  • 2 devices
See details
Most popular

Pro

For daily work.

$24 / month

  • No daily AI clock
  • 4× more usage than Starter, included models
  • 3 devices
  • Time travel
See details

Max

For heavy use.

$75 / month

  • No daily AI clock
  • 4× more usage than Pro, all models
  • 5 devices
  • Time travel
  • Priority queue
See details

Team

For groups.

$38 / seat / month

  • No daily AI clock
  • Same usage as Pro, shared by the team, all models
  • 10 devices
  • Time travel
  • Priority queue
  • Audit log
See details

Full pricing and billing details · Arcwright Video is a separate add-on from $19 a month

FAQ

Frequently asked questions

What is Arcwright?
Arcwright is a desktop AI coding editor for Windows. One chat asks, plans and builds (Forge). Sketch (Ctrl+J) does a small inline edit. Every change is a diff you can read before you accept it.
Is Arcwright free?
The app is free to download. The Free plan includes 30 minutes of Arcwright AI a day with no card, and the clock runs only while a request is working. Paid plans are on the pricing page.
Does Arcwright work on macOS or Linux?
Not yet. Only the Windows build is ready. macOS and Linux builds are not ready, and we do not give dates until they are.
Is Arcwright a Cursor alternative?
It is another AI coding editor, so it can be an alternative if you are on Windows and want the AI to ask before it writes, deletes or runs commands. It is a younger product, so compare it on a small real task before you switch.
Will the AI change my files without asking?
By default, no. Forge asks before a write, a delete or a terminal command, and the check runs in the app rather than in the model. You can turn the prompts off, and Ctrl+Alt+Shift+H stops a run at once.
Can I undo what the AI did?
Yes. Each AI change is a checkpoint with the prompt that caused it. You can restore the project or a single file, and a rewind is itself a checkpoint. Blueprint also has Undo all.
What is vibe coding?
Vibe coding means describing software in plain language and letting an AI write most of the code. It works best for prototypes and personal tools, and it is safer when you read the diffs and keep version control on.
What leaves my computer?
Your files stay on your computer. When you ask Arcwright AI something, the parts you send, such as the open file, your question and anything Forge reads for you, go to our server over HTTPS so the request can be answered and metered. See the privacy policy for details.

Learn

An AI coding editor, a Cursor alternative, and a safer way to vibe code

An AI coding editor that shows its work

The assistant lives in the same window as your files, so it sees the file you have open and the lines you selected. When it wants to change your project, it shows the change as a diff first. When it wants to write a file, delete one or run a terminal command, it stops and asks.

A Cursor alternative for Windows

The useful questions are practical ones: can you read every change, undo it in one step, and see what it costs while you work? Arcwright is built around those answers. Our guide to Cursor alternatives explains what to compare and when another tool is the better pick.

A Claude Code alternative in a window

Terminal agents are excellent for scripting and long tasks. If you would rather approve actions with a button and read a visual diff, a desktop editor is the other way to work. See Claude Code and AI editors.

Same account in the app and the browser.

Sign in once. The desktop app and the website share the plan. No key to paste into a settings file.

Create a free account Download page